diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApis.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApis.java
index 881b5b4c4..7d9c773d4 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApis.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApis.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -34,19 +34,17 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayConnectionOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayConnectionPrefixFilterOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayConnectionTunnelsOptions;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayGreTunnelOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayRouteReportOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListConnectionsOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListGatewayLocationsOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayConnectionPrefixFiltersOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayConnectionsOptions;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayGreTunnelOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayRouteReportsOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewaysOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PrefixFilterCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PrefixFilterCust;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RedundantGRETunnelCollection;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RedundantGRETunnelReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ReplaceTransitGatewayConnectionPrefixFilterOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RouteReport;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RouteReportCollection;
@@ -57,6 +55,8 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionCust;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.UpdateTransitGatewayConnectionOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.UpdateTransitGatewayConnectionPrefixFilterOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.UpdateTransitGatewayConnectionTunnelsOptions;
@@ -218,6 +218,9 @@ public ServiceCall<TransitGateway> createTransitGateway(CreateTransitGatewayOpti
     final JsonObject contentJson = new JsonObject();
     contentJson.addProperty("location", createTransitGatewayOptions.location());
     contentJson.addProperty("name", createTransitGatewayOptions.name());
+    if (createTransitGatewayOptions.allowGreTrafficAcrossZones() != null) {
+      contentJson.addProperty("allow_gre_traffic_across_zones", createTransitGatewayOptions.allowGreTrafficAcrossZones());
+    }
     if (createTransitGatewayOptions.global() != null) {
       contentJson.addProperty("global", createTransitGatewayOptions.global());
     }
@@ -300,6 +303,9 @@ public ServiceCall<TransitGateway> updateTransitGateway(UpdateTransitGatewayOpti
     builder.header("Accept", "application/json");
     builder.query("version", String.valueOf(this.version));
     final JsonObject contentJson = new JsonObject();
+    if (updateTransitGatewayOptions.allowGreTrafficAcrossZones() != null) {
+      contentJson.addProperty("allow_gre_traffic_across_zones", updateTransitGatewayOptions.allowGreTrafficAcrossZones());
+    }
     if (updateTransitGatewayOptions.global() != null) {
       contentJson.addProperty("global", updateTransitGatewayOptions.global());
     }
@@ -391,7 +397,7 @@ public ServiceCall<TransitGatewayConnectionCollection> listTransitGatewayConnect
   }
 
   /**
-   * Add connection to a Transit Gateway.
+   * Adds a connection to a Transit Gateway.
    *
    * Add a connection to Transit Gateway.
    *
@@ -418,6 +424,9 @@ public ServiceCall<TransitGatewayConnectionCust> createTransitGatewayConnection(
     if (createTransitGatewayConnectionOptions.baseNetworkType() != null) {
       contentJson.addProperty("base_network_type", createTransitGatewayConnectionOptions.baseNetworkType());
     }
+    if (createTransitGatewayConnectionOptions.cidr() != null) {
+      contentJson.addProperty("cidr", createTransitGatewayConnectionOptions.cidr());
+    }
     if (createTransitGatewayConnectionOptions.localGatewayIp() != null) {
       contentJson.addProperty("local_gateway_ip", createTransitGatewayConnectionOptions.localGatewayIp());
     }
@@ -461,7 +470,7 @@ public ServiceCall<TransitGatewayConnectionCust> createTransitGatewayConnection(
   }
 
   /**
-   * Remove connection from Transit Gateway.
+   * Removes a connection from Transit Gateway.
    *
    * After the specified connection is detached, entities still within the Transit Gateway will no longer be able to
    * communicate directly to it through the IBM Cloud private backbone.
@@ -546,7 +555,7 @@ public ServiceCall<TransitGatewayConnectionCust> updateTransitGatewayConnection(
   }
 
   /**
-   * Perform actions on a connection for a Transit Gateway.
+   * Performs actions on a connection for a Transit Gateway.
    *
    * Allow a network owner to approve or reject a cross-account connection request.
    *
@@ -575,38 +584,38 @@ public ServiceCall<Void> createTransitGatewayConnectionActions(CreateTransitGate
   /**
    * Retrieves specified Transit Gateway redundant gre connection tunnels.
    *
-   * This request retrieves a list of all the tunnels for the redundant gre conneciton.
+   * This request retrieves a list of all the tunnels for the redundant gre connection.
    *
-   * @param getTransitGatewayGreTunnelOptions the {@link GetTransitGatewayGreTunnelOptions} containing the options for the call
-   * @return a {@link ServiceCall} with a result of type {@link RedundantGRETunnelCollection}
+   * @param listTransitGatewayGreTunnelOptions the {@link ListTransitGatewayGreTunnelOptions} containing the options for the call
+   * @return a {@link ServiceCall} with a result of type {@link TransitGatewayTunnelCollection}
    */
-  public ServiceCall<RedundantGRETunnelCollection> getTransitGatewayGreTunnel(GetTransitGatewayGreTunnelOptions getTransitGatewayGreTunnelOptions) {
-    com.ibm.cloud.sdk.core.util.Validator.notNull(getTransitGatewayGreTunnelOptions,
-      "getTransitGatewayGreTunnelOptions cannot be null");
+  public ServiceCall<TransitGatewayTunnelCollection> listTransitGatewayGreTunnel(ListTransitGatewayGreTunnelOptions listTransitGatewayGreTunnelOptions) {
+    com.ibm.cloud.sdk.core.util.Validator.notNull(listTransitGatewayGreTunnelOptions,
+      "listTransitGatewayGreTunnelOptions cannot be null");
     Map<String, String> pathParamsMap = new HashMap<String, String>();
-    pathParamsMap.put("transit_gateway_id", getTransitGatewayGreTunnelOptions.transitGatewayId());
-    pathParamsMap.put("id", getTransitGatewayGreTunnelOptions.id());
+    pathParamsMap.put("transit_gateway_id", listTransitGatewayGreTunnelOptions.transitGatewayId());
+    pathParamsMap.put("id", listTransitGatewayGreTunnelOptions.id());
     RequestBuilder builder = RequestBuilder.get(RequestBuilder.resolveRequestUrl(getServiceUrl(), "/transit_gateways/{transit_gateway_id}/connections/{id}/tunnels", pathParamsMap));
-    Map<String, String> sdkHeaders = SdkCommon.getSdkHeaders("transit_gateway_apis", "v1", "getTransitGatewayGreTunnel");
+    Map<String, String> sdkHeaders = SdkCommon.getSdkHeaders("transit_gateway_apis", "v1", "listTransitGatewayGreTunnel");
     for (Entry<String, String> header : sdkHeaders.entrySet()) {
       builder.header(header.getKey(), header.getValue());
     }
     builder.header("Accept", "application/json");
     builder.query("version", String.valueOf(this.version));
-    ResponseConverter<RedundantGRETunnelCollection> responseConverter =
-      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<RedundantGRETunnelCollection>() { }.getType());
+    ResponseConverter<TransitGatewayTunnelCollection> responseConverter =
+      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<TransitGatewayTunnelCollection>() { }.getType());
     return createServiceCall(builder.build(), responseConverter);
   }
 
   /**
-   * Create Transit Gateway redundant GRE tunnel.
+   * Creates a Transit Gateway redundant GRE tunnel.
    *
    * Add a tunnel to an existing Redundant GRE connection.
    *
    * @param createTransitGatewayGreTunnelOptions the {@link CreateTransitGatewayGreTunnelOptions} containing the options for the call
-   * @return a {@link ServiceCall} with a result of type {@link RedundantGRETunnelReference}
+   * @return a {@link ServiceCall} with a result of type {@link TransitGatewayTunnel}
    */
-  public ServiceCall<RedundantGRETunnelReference> createTransitGatewayGreTunnel(CreateTransitGatewayGreTunnelOptions createTransitGatewayGreTunnelOptions) {
+  public ServiceCall<TransitGatewayTunnel> createTransitGatewayGreTunnel(CreateTransitGatewayGreTunnelOptions createTransitGatewayGreTunnelOptions) {
     com.ibm.cloud.sdk.core.util.Validator.notNull(createTransitGatewayGreTunnelOptions,
       "createTransitGatewayGreTunnelOptions cannot be null");
     Map<String, String> pathParamsMap = new HashMap<String, String>();
@@ -630,13 +639,13 @@ public ServiceCall<RedundantGRETunnelReference> createTransitGatewayGreTunnel(Cr
       contentJson.addProperty("remote_bgp_asn", createTransitGatewayGreTunnelOptions.remoteBgpAsn());
     }
     builder.bodyJson(contentJson);
-    ResponseConverter<RedundantGRETunnelReference> responseConverter =
-      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<RedundantGRETunnelReference>() { }.getType());
+    ResponseConverter<TransitGatewayTunnel> responseConverter =
+      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<TransitGatewayTunnel>() { }.getType());
     return createServiceCall(builder.build(), responseConverter);
   }
 
   /**
-   * Delete specified Transit Gateway redundant GRE tunnel.
+   * Deletes a specified Transit Gateway redundant GRE tunnel.
    *
    * Remove a tunnel from a redundant GRE connection.
    *
@@ -663,12 +672,12 @@ public ServiceCall<Void> deleteTransitGatewayConnectionTunnels(DeleteTransitGate
   /**
    * Retrieves specified Transit Gateway connection tunnel.
    *
-   * This request retrieves a connection tunnel from the Transit Gateway Connection.
+   * This request retrieves a connection tunnel from the Transit Gateway connection.
    *
    * @param getTransitGatewayConnectionTunnelsOptions the {@link GetTransitGatewayConnectionTunnelsOptions} containing the options for the call
-   * @return a {@link ServiceCall} with a result of type {@link RedundantGRETunnelReference}
+   * @return a {@link ServiceCall} with a result of type {@link TransitGatewayTunnel}
    */
-  public ServiceCall<RedundantGRETunnelReference> getTransitGatewayConnectionTunnels(GetTransitGatewayConnectionTunnelsOptions getTransitGatewayConnectionTunnelsOptions) {
+  public ServiceCall<TransitGatewayTunnel> getTransitGatewayConnectionTunnels(GetTransitGatewayConnectionTunnelsOptions getTransitGatewayConnectionTunnelsOptions) {
     com.ibm.cloud.sdk.core.util.Validator.notNull(getTransitGatewayConnectionTunnelsOptions,
       "getTransitGatewayConnectionTunnelsOptions cannot be null");
     Map<String, String> pathParamsMap = new HashMap<String, String>();
@@ -682,8 +691,8 @@ public ServiceCall<RedundantGRETunnelReference> getTransitGatewayConnectionTunne
     }
     builder.header("Accept", "application/json");
     builder.query("version", String.valueOf(this.version));
-    ResponseConverter<RedundantGRETunnelReference> responseConverter =
-      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<RedundantGRETunnelReference>() { }.getType());
+    ResponseConverter<TransitGatewayTunnel> responseConverter =
+      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<TransitGatewayTunnel>() { }.getType());
     return createServiceCall(builder.build(), responseConverter);
   }
 
@@ -693,9 +702,9 @@ public ServiceCall<RedundantGRETunnelReference> getTransitGatewayConnectionTunne
    * Update the name of a connection tunnel.
    *
    * @param updateTransitGatewayConnectionTunnelsOptions the {@link UpdateTransitGatewayConnectionTunnelsOptions} containing the options for the call
-   * @return a {@link ServiceCall} with a result of type {@link RedundantGRETunnelReference}
+   * @return a {@link ServiceCall} with a result of type {@link TransitGatewayTunnel}
    */
-  public ServiceCall<RedundantGRETunnelReference> updateTransitGatewayConnectionTunnels(UpdateTransitGatewayConnectionTunnelsOptions updateTransitGatewayConnectionTunnelsOptions) {
+  public ServiceCall<TransitGatewayTunnel> updateTransitGatewayConnectionTunnels(UpdateTransitGatewayConnectionTunnelsOptions updateTransitGatewayConnectionTunnelsOptions) {
     com.ibm.cloud.sdk.core.util.Validator.notNull(updateTransitGatewayConnectionTunnelsOptions,
       "updateTransitGatewayConnectionTunnelsOptions cannot be null");
     Map<String, String> pathParamsMap = new HashMap<String, String>();
@@ -709,18 +718,14 @@ public ServiceCall<RedundantGRETunnelReference> updateTransitGatewayConnectionTu
     }
     builder.header("Accept", "application/json");
     builder.query("version", String.valueOf(this.version));
-    final JsonObject contentJson = new JsonObject();
-    if (updateTransitGatewayConnectionTunnelsOptions.name() != null) {
-      contentJson.addProperty("name", updateTransitGatewayConnectionTunnelsOptions.name());
-    }
-    builder.bodyJson(contentJson);
-    ResponseConverter<RedundantGRETunnelReference> responseConverter =
-      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<RedundantGRETunnelReference>() { }.getType());
+    builder.bodyContent(com.ibm.cloud.sdk.core.util.GsonSingleton.getGsonWithoutPrettyPrinting().toJson(updateTransitGatewayConnectionTunnelsOptions.transitGatewayTunnelPatch()), "application/merge-patch+json");
+    ResponseConverter<TransitGatewayTunnel> responseConverter =
+      ResponseConverterUtils.getValue(new com.google.gson.reflect.TypeToken<TransitGatewayTunnel>() { }.getType());
     return createServiceCall(builder.build(), responseConverter);
   }
 
   /**
-   * List all locations that support Transit Gateways.
+   * Lists all locations that support Transit Gateways.
    *
    * List all locations that support Transit Gateways.
    *
@@ -741,7 +746,7 @@ public ServiceCall<TSCollection> listGatewayLocations(ListGatewayLocationsOption
   }
 
   /**
-   * List all locations that support Transit Gateways.
+   * Lists all locations that support Transit Gateways.
    *
    * List all locations that support Transit Gateways.
    *
@@ -752,7 +757,7 @@ public ServiceCall<TSCollection> listGatewayLocations() {
   }
 
   /**
-   * Show the details of a given Transit Gateway location.
+   * Shows the details of a given Transit Gateway location.
    *
    * Get the details of a Transit Gateway Location.
    *
@@ -803,9 +808,9 @@ public ServiceCall<PrefixFilterCollection> listTransitGatewayConnectionPrefixFil
   }
 
   /**
-   * Add a prefix filter to a Transit Gateway Connection.
+   * Add a prefix filter to a Transit Gateway connection.
    *
-   * Add a prefix filter to a Transit Gateway Connection.
+   * Add a prefix filter to a Transit Gateway connection.
    *
    * @param createTransitGatewayConnectionPrefixFilterOptions the {@link CreateTransitGatewayConnectionPrefixFilterOptions} containing the options for the call
    * @return a {@link ServiceCall} with a result of type {@link PrefixFilterCust}
@@ -842,9 +847,9 @@ public ServiceCall<PrefixFilterCust> createTransitGatewayConnectionPrefixFilter(
   }
 
   /**
-   * Replaces the prefix filters of the Transit Gateway Connection.
+   * Replaces the prefix filters of the Transit Gateway connection.
    *
-   * Replaces the prefix filters of the Transit Gateway Connection.
+   * Replaces the prefix filters of the Transit Gateway connection.
    *
    * @param replaceTransitGatewayConnectionPrefixFilterOptions the {@link ReplaceTransitGatewayConnectionPrefixFilterOptions} containing the options for the call
    * @return a {@link ServiceCall} with a result of type {@link PrefixFilterCollection}
@@ -871,7 +876,7 @@ public ServiceCall<PrefixFilterCollection> replaceTransitGatewayConnectionPrefix
   }
 
   /**
-   * Remove prefix filter from Transit Gateway Connection.
+   * Remove prefix filter from Transit Gateway connection.
    *
    * Delete a prefix filter.
    *
@@ -898,7 +903,7 @@ public ServiceCall<Void> deleteTransitGatewayConnectionPrefixFilter(DeleteTransi
   /**
    * Retrieves specified Transit Gateway connection prefix filter.
    *
-   * This request retrieves a prefix filter from the Transit Gateway Connection.
+   * This request retrieves a prefix filter from the Transit Gateway connection.
    *
    * @param getTransitGatewayConnectionPrefixFilterOptions the {@link GetTransitGatewayConnectionPrefixFilterOptions} containing the options for the call
    * @return a {@link ServiceCall} with a result of type {@link PrefixFilterCust}
@@ -967,7 +972,7 @@ public ServiceCall<PrefixFilterCust> updateTransitGatewayConnectionPrefixFilter(
   }
 
   /**
-   * List route reports.
+   * Lists route reports.
    *
    * Retrieve all route reports for the specified Transit Gateway.  There will normally be at most one completed report
    * and one pending report.  Additionally, completed route reports are written to IBM Cloud Activity Tracker.
@@ -993,7 +998,7 @@ public ServiceCall<RouteReportCollection> listTransitGatewayRouteReports(ListTra
   }
 
   /**
-   * Request a route report.
+   * Requests a route report.
    *
    * Request route report generation.  While report generation is in progress, additional requests to generate a report
    * are ignored and return the current pending report.
@@ -1019,7 +1024,7 @@ public ServiceCall<RouteReport> createTransitGatewayRouteReport(CreateTransitGat
   }
 
   /**
-   * Delete route report.
+   * Deletes a route report.
    *
    * Delete a route report.
    *
@@ -1043,7 +1048,7 @@ public ServiceCall<Void> deleteTransitGatewayRouteReport(DeleteTransitGatewayRou
   }
 
   /**
-   * Retrieve route report.
+   * Retrieves a route report.
    *
    * Retrieve a route report.
    *
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ConnectionsPager.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ConnectionsPager.java
index 160aca7c4..7886eb7a2 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ConnectionsPager.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ConnectionsPager.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptions.java
index 3d888b5d0..4ff7cc18b 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptions.java
index 1b8fb74e9..dab866c8c 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -40,13 +40,17 @@ public interface NetworkType {
     String POWER_VIRTUAL_SERVER = "power_virtual_server";
     /** redundant_gre. */
     String REDUNDANT_GRE = "redundant_gre";
+    /** vmware. */
+    String VMWARE = "vmware";
+    /** vpn_gateway. */
+    String VPN_GATEWAY = "vpn_gateway";
   }
 
   /**
    * The type of network the Unbound GRE tunnel is targeting. This field is required for network type
-   * 'unbound_gre_tunnel' and must be set to 'classic'.  For a 'redundant_gre' network type, the value is required and
-   * can be either VPC or Classic. This field is required to be unspecified for network type 'classic', 'directlink',
-   * 'vpc', 'power_virtual_server' and 'gre_tunnel' connections.
+   * `unbound_gre_tunnel` and must be set to `classic`.  For a `redundant_gre` network type, the value is required and
+   * can be either VPC or Classic. This field is required to be unspecified for network type `classic`, `vmware`,
+   * `directlink`, `vpc`, `power_virtual_server`, `vpn_gateway` and `gre_tunnel` connections.
    */
   public interface BaseNetworkType {
     /** classic. */
@@ -57,8 +61,9 @@ public interface BaseNetworkType {
 
   /**
    * Default setting of permit or deny which applies to any routes that don't match a specified filter. This field is
-   * optional for network type 'classic', 'vpc', 'directlink', and 'power_virtual_server' connections. This field is
-   * required to be unspecified for network type 'gre_tunnel', 'unbound_gre_tunnel' and 'redundant_gre' connections.
+   * optional for network type `classic`, `vpc`, `directlink`, and `power_virtual_server` connections. This field is
+   * required to be unspecified for network type `gre_tunnel`, `unbound_gre_tunnel`, `vpn_gateway` and `redundant_gre`
+   * connections.
    */
   public interface PrefixFiltersDefault {
     /** permit. */
@@ -71,6 +76,7 @@ public interface PrefixFiltersDefault {
   protected String networkType;
   protected String baseConnectionId;
   protected String baseNetworkType;
+  protected String cidr;
   protected String localGatewayIp;
   protected String localTunnelIp;
   protected String name;
@@ -81,7 +87,7 @@ public interface PrefixFiltersDefault {
   protected Long remoteBgpAsn;
   protected String remoteGatewayIp;
   protected String remoteTunnelIp;
-  protected List<TransitGatewayRedundantGRETunnelTemplate> tunnels;
+  protected List<TransitGatewayTunnelTemplate> tunnels;
   protected ZoneIdentity zone;
 
   /**
@@ -92,6 +98,7 @@ public static class Builder {
     private String networkType;
     private String baseConnectionId;
     private String baseNetworkType;
+    private String cidr;
     private String localGatewayIp;
     private String localTunnelIp;
     private String name;
@@ -102,7 +109,7 @@ public static class Builder {
     private Long remoteBgpAsn;
     private String remoteGatewayIp;
     private String remoteTunnelIp;
-    private List<TransitGatewayRedundantGRETunnelTemplate> tunnels;
+    private List<TransitGatewayTunnelTemplate> tunnels;
     private ZoneIdentity zone;
 
     /**
@@ -115,6 +122,7 @@ private Builder(CreateTransitGatewayConnectionOptions createTransitGatewayConnec
       this.networkType = createTransitGatewayConnectionOptions.networkType;
       this.baseConnectionId = createTransitGatewayConnectionOptions.baseConnectionId;
       this.baseNetworkType = createTransitGatewayConnectionOptions.baseNetworkType;
+      this.cidr = createTransitGatewayConnectionOptions.cidr;
       this.localGatewayIp = createTransitGatewayConnectionOptions.localGatewayIp;
       this.localTunnelIp = createTransitGatewayConnectionOptions.localTunnelIp;
       this.name = createTransitGatewayConnectionOptions.name;
@@ -177,11 +185,11 @@ public Builder addPrefixFilters(TransitGatewayConnectionPrefixFilter prefixFilte
      * @param tunnels the new tunnels
      * @return the CreateTransitGatewayConnectionOptions builder
      */
-    public Builder addTunnels(TransitGatewayRedundantGRETunnelTemplate tunnels) {
+    public Builder addTunnels(TransitGatewayTunnelTemplate tunnels) {
       com.ibm.cloud.sdk.core.util.Validator.notNull(tunnels,
         "tunnels cannot be null");
       if (this.tunnels == null) {
-        this.tunnels = new ArrayList<TransitGatewayRedundantGRETunnelTemplate>();
+        this.tunnels = new ArrayList<TransitGatewayTunnelTemplate>();
       }
       this.tunnels.add(tunnels);
       return this;
@@ -233,6 +241,17 @@ public Builder baseNetworkType(String baseNetworkType) {
       return this;
     }
 
+    /**
+     * Set the cidr.
+     *
+     * @param cidr the cidr
+     * @return the CreateTransitGatewayConnectionOptions builder
+     */
+    public Builder cidr(String cidr) {
+      this.cidr = cidr;
+      return this;
+    }
+
     /**
      * Set the localGatewayIp.
      *
@@ -351,7 +370,7 @@ public Builder remoteTunnelIp(String remoteTunnelIp) {
      * @param tunnels the tunnels
      * @return the CreateTransitGatewayConnectionOptions builder
      */
-    public Builder tunnels(List<TransitGatewayRedundantGRETunnelTemplate> tunnels) {
+    public Builder tunnels(List<TransitGatewayTunnelTemplate> tunnels) {
       this.tunnels = tunnels;
       return this;
     }
@@ -379,6 +398,7 @@ protected CreateTransitGatewayConnectionOptions(Builder builder) {
     networkType = builder.networkType;
     baseConnectionId = builder.baseConnectionId;
     baseNetworkType = builder.baseNetworkType;
+    cidr = builder.cidr;
     localGatewayIp = builder.localGatewayIp;
     localTunnelIp = builder.localTunnelIp;
     name = builder.name;
@@ -427,14 +447,14 @@ public String networkType() {
   /**
    * Gets the baseConnectionId.
    *
-   * network_type 'gre_tunnel' connections must be created over an existing network_type 'classic' connection. This
-   * field must specify the ID of an active transit gateway network_type 'classic' connection in the same transit
+   * network_type `gre_tunnel` connections must be created over an existing network_type `classic` connection. This
+   * field must specify the ID of an active transit gateway network_type `classic` connection in the same transit
    * gateway.
    *
-   * This field is required for network type 'gre_tunnel' connections.
+   * This field is required for network type `gre_tunnel` connections.
    *
-   * This field is required to be unspecified for network type 'classic', 'directlink', 'vpc',
-   * 'power_virtual_server', 'unbound_gre_tunnel' and 'redundant_gre' connections.
+   * This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `unbound_gre_tunnel`, `vpn_gateway` and `redundant_gre` connections.
    *
    * @return the baseConnectionId
    * @deprecated this method is deprecated and may be removed in a future release
@@ -448,9 +468,9 @@ public String baseConnectionId() {
    * Gets the baseNetworkType.
    *
    * The type of network the Unbound GRE tunnel is targeting. This field is required for network type
-   * 'unbound_gre_tunnel' and must be set to 'classic'.  For a 'redundant_gre' network type, the value is required and
-   * can be either VPC or Classic. This field is required to be unspecified for network type 'classic', 'directlink',
-   * 'vpc', 'power_virtual_server' and 'gre_tunnel' connections.
+   * `unbound_gre_tunnel` and must be set to `classic`.  For a `redundant_gre` network type, the value is required and
+   * can be either VPC or Classic. This field is required to be unspecified for network type `classic`, `vmware`,
+   * `directlink`, `vpc`, `power_virtual_server`, `vpn_gateway` and `gre_tunnel` connections.
    *
    * @return the baseNetworkType
    */
@@ -458,12 +478,28 @@ public String baseNetworkType() {
     return baseNetworkType;
   }
 
+  /**
+   * Gets the cidr.
+   *
+   * network_type 'vpn_gateway' connections use 'cdr' to specify the CIDR to use for the VPN GRE tunnels.
+   *
+   * This field is required for network type `vpn_gateway` connections.
+   *
+   * This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `gre_tunnel`, `unbound_gre_tunnel`, and `redundant_gre` connections.
+   *
+   * @return the cidr
+   */
+  public String cidr() {
+    return cidr;
+  }
+
   /**
    * Gets the localGatewayIp.
    *
-   * Local gateway IP address. This field is required for network type 'gre_tunnel' and 'unbound_gre_tunnel'
-   * connections. This field is required to be unspecified for network type 'classic', 'directlink', 'vpc',
-   * 'power_virtual_server' and 'redundant_gre' connections.
+   * Local gateway IP address. This field is required for network type `gre_tunnel` and `unbound_gre_tunnel`
+   * connections. This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `vpn_gateway` and `redundant_gre` connections.
    *
    * @return the localGatewayIp
    */
@@ -477,10 +513,10 @@ public String localGatewayIp() {
    * Local tunnel IP address. The local_tunnel_ip and remote_tunnel_ip addresses must be in the same /30 network.
    * Neither can be the network nor broadcast addresses.
    *
-   * This field is required for network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * This field is required for network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
-   * This field is required to be unspecified for network type 'classic', 'directlink', 'vpc', 'power_virtual_server'
-   * and 'redundant_gre' connections.
+   * This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `vpn_gateway` and `redundant_gre` connections.
    *
    * @return the localTunnelIp
    */
@@ -491,12 +527,13 @@ public String localTunnelIp() {
   /**
    * Gets the name.
    *
-   * The user-defined name for this transit gateway connection. Network type 'vpc'  connections are defaulted to the
-   * name of the VPC.  Network type 'classic' connections are named 'Classic'.
+   * The user-defined name for this transit gateway connection. Network type `vpc`  connections are defaulted to the
+   * name of the VPC.  Network type `classic` connections are named `classic`.
    *
-   * This field is required for network type 'gre_tunnel', 'unbound_gre_tunnel' and 'redundant_gre' connections.
+   * This field is required for network type `power_virtual_server`, `directlink`, `vmware`, `gre_tunnel`,
+   * `unbound_gre_tunnel`, `vpn_gateway` and `redundant_gre` connections.
    *
-   * This field is optional for network type 'classic', 'directlink', 'vpc' and 'power_virtual_server' connections.
+   * This field is optional for network type `classic`, `vpc` connections.
    *
    * @return the name
    */
@@ -508,8 +545,8 @@ public String name() {
    * Gets the networkAccountId.
    *
    * The ID of the account which owns the network that is being connected. Generally only used if the network is in a
-   * different account than the gateway. This field is required for type 'unbound_gre_tunnel' when the
-   * associated_network_type is 'classic' or network_type is 'redundant_gre' and the GRE tunnel is in a different
+   * different account than the gateway. This field is required for type `unbound_gre_tunnel` when the
+   * associated_network_type is `classic` or network_type is `redundant_gre` and the GRE tunnel is in a different
    * account than the gateway.
    *
    * @return the networkAccountId
@@ -521,11 +558,12 @@ public String networkAccountId() {
   /**
    * Gets the networkId.
    *
-   * The ID of the network being connected via this connection. For network types 'vpc','power_virtual_server' and
-   * 'directlink' this is the CRN of the VPC / PowerVS / Direct Link gateway respectively. This field is required for
-   * network type 'vpc', 'power_virtual_server' and 'directlink' connections.  It is also required for 'redundant_gre'
-   * connections when the base_network_type is set to VPC. This field is required to be unspecified for network type
-   * 'classic', 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * The ID of the network being connected via this connection. For network types `vpc`,`power_virtual_server`,
+   * `vmware`, `directlink` and `vpn_gateway` this is the CRN of the VPC / PowerVS / VDC / Direct Link / VPN gateway
+   * respectively. This field is required for network type `vpc`, `power_virtual_server`, `vmware`, `vpn_gateway`, and
+   * `directlink` connections.  It is also required for `redundant_gre` connections when the base_network_type is set to
+   * VPC. This field is required to be unspecified for network type `classic`, `gre_tunnel` and `unbound_gre_tunnel`
+   * connections.
    *
    * @return the networkId
    */
@@ -537,11 +575,11 @@ public String networkId() {
    * Gets the prefixFilters.
    *
    * Array of prefix route filters for a transit gateway connection. Prefix filters can be specified for netowrk type
-   * 'vpc', 'classic', 'power_virtual_server' and 'directlink' connections. They are not allowed for type 'gre_tunnel'
+   * `vpc`, `classic`, `power_virtual_server` and `directlink` connections. They are not allowed for type `gre_tunnel`
    * connections. This is order dependent with those first in the array being applied first, and those at the end of the
-   * array being applied last, or just before applying the default. This field is optional for network type 'classic',
-   * 'vpc', 'directlink', and 'power_virtual_server' connections. This field is required to be unspecified for network
-   * type 'gre_tunnel', 'unbound_gre_tunnel' and 'redundant_gre' connections.
+   * array being applied last, or just before applying the default. This field is optional for network type `classic`,
+   * `vpc`, `directlink`, and `power_virtual_server` connections. This field is required to be unspecified for network
+   * type `gre_tunnel`, `unbound_gre_tunnel`, `vpn_gateway` and `redundant_gre` connections.
    *
    * @return the prefixFilters
    */
@@ -553,8 +591,9 @@ public List<TransitGatewayConnectionPrefixFilter> prefixFilters() {
    * Gets the prefixFiltersDefault.
    *
    * Default setting of permit or deny which applies to any routes that don't match a specified filter. This field is
-   * optional for network type 'classic', 'vpc', 'directlink', and 'power_virtual_server' connections. This field is
-   * required to be unspecified for network type 'gre_tunnel', 'unbound_gre_tunnel' and 'redundant_gre' connections.
+   * optional for network type `classic`, `vpc`, `directlink`, and `power_virtual_server` connections. This field is
+   * required to be unspecified for network type `gre_tunnel`, `unbound_gre_tunnel`, `vpn_gateway` and `redundant_gre`
+   * connections.
    *
    * @return the prefixFiltersDefault
    */
@@ -566,13 +605,13 @@ public String prefixFiltersDefault() {
    * Gets the remoteBgpAsn.
    *
    * Remote network BGP ASN. The following ASN values are reserved and unavailable 0, 13884, 36351, 64512-64513, 65100,
-   * 65200-65234, 65402-65433, 65500 and 4201065000-4201065999. If 'remote_bgp_asn' is omitted on gre_tunnel or
+   * 65200-65234, 65402-65433, 65500 and 4201065000-4201065999. If `remote_bgp_asn` is omitted on gre_tunnel or
    * unbound_gre_tunnel connection create requests IBM will assign an ASN.
    *
-   * This field is optional for network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * This field is optional for network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
-   * This field is required to be unspecified for network type 'classic', 'directlink', 'vpc', 'power_virtual_server'
-   * and 'gre_tunnel' connections.
+   * This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `vpn_gateway` and `gre_tunnel` connections.
    *
    * @return the remoteBgpAsn
    */
@@ -583,9 +622,9 @@ public Long remoteBgpAsn() {
   /**
    * Gets the remoteGatewayIp.
    *
-   * Remote gateway IP address. This field is required for network type 'gre_tunnel' and 'unbound_gre_tunnel'
-   * connections. This field is required to be unspecified for network type 'classic', 'directlink', 'vpc',
-   * 'power_virtual_server' and 'redundant_gre' connections.
+   * Remote gateway IP address. This field is required for network type `gre_tunnel` and `unbound_gre_tunnel`
+   * connections. This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `vpn_gateway` and `redundant_gre` connections.
    *
    * @return the remoteGatewayIp
    */
@@ -599,10 +638,10 @@ public String remoteGatewayIp() {
    * Remote tunnel IP address. The local_tunnel_ip and remote_tunnel_ip addresses must be in the same /30 network.
    * Neither can be the network nor broadcast addresses.
    *
-   * This field is required for network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * This field is required for network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
-   * This field is required to be unspecified for network type 'classic', 'directlink', 'vpc',  'power_virtual_server'
-   * and 'redundant_gre' connections.
+   * This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server`, `vpn_gateway` and `redundant_gre` connections.
    *
    * @return the remoteTunnelIp
    */
@@ -614,11 +653,11 @@ public String remoteTunnelIp() {
    * Gets the tunnels.
    *
    * Array of GRE tunnels for a transit gateway redundant GRE tunnel connection.  This field is required for
-   * 'redundant_gre' connections.
+   * `redundant_gre` connections.
    *
    * @return the tunnels
    */
-  public List<TransitGatewayRedundantGRETunnelTemplate> tunnels() {
+  public List<TransitGatewayTunnelTemplate> tunnels() {
     return tunnels;
   }
 
@@ -628,10 +667,10 @@ public List<TransitGatewayRedundantGRETunnelTemplate> tunnels() {
    * Specify the connection's location.  The specified availability zone must reside in the gateway's region.
    * Use the IBM Cloud global catalog to list zones within the desired region.
    *
-   * This field is required for network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * This field is required for network type `gre_tunnel`, `unbound_gre_tunnel` and `vpn_gateway` connections.
    *
-   * This field is required to be unspecified for network type 'classic', 'directlink', 'vpc', 'power_virtual_server'
-   * and 'redundant_gre' connections.
+   * This field is required to be unspecified for network type `classic`, `vmware`, `directlink`, `vpc`,
+   * `power_virtual_server` and `redundant_gre` connections.
    *
    * @return the zone
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptions.java
index 485a69f8b..e4acb4cdc 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -237,10 +237,10 @@ public String action() {
   /**
    * Gets the prefix.
    *
-   * The IPv4 Prefix to be matched by this filter. If both the 'le' and 'ge' are zero, then this filter will only apply
-   * to routes that exactly match this prefix, while a non-zero value for either 'le' or 'ge', this filter can apply to
+   * The IPv4 Prefix to be matched by this filter. If both the `le` and `ge` are zero, then this filter will only apply
+   * to routes that exactly match this prefix, while a non-zero value for either `le` or `ge`, this filter can apply to
    * multiple routes with different prefix lengths, but will still only apply to prefixes contained in the address space
-   * defined by 'prefix'.
+   * defined by `prefix`.
    *
    * @return the prefix
    */
@@ -268,12 +268,12 @@ public String before() {
    * Gets the ge.
    *
    * Defines the minimum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length greater than or equal to this value.
+   * within the `prefix` that have a prefix length greater than or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'ge' route matching
-   * behavior. If the 'le' value is non-zero the the 'ge' value must between the prefix length and the
-   * 'le' value, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `ge` route matching
+   * behavior. If the `le` value is non-zero the the `ge` value must between the prefix length and the
+   * `le` value, inclusive.
    *
    * @return the ge
    */
@@ -285,11 +285,11 @@ public Long ge() {
    * Gets the le.
    *
    * Defines the maximum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length less than or equal to this value.
+   * within the `prefix` that have a prefix length less than or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'le' route matching
-   * behavior. If the 'ge' value is non-zero the the 'le' value must between the 'ge' value and 32, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `le` route matching
+   * behavior. If the `ge` value is non-zero the the `le` value must between the `ge` value and 32, inclusive.
    *
    * @return the le
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptions.java
index dbc0371c4..851da83fb 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -332,7 +332,7 @@ public ZoneIdentity zone() {
    * Gets the remoteBgpAsn.
    *
    * Remote network BGP ASN. The following ASN values are reserved and unavailable 0, 13884, 36351, 64512-64513, 65100,
-   * 65200-65234, 65402-65433, 65500 and 4201065000-4201065999. If 'remote_bgp_asn' is omitted on create requests, IBM
+   * 65200-65234, 65402-65433, 65500 and 4201065000-4201065999. If `remote_bgp_asn` is omitted on create requests, IBM
    * will assign an ASN.
    *
    * @return the remoteBgpAsn
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptions.java
index 36f4b09bc..41b9659d5 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -21,6 +21,7 @@ public class CreateTransitGatewayOptions extends GenericModel {
 
   protected String location;
   protected String name;
+  protected Boolean allowGreTrafficAcrossZones;
   protected Boolean global;
   protected ResourceGroupIdentity resourceGroup;
 
@@ -30,6 +31,7 @@ public class CreateTransitGatewayOptions extends GenericModel {
   public static class Builder {
     private String location;
     private String name;
+    private Boolean allowGreTrafficAcrossZones;
     private Boolean global;
     private ResourceGroupIdentity resourceGroup;
 
@@ -41,6 +43,7 @@ public static class Builder {
     private Builder(CreateTransitGatewayOptions createTransitGatewayOptions) {
       this.location = createTransitGatewayOptions.location;
       this.name = createTransitGatewayOptions.name;
+      this.allowGreTrafficAcrossZones = createTransitGatewayOptions.allowGreTrafficAcrossZones;
       this.global = createTransitGatewayOptions.global;
       this.resourceGroup = createTransitGatewayOptions.resourceGroup;
     }
@@ -93,6 +96,17 @@ public Builder name(String name) {
       return this;
     }
 
+    /**
+     * Set the allowGreTrafficAcrossZones.
+     *
+     * @param allowGreTrafficAcrossZones the allowGreTrafficAcrossZones
+     * @return the CreateTransitGatewayOptions builder
+     */
+    public Builder allowGreTrafficAcrossZones(Boolean allowGreTrafficAcrossZones) {
+      this.allowGreTrafficAcrossZones = allowGreTrafficAcrossZones;
+      return this;
+    }
+
     /**
      * Set the global.
      *
@@ -125,6 +139,7 @@ protected CreateTransitGatewayOptions(Builder builder) {
       "name cannot be null");
     location = builder.location;
     name = builder.name;
+    allowGreTrafficAcrossZones = builder.allowGreTrafficAcrossZones;
     global = builder.global;
     resourceGroup = builder.resourceGroup;
   }
@@ -152,7 +167,7 @@ public String location() {
   /**
    * Gets the name.
    *
-   * Name Transit Gateway Services.
+   * A human readable name for the transit gateway.
    *
    * @return the name
    */
@@ -160,6 +175,17 @@ public String name() {
     return name;
   }
 
+  /**
+   * Gets the allowGreTrafficAcrossZones.
+   *
+   * Allow GRE traffic in this gateway to flow across zones.
+   *
+   * @return the allowGreTrafficAcrossZones
+   */
+  public Boolean allowGreTrafficAcrossZones() {
+    return allowGreTrafficAcrossZones;
+  }
+
   /**
    * Gets the global.
    *
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptions.java
index 4c42a9e27..d98c407b5 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptions.java
index 65430fc66..000ec2027 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptions.java
index 5573949fc..f381108c2 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptions.java
index 0fad5ebc8..b37714b2a 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptions.java
index d3b757c29..78975e315 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptions.java
index 82857fa17..c37efb775 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptions.java
index e29364122..105ab590c 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptions.java
index 1114c2262..5bda17ab8 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptions.java
index 49cc2c0f9..7734e41be 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptions.java
index c2f6c202d..b24ac1122 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptions.java
index 0d38b043a..e95095d6f 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptions.java
index 30f9be424..474814668 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptions.java
index 90481896a..5b3bbbce0 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptions.java
index 7877c70b7..4e3d5e5e6 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptions.java
index 43a0a6b39..8d30ae79f 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptions.java
index 4a65bb6fb..3d49b3a89 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayGreTunnelOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayGreTunnelOptions.java
new file mode 100644
index 000000000..6d36c6505
--- /dev/null
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayGreTunnelOptions.java
@@ -0,0 +1,133 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.ibm.cloud.sdk.core.service.model.GenericModel;
+
+/**
+ * The listTransitGatewayGreTunnel options.
+ */
+public class ListTransitGatewayGreTunnelOptions extends GenericModel {
+
+  protected String transitGatewayId;
+  protected String id;
+
+  /**
+   * Builder.
+   */
+  public static class Builder {
+    private String transitGatewayId;
+    private String id;
+
+    /**
+     * Instantiates a new Builder from an existing ListTransitGatewayGreTunnelOptions instance.
+     *
+     * @param listTransitGatewayGreTunnelOptions the instance to initialize the Builder with
+     */
+    private Builder(ListTransitGatewayGreTunnelOptions listTransitGatewayGreTunnelOptions) {
+      this.transitGatewayId = listTransitGatewayGreTunnelOptions.transitGatewayId;
+      this.id = listTransitGatewayGreTunnelOptions.id;
+    }
+
+    /**
+     * Instantiates a new builder.
+     */
+    public Builder() {
+    }
+
+    /**
+     * Instantiates a new builder with required properties.
+     *
+     * @param transitGatewayId the transitGatewayId
+     * @param id the id
+     */
+    public Builder(String transitGatewayId, String id) {
+      this.transitGatewayId = transitGatewayId;
+      this.id = id;
+    }
+
+    /**
+     * Builds a ListTransitGatewayGreTunnelOptions.
+     *
+     * @return the new ListTransitGatewayGreTunnelOptions instance
+     */
+    public ListTransitGatewayGreTunnelOptions build() {
+      return new ListTransitGatewayGreTunnelOptions(this);
+    }
+
+    /**
+     * Set the transitGatewayId.
+     *
+     * @param transitGatewayId the transitGatewayId
+     * @return the ListTransitGatewayGreTunnelOptions builder
+     */
+    public Builder transitGatewayId(String transitGatewayId) {
+      this.transitGatewayId = transitGatewayId;
+      return this;
+    }
+
+    /**
+     * Set the id.
+     *
+     * @param id the id
+     * @return the ListTransitGatewayGreTunnelOptions builder
+     */
+    public Builder id(String id) {
+      this.id = id;
+      return this;
+    }
+  }
+
+  protected ListTransitGatewayGreTunnelOptions() { }
+
+  protected ListTransitGatewayGreTunnelOptions(Builder builder) {
+    com.ibm.cloud.sdk.core.util.Validator.notEmpty(builder.transitGatewayId,
+      "transitGatewayId cannot be empty");
+    com.ibm.cloud.sdk.core.util.Validator.notEmpty(builder.id,
+      "id cannot be empty");
+    transitGatewayId = builder.transitGatewayId;
+    id = builder.id;
+  }
+
+  /**
+   * New builder.
+   *
+   * @return a ListTransitGatewayGreTunnelOptions builder
+   */
+  public Builder newBuilder() {
+    return new Builder(this);
+  }
+
+  /**
+   * Gets the transitGatewayId.
+   *
+   * The Transit Gateway identifier.
+   *
+   * @return the transitGatewayId
+   */
+  public String transitGatewayId() {
+    return transitGatewayId;
+  }
+
+  /**
+   * Gets the id.
+   *
+   * The connection identifier.
+   *
+   * @return the id
+   */
+  public String id() {
+    return id;
+  }
+}
+
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptions.java
index 8dc4f1268..998247416 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptions.java
index bd33fc00e..697e0d076 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnection.java
index 002aacad5..fe2cf73ea 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTG.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTG.java
index 2934f74d2..b226a4d19 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTG.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTG.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnection.java
index aca2c98ce..eef283086 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnection.java
index 25fc79b1d..99e9fb80e 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTG.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTG.java
index ca0ff6572..ec40180cc 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTG.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTG.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnection.java
index 00859a7df..e66a52d50 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollection.java
index 0b41bf475..6bdc237b3 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCust.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCust.java
index d3884243c..138f287e0 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCust.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCust.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -87,12 +87,12 @@ public Date getCreatedAt() {
    * Gets the ge.
    *
    * Defines the minimum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length greater or equal to this value.
+   * within the `prefix` that have a prefix length greater or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'ge' route matching
-   * behavior. If the 'le' value is non-zero the the 'ge' value must between the prefix length and the
-   * 'le' value, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `ge` route matching
+   * behavior. If the `le` value is non-zero the the `ge` value must between the prefix length and the
+   * `le` value, inclusive.
    *
    * @return the ge
    */
@@ -115,11 +115,11 @@ public String getId() {
    * Gets the le.
    *
    * Defines the maximum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length less than or equal to this value.
+   * within the `prefix` that have a prefix length less than or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'le' route matching
-   * behavior. If the 'ge' value is non-zero the the 'le' value must between the 'ge' value and 32, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `le` route matching
+   * behavior. If the `ge` value is non-zero the the `le` value must between the `ge` value and 32, inclusive.
    *
    * @return the le
    */
@@ -130,10 +130,10 @@ public Long getLe() {
   /**
    * Gets the prefix.
    *
-   * The IPv4 Prefix to be matched by this filter. If both the 'le' and 'ge' are zero, then this filter will only apply
-   * to routes that exactly match this prefix, while a non-zero value for either 'le' or 'ge', this filter can apply to
+   * The IPv4 Prefix to be matched by this filter. If both the `le` and `ge` are zero, then this filter will only apply
+   * to routes that exactly match this prefix, while a non-zero value for either `le` or `ge`, this filter can apply to
    * multiple routes with different prefix lengths, but will still only apply to prefixes contained in the address space
-   * defined by 'prefix'.
+   * defined by `prefix`.
    *
    * @return the prefix
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPut.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPut.java
index da634227a..02eb79fb6 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPut.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPut.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -163,12 +163,12 @@ public String action() {
    * Gets the ge.
    *
    * Defines the minimum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length greater or equal to this value.
+   * within the `prefix` that have a prefix length greater or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'ge' route matching
-   * behavior. If the 'le' value is non-zero the the 'ge' value must between the prefix length and the
-   * 'le' value, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `ge` route matching
+   * behavior. If the `le` value is non-zero the the `ge` value must between the prefix length and the
+   * `le` value, inclusive.
    *
    * @return the ge
    */
@@ -180,11 +180,11 @@ public Long ge() {
    * Gets the le.
    *
    * Defines the maximum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length less than or equal to this value.
+   * within the `prefix` that have a prefix length less than or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'le' route matching
-   * behavior. If the 'ge' value is non-zero the the 'le' value must between the 'ge' value and 32, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `le` route matching
+   * behavior. If the `ge` value is non-zero the the `le` value must between the `ge` value and 32, inclusive.
    *
    * @return the le
    */
@@ -195,10 +195,10 @@ public Long le() {
   /**
    * Gets the prefix.
    *
-   * The IPv4 Prefix to be matched by this filter. If both the 'le' and 'ge' are zero, then this filter will only apply
-   * to routes that exactly match this prefix, while a non-zero value for either 'le' or 'ge', this filter can apply to
+   * The IPv4 Prefix to be matched by this filter. If both the `le` and `ge` are zero, then this filter will only apply
+   * to routes that exactly match this prefix, while a non-zero value for either `le` or `ge`, this filter can apply to
    * multiple routes with different prefix lengths, but will still only apply to prefixes contained in the address space
-   * defined by 'prefix'.
+   * defined by `prefix`.
    *
    * @return the prefix
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptions.java
index 114c8319a..ca778bf55 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentity.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentity.java
index 68d8476af..faf681866 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentity.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentity.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReference.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReference.java
index 221823c80..73da245fd 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReference.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReference.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReport.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReport.java
index 9932c5abf..141f495e2 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReport.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReport.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollection.java
index d9d7c3bab..25073da7c 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnection.java
index e844d6dab..643dab3cd 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgp.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgp.java
index 5ddd90230..3bc62fcd4 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgp.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgp.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRoute.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRoute.java
index a1c899c9c..0b7ab8e0a 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRoute.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRoute.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRoute.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRoute.java
index 574fa71b4..7774083a6 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRoute.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRoute.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroup.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroup.java
index c60da5cca..80e08041a 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroup.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroup.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollection.java
index 4b091587c..2c53cd10d 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocation.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocation.java
index 201cb3c7c..7d9085bf4 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocation.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocation.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocation.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocation.java
index f990fbd04..5431906d9 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocation.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocation.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -28,7 +28,7 @@ public class TSLocation extends GenericModel {
   protected String type;
   @SerializedName("local_connection_locations")
   protected List<TSLocalLocation> localConnectionLocations;
-  protected List<ZoneReferenceCollection> zones;
+  protected List<ZoneReference> zones;
 
   protected TSLocation() { }
 
@@ -83,7 +83,7 @@ public List<TSLocalLocation> getLocalConnectionLocations() {
    *
    * @return the zones
    */
-  public List<ZoneReferenceCollection> getZones() {
+  public List<ZoneReference> getZones() {
     return zones;
   }
 }
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasic.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasic.java
index 2a4bc2de4..f84c92b97 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasic.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasic.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnection.java
index 7281166b2..07787abe9 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -52,12 +52,16 @@ public interface NetworkType {
     String POWER_VIRTUAL_SERVER = "power_virtual_server";
     /** redundant_gre. */
     String REDUNDANT_GRE = "redundant_gre";
+    /** vmware. */
+    String VMWARE = "vmware";
+    /** vpn_gateway. */
+    String VPN_GATEWAY = "vpn_gateway";
   }
 
   /**
    * Default setting of permit or deny which applies to any routes that don't match a specified filter.
    *
-   * This field does not apply to the 'redundant_gre' network type.
+   * This field does not apply to the `redundant_gre` or `vmware` network types.
    */
   public interface PrefixFiltersDefault {
     /** permit. */
@@ -145,10 +149,10 @@ public interface Status {
   protected String status;
   @SerializedName("transit_gateway")
   protected TransitGatewayReference transitGateway;
-  protected List<TransitGatewayRedundantGRETunnelReference> tunnels;
+  protected List<TransitGatewayTunnel> tunnels;
   @SerializedName("updated_at")
   protected Date updatedAt;
-  protected GreTunnelZoneReference zone;
+  protected ZoneReference zone;
 
   protected TransitConnection() { }
 
@@ -177,9 +181,10 @@ public String getName() {
   /**
    * Gets the networkId.
    *
-   * The ID of the network being connected via this connection. This field is required for some types, such as 'vpc',
-   * 'power_virtual_server', 'directlink' and 'redundant_gre'. For network types 'vpc', 'redundant_gre',
-   * 'power_virtual_server' and 'directlink' this is the CRN of the VPC  / PowerVS / Direct Link gateway respectively.
+   * The ID of the network being connected via this connection. This field is required for some types, such as `vpc`,
+   * `vmware`, `power_virtual_server`, `directlink`, `vpn_gateway` and `redundant_gre`. For network types `vpc`,
+   * `redundant_gre`, `power_virtual_server`, `vmware` and `directlink` this is the CRN of the VPC  / PowerVS / VDC /
+   * Direct Link gateway respectively.
    *
    * @return the networkId
    */
@@ -202,7 +207,7 @@ public String getNetworkType() {
   /**
    * Gets the id.
    *
-   * The unique identifier for this Transit Gateway Connection.
+   * The unique identifier for this Transit Gateway connection.
    *
    * @return the id
    */
@@ -213,10 +218,10 @@ public String getId() {
   /**
    * Gets the baseConnectionId.
    *
-   * network_type 'gre_tunnel' connections use 'base_connection_id' to specify the ID of a network_type 'classic'
+   * network_type `gre_tunnel` connections use `base_connection_id` to specify the ID of a network_type `classic`
    * connection the tunnel is configured over. The specified connection must reside in the same transit gateway and be
-   * in an active state. The 'classic' connection cannot be deleted until any 'gre_tunnel' connections using it are
-   * deleted. This field only applies to and is required for network type 'gre_tunnel' connections.
+   * in an active state. The `classic` connection cannot be deleted until any `gre_tunnel` connections using it are
+   * deleted. This field only applies to and is required for network type `gre_tunnel` connections.
    *
    * @return the baseConnectionId
    * @deprecated this method is deprecated and may be removed in a future release
@@ -240,7 +245,7 @@ public Date getCreatedAt() {
   /**
    * Gets the localBgpAsn.
    *
-   * Local network BGP ASN.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * Local network BGP ASN.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
    * @return the localBgpAsn
    */
@@ -251,7 +256,7 @@ public Long getLocalBgpAsn() {
   /**
    * Gets the localGatewayIp.
    *
-   * Local gateway IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Local gateway IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the localGatewayIp
@@ -263,7 +268,7 @@ public String getLocalGatewayIp() {
   /**
    * Gets the localTunnelIp.
    *
-   * Local tunnel IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Local tunnel IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the localTunnelIp
@@ -275,7 +280,7 @@ public String getLocalTunnelIp() {
   /**
    * Gets the mtu.
    *
-   * GRE tunnel MTU.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * GRE tunnel MTU.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
    * @return the mtu
    */
@@ -301,7 +306,7 @@ public String getNetworkAccountId() {
    * Array of prefix route filters for a transit gateway connection. This is order dependent with those first in the
    * array being applied first, and those at the end of the array is applied last, or just before the default.
    *
-   * This field does not apply to the 'redundant_gre' network type.
+   * This field does not apply to the `redundant_gre` or `vmware` network types.
    *
    * @return the prefixFilters
    */
@@ -314,7 +319,7 @@ public List<TransitGatewayConnectionPrefixFilterReference> getPrefixFilters() {
    *
    * Default setting of permit or deny which applies to any routes that don't match a specified filter.
    *
-   * This field does not apply to the 'redundant_gre' network type.
+   * This field does not apply to the `redundant_gre` or `vmware` network types.
    *
    * @return the prefixFiltersDefault
    */
@@ -325,7 +330,7 @@ public String getPrefixFiltersDefault() {
   /**
    * Gets the remoteBgpAsn.
    *
-   * Remote network BGP ASN.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * Remote network BGP ASN.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
    * @return the remoteBgpAsn
    */
@@ -336,7 +341,7 @@ public Long getRemoteBgpAsn() {
   /**
    * Gets the remoteGatewayIp.
    *
-   * Remote gateway IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Remote gateway IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the remoteGatewayIp
@@ -348,7 +353,7 @@ public String getRemoteGatewayIp() {
   /**
    * Gets the remoteTunnelIp.
    *
-   * Remote tunnel IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Remote tunnel IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the remoteTunnelIp
@@ -396,11 +401,11 @@ public TransitGatewayReference getTransitGateway() {
   /**
    * Gets the tunnels.
    *
-   * Collection of all tunnels for 'redundant_gre' connection.
+   * Collection of all tunnels for `redundant_gre` connection.
    *
    * @return the tunnels
    */
-  public List<TransitGatewayRedundantGRETunnelReference> getTunnels() {
+  public List<TransitGatewayTunnel> getTunnels() {
     return tunnels;
   }
 
@@ -418,11 +423,11 @@ public Date getUpdatedAt() {
   /**
    * Gets the zone.
    *
-   * Location of GRE tunnel.  This field only applies to network type 'gre_tunnel' connections.
+   * Availability zone reference.
    *
    * @return the zone
    */
-  public GreTunnelZoneReference getZone() {
+  public ZoneReference getZone() {
     return zone;
   }
 }
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollection.java
index ebbb6217a..4c9132584 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGateway.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGateway.java
index c94e44bd1..73ae5ac3f 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGateway.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGateway.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -41,13 +41,19 @@ public interface Status {
     String SUSPENDED = "suspended";
   }
 
-  protected String id;
-  protected String crn;
-  protected String name;
-  protected String location;
+  @SerializedName("allow_gre_traffic_across_zones")
+  protected Boolean allowGreTrafficAcrossZones;
+  @SerializedName("connection_count")
+  protected Long connectionCount;
+  @SerializedName("connection_needs_attention")
+  protected Boolean connectionNeedsAttention;
   @SerializedName("created_at")
   protected Date createdAt;
+  protected String crn;
   protected Boolean global;
+  protected String id;
+  protected String location;
+  protected String name;
   @SerializedName("resource_group")
   protected ResourceGroupReference resourceGroup;
   protected String status;
@@ -57,58 +63,58 @@ public interface Status {
   protected TransitGateway() { }
 
   /**
-   * Gets the id.
+   * Gets the allowGreTrafficAcrossZones.
    *
-   * The unique identifier for this Transit Gateway.
+   * Allow GRE traffic in this gateway to flow across zones.
    *
-   * @return the id
+   * @return the allowGreTrafficAcrossZones
    */
-  public String getId() {
-    return id;
+  public Boolean isAllowGreTrafficAcrossZones() {
+    return allowGreTrafficAcrossZones;
   }
 
   /**
-   * Gets the crn.
+   * Gets the connectionCount.
    *
-   * The CRN for this Transit Gateway.
+   * The number of connections associated with this Transit Gateway.
    *
-   * @return the crn
+   * @return the connectionCount
    */
-  public String getCrn() {
-    return crn;
+  public Long getConnectionCount() {
+    return connectionCount;
   }
 
   /**
-   * Gets the name.
+   * Gets the connectionNeedsAttention.
    *
-   * A human readable name for the transit gateway.
+   * Indicates if this Transit Gateway has a connection that needs attention (Such as cross account approval).
    *
-   * @return the name
+   * @return the connectionNeedsAttention
    */
-  public String getName() {
-    return name;
+  public Boolean isConnectionNeedsAttention() {
+    return connectionNeedsAttention;
   }
 
   /**
-   * Gets the location.
+   * Gets the createdAt.
    *
-   * Location of Transit Gateway Services.
+   * The date and time that this gateway was created.
    *
-   * @return the location
+   * @return the createdAt
    */
-  public String getLocation() {
-    return location;
+  public Date getCreatedAt() {
+    return createdAt;
   }
 
   /**
-   * Gets the createdAt.
+   * Gets the crn.
    *
-   * The date and time that this gateway was created.
+   * Cloud Resource Name of a transit gateway.
    *
-   * @return the createdAt
+   * @return the crn
    */
-  public Date getCreatedAt() {
-    return createdAt;
+  public String getCrn() {
+    return crn;
   }
 
   /**
@@ -122,6 +128,39 @@ public Boolean isGlobal() {
     return global;
   }
 
+  /**
+   * Gets the id.
+   *
+   * A unique identifier for this transit gateway.
+   *
+   * @return the id
+   */
+  public String getId() {
+    return id;
+  }
+
+  /**
+   * Gets the location.
+   *
+   * Location of Transit Gateway Services.
+   *
+   * @return the location
+   */
+  public String getLocation() {
+    return location;
+  }
+
+  /**
+   * Gets the name.
+   *
+   * A human readable name for the transit gateway.
+   *
+   * @return the name
+   */
+  public String getName() {
+    return name;
+  }
+
   /**
    * Gets the resourceGroup.
    *
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollection.java
index a4845fb1f..83a064324 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollection.java
index c6b63e608..0c5864a17 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollection.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollection.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCust.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCust.java
index 9fce81dfa..b16d77cc2 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCust.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCust.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -24,7 +24,10 @@
 public class TransitGatewayConnectionCust extends GenericModel {
 
   /**
-   * The type of network the GRE tunnel is targeting.
+   * The type of network the Unbound GRE tunnel is targeting. This field is required for network type
+   * `unbound_gre_tunnel` and must be set to `classic`.  For a `redundant_gre` network type, the value is required and
+   * can be either VPC or Classic. This field is required to be unspecified for network type `classic`, `vmware`,
+   * `directlink`, `vpc`, `power_virtual_server`, `vpn_gateway` and `gre_tunnel` connections.
    */
   public interface BaseNetworkType {
     /** classic. */
@@ -34,8 +37,7 @@ public interface BaseNetworkType {
   }
 
   /**
-   * Defines what type of network is connected via this connection. The list of enumerated values for this property may
-   * expand in the future. Code and processes using this field must tolerate unexpected values.
+   * Defines what type of network is connected via this connection.
    */
   public interface NetworkType {
     /** classic. */
@@ -52,11 +54,15 @@ public interface NetworkType {
     String POWER_VIRTUAL_SERVER = "power_virtual_server";
     /** redundant_gre. */
     String REDUNDANT_GRE = "redundant_gre";
+    /** vmware. */
+    String VMWARE = "vmware";
+    /** vpn_gateway. */
+    String VPN_GATEWAY = "vpn_gateway";
   }
 
   /**
    * Default setting of permit or deny which applies to any routes that don't match a specified filter. This field does
-   * not apply to the 'redundant_gre' network type.
+   * not apply to the `redundant_gre` network type.
    */
   public interface PrefixFiltersDefault {
     /** permit. */
@@ -108,18 +114,14 @@ public interface Status {
     String SUSPENDED = "suspended";
   }
 
-  @SerializedName("base_network_type")
-  protected String baseNetworkType;
-  protected String name;
-  @SerializedName("network_id")
-  protected String networkId;
-  @SerializedName("network_type")
-  protected String networkType;
-  protected String id;
   @SerializedName("base_connection_id")
   protected String baseConnectionId;
+  @SerializedName("base_network_type")
+  protected String baseNetworkType;
+  protected String cidr;
   @SerializedName("created_at")
   protected Date createdAt;
+  protected String id;
   @SerializedName("local_bgp_asn")
   protected Long localBgpAsn;
   @SerializedName("local_gateway_ip")
@@ -127,8 +129,13 @@ public interface Status {
   @SerializedName("local_tunnel_ip")
   protected String localTunnelIp;
   protected Long mtu;
+  protected String name;
   @SerializedName("network_account_id")
   protected String networkAccountId;
+  @SerializedName("network_id")
+  protected String networkId;
+  @SerializedName("network_type")
+  protected String networkType;
   @SerializedName("prefix_filters")
   protected List<TransitGatewayConnectionPrefixFilterReference> prefixFilters;
   @SerializedName("prefix_filters_default")
@@ -142,64 +149,69 @@ public interface Status {
   @SerializedName("request_status")
   protected String requestStatus;
   protected String status;
-  protected List<TransitGatewayRedundantGRETunnelReference> tunnels;
+  protected List<TransitGatewayTunnel> tunnels;
   @SerializedName("updated_at")
   protected Date updatedAt;
-  protected GreTunnelZoneReference zone;
+  protected ZoneReference zone;
 
   protected TransitGatewayConnectionCust() { }
 
   /**
-   * Gets the baseNetworkType.
+   * Gets the baseConnectionId.
    *
-   * The type of network the GRE tunnel is targeting.
+   * network_type `gre_tunnel` connections use `base_connection_id` to specify the ID of a network_type `classic`
+   * connection the tunnel is configured over. The specified connection must reside in the same transit gateway and be
+   * in an active state. The `classic` connection cannot be deleted until any `gre_tunnel` connections using it are
+   * deleted. This field only applies to and is required for network type `gre_tunnel` connections.
    *
-   * @return the baseNetworkType
+   * @return the baseConnectionId
+   * @deprecated this method is deprecated and may be removed in a future release
    */
-  public String getBaseNetworkType() {
-    return baseNetworkType;
+  @Deprecated
+  public String getBaseConnectionId() {
+    return baseConnectionId;
   }
 
   /**
-   * Gets the name.
+   * Gets the baseNetworkType.
    *
-   * The user-defined name for this transit gateway connection.
+   * The type of network the Unbound GRE tunnel is targeting. This field is required for network type
+   * `unbound_gre_tunnel` and must be set to `classic`.  For a `redundant_gre` network type, the value is required and
+   * can be either VPC or Classic. This field is required to be unspecified for network type `classic`, `vmware`,
+   * `directlink`, `vpc`, `power_virtual_server`, `vpn_gateway` and `gre_tunnel` connections.
    *
-   * @return the name
+   * @return the baseNetworkType
    */
-  public String getName() {
-    return name;
+  public String getBaseNetworkType() {
+    return baseNetworkType;
   }
 
   /**
-   * Gets the networkId.
+   * Gets the cidr.
    *
-   * The ID of the network being connected via this connection. This field is required for some types, such as 'vpc',
-   * 'power_virtual_server', 'directlink' and 'redundant_gre'. For network types 'vpc', 'redundant_gre',
-   * 'power_virtual_server' and 'directlink' this is the CRN of the VPC  / PowerVS / Direct Link gateway respectively.
+   * network_type 'vpn_gateway' connections use 'cidr' to specify the CIDR to use for the VPN GRE tunnels.
    *
-   * @return the networkId
+   * @return the cidr
    */
-  public String getNetworkId() {
-    return networkId;
+  public String getCidr() {
+    return cidr;
   }
 
   /**
-   * Gets the networkType.
+   * Gets the createdAt.
    *
-   * Defines what type of network is connected via this connection. The list of enumerated values for this property may
-   * expand in the future. Code and processes using this field must tolerate unexpected values.
+   * The date and time that this connection was created.
    *
-   * @return the networkType
+   * @return the createdAt
    */
-  public String getNetworkType() {
-    return networkType;
+  public Date getCreatedAt() {
+    return createdAt;
   }
 
   /**
    * Gets the id.
    *
-   * The unique identifier for this Transit Gateway Connection.
+   * The unique identifier for this Transit Gateway connection.
    *
    * @return the id
    */
@@ -207,37 +219,10 @@ public String getId() {
     return id;
   }
 
-  /**
-   * Gets the baseConnectionId.
-   *
-   * network_type 'gre_tunnel' connections use 'base_connection_id' to specify the ID of a network_type 'classic'
-   * connection the tunnel is configured over. The specified connection must reside in the same transit gateway and be
-   * in an active state. The 'classic' connection cannot be deleted until any 'gre_tunnel' connections using it are
-   * deleted. This field only applies to and is required for network type 'gre_tunnel' connections.
-   *
-   * @return the baseConnectionId
-   * @deprecated this method is deprecated and may be removed in a future release
-   */
-  @Deprecated
-  public String getBaseConnectionId() {
-    return baseConnectionId;
-  }
-
-  /**
-   * Gets the createdAt.
-   *
-   * The date and time that this connection was created.
-   *
-   * @return the createdAt
-   */
-  public Date getCreatedAt() {
-    return createdAt;
-  }
-
   /**
    * Gets the localBgpAsn.
    *
-   * Local network BGP ASN.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * Local network BGP ASN.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
    * @return the localBgpAsn
    */
@@ -248,7 +233,7 @@ public Long getLocalBgpAsn() {
   /**
    * Gets the localGatewayIp.
    *
-   * Local gateway IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Local gateway IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the localGatewayIp
@@ -260,7 +245,7 @@ public String getLocalGatewayIp() {
   /**
    * Gets the localTunnelIp.
    *
-   * Local tunnel IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Local tunnel IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the localTunnelIp
@@ -272,7 +257,7 @@ public String getLocalTunnelIp() {
   /**
    * Gets the mtu.
    *
-   * GRE tunnel MTU.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * GRE tunnel MTU.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
    * @return the mtu
    */
@@ -280,6 +265,23 @@ public Long getMtu() {
     return mtu;
   }
 
+  /**
+   * Gets the name.
+   *
+   * The user-defined name for this transit gateway connection. Network type `vpc`  connections are defaulted to the
+   * name of the VPC.  Network type `classic` connections are named `classic`.
+   *
+   * This field is required for network type `power_virtual_server`, `directlink`, `vmware`, `gre_tunnel`,
+   * `unbound_gre_tunnel`, `vpn_gateway` and `redundant_gre` connections.
+   *
+   * This field is optional for network type `classic`, `vpc` connections.
+   *
+   * @return the name
+   */
+  public String getName() {
+    return name;
+  }
+
   /**
    * Gets the networkAccountId.
    *
@@ -292,12 +294,39 @@ public String getNetworkAccountId() {
     return networkAccountId;
   }
 
+  /**
+   * Gets the networkId.
+   *
+   * The ID of the network being connected via this connection. For network types `vpc`,`power_virtual_server`,
+   * `vmware`, `directlink` and `vpn_gateway` this is the CRN of the VPC / PowerVS / VDC / Direct Link / VPN gateway
+   * respectively. This field is required for network type `vpc`, `power_virtual_server`, `vmware`, `vpn_gateway`, and
+   * `directlink` connections.  It is also required for `redundant_gre` connections when the base_network_type is set to
+   * VPC. This field is required to be unspecified for network type `classic`, `gre_tunnel` and `unbound_gre_tunnel`
+   * connections.
+   *
+   * @return the networkId
+   */
+  public String getNetworkId() {
+    return networkId;
+  }
+
+  /**
+   * Gets the networkType.
+   *
+   * Defines what type of network is connected via this connection.
+   *
+   * @return the networkType
+   */
+  public String getNetworkType() {
+    return networkType;
+  }
+
   /**
    * Gets the prefixFilters.
    *
    * Array of prefix route filters for a transit gateway connection. This is order dependent with those first in the
    * array being applied first, and those at the end of the array is applied last, or just before the default. This
-   * field does not apply to the 'redundant_gre' network type.
+   * field does not apply to the `redundant_gre` network type.
    *
    * @return the prefixFilters
    */
@@ -309,7 +338,7 @@ public List<TransitGatewayConnectionPrefixFilterReference> getPrefixFilters() {
    * Gets the prefixFiltersDefault.
    *
    * Default setting of permit or deny which applies to any routes that don't match a specified filter. This field does
-   * not apply to the 'redundant_gre' network type.
+   * not apply to the `redundant_gre` network type.
    *
    * @return the prefixFiltersDefault
    */
@@ -320,7 +349,7 @@ public String getPrefixFiltersDefault() {
   /**
    * Gets the remoteBgpAsn.
    *
-   * Remote network BGP ASN.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel' connections.
+   * Remote network BGP ASN.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel` connections.
    *
    * @return the remoteBgpAsn
    */
@@ -331,7 +360,7 @@ public Long getRemoteBgpAsn() {
   /**
    * Gets the remoteGatewayIp.
    *
-   * Remote gateway IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Remote gateway IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the remoteGatewayIp
@@ -343,7 +372,7 @@ public String getRemoteGatewayIp() {
   /**
    * Gets the remoteTunnelIp.
    *
-   * Remote tunnel IP address.  This field only applies to network type 'gre_tunnel' and 'unbound_gre_tunnel'
+   * Remote tunnel IP address.  This field only applies to network type `gre_tunnel` and `unbound_gre_tunnel`
    * connections.
    *
    * @return the remoteTunnelIp
@@ -380,11 +409,11 @@ public String getStatus() {
   /**
    * Gets the tunnels.
    *
-   * Collection of all tunnels for 'redundant_gre' connection.
+   * Collection of all tunnels for `redundant_gre` connection.
    *
    * @return the tunnels
    */
-  public List<TransitGatewayRedundantGRETunnelReference> getTunnels() {
+  public List<TransitGatewayTunnel> getTunnels() {
     return tunnels;
   }
 
@@ -402,11 +431,11 @@ public Date getUpdatedAt() {
   /**
    * Gets the zone.
    *
-   * Location of GRE tunnel.  This field only applies to network type 'gre_tunnel' connections.
+   * Location of GRE tunnel. This field only applies to network type `gre_tunnel` connections.
    *
    * @return the zone
    */
-  public GreTunnelZoneReference getZone() {
+  public ZoneReference getZone() {
     return zone;
   }
 }
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilter.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilter.java
index a246985f3..b982a5cfb 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilter.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilter.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReference.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReference.java
index 6cc2f1675..40ad3144a 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReference.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReference.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionsPager.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionsPager.java
index 74ffcb77c..b0c931b52 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionsPager.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionsPager.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReference.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReference.java
index 212847024..dc2db214b 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReference.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReference.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnel.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnel.java
new file mode 100644
index 000000000..dd4ddc8b7
--- /dev/null
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnel.java
@@ -0,0 +1,270 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import java.util.Date;
+
+import com.google.gson.annotations.SerializedName;
+import com.ibm.cloud.sdk.core.service.model.GenericModel;
+
+/**
+ * Details for a redundant GRE tunnel.
+ */
+public class TransitGatewayTunnel extends GenericModel {
+
+  /**
+   * The type of network the redundant GRE tunnel is targeting.
+   */
+  public interface BaseNetworkType {
+    /** classic. */
+    String CLASSIC = "classic";
+    /** vpc. */
+    String VPC = "vpc";
+  }
+
+  /**
+   * Tunnel's current configuration state. The list of enumerated values for this property may expand in the future.
+   * Code and processes using this field must tolerate unexpected values.
+   */
+  public interface Status {
+    /** attached. */
+    String ATTACHED = "attached";
+    /** failed. */
+    String FAILED = "failed";
+    /** pending. */
+    String PENDING = "pending";
+    /** deleting. */
+    String DELETING = "deleting";
+    /** detaching. */
+    String DETACHING = "detaching";
+    /** detached. */
+    String DETACHED = "detached";
+    /** suspending. */
+    String SUSPENDING = "suspending";
+    /** suspended. */
+    String SUSPENDED = "suspended";
+  }
+
+  @SerializedName("base_network_type")
+  protected String baseNetworkType;
+  @SerializedName("created_at")
+  protected Date createdAt;
+  protected String id;
+  @SerializedName("local_bgp_asn")
+  protected Long localBgpAsn;
+  @SerializedName("local_gateway_ip")
+  protected String localGatewayIp;
+  @SerializedName("local_tunnel_ip")
+  protected String localTunnelIp;
+  protected Long mtu;
+  protected String name;
+  @SerializedName("network_account_id")
+  protected String networkAccountId;
+  @SerializedName("network_id")
+  protected String networkId;
+  @SerializedName("remote_bgp_asn")
+  protected Long remoteBgpAsn;
+  @SerializedName("remote_gateway_ip")
+  protected String remoteGatewayIp;
+  @SerializedName("remote_tunnel_ip")
+  protected String remoteTunnelIp;
+  protected String status;
+  @SerializedName("updated_at")
+  protected Date updatedAt;
+  protected ZoneReference zone;
+
+  protected TransitGatewayTunnel() { }
+
+  /**
+   * Gets the baseNetworkType.
+   *
+   * The type of network the redundant GRE tunnel is targeting.
+   *
+   * @return the baseNetworkType
+   */
+  public String getBaseNetworkType() {
+    return baseNetworkType;
+  }
+
+  /**
+   * Gets the createdAt.
+   *
+   * The date and time that this GRE tunnel was created.
+   *
+   * @return the createdAt
+   */
+  public Date getCreatedAt() {
+    return createdAt;
+  }
+
+  /**
+   * Gets the id.
+   *
+   * The unique identifier for this redundant GRE tunnel.
+   *
+   * @return the id
+   */
+  public String getId() {
+    return id;
+  }
+
+  /**
+   * Gets the localBgpAsn.
+   *
+   * Local network BGP ASN.  It is assigned by IBM when the tunnel is created.
+   *
+   * @return the localBgpAsn
+   */
+  public Long getLocalBgpAsn() {
+    return localBgpAsn;
+  }
+
+  /**
+   * Gets the localGatewayIp.
+   *
+   * Local gateway IP address.
+   *
+   * @return the localGatewayIp
+   */
+  public String getLocalGatewayIp() {
+    return localGatewayIp;
+  }
+
+  /**
+   * Gets the localTunnelIp.
+   *
+   * Local tunnel IP address. The local_tunnel_ip and remote_tunnel_ip addresses must be in the same /30 network.
+   * Neither can be the network nor broadcast addresses.
+   *
+   * @return the localTunnelIp
+   */
+  public String getLocalTunnelIp() {
+    return localTunnelIp;
+  }
+
+  /**
+   * Gets the mtu.
+   *
+   * GRE tunnel MTU.
+   *
+   * @return the mtu
+   */
+  public Long getMtu() {
+    return mtu;
+  }
+
+  /**
+   * Gets the name.
+   *
+   * The user-defined name for this tunnel.
+   *
+   * @return the name
+   */
+  public String getName() {
+    return name;
+  }
+
+  /**
+   * Gets the networkAccountId.
+   *
+   * The ID of the account for cross account Classic connections.  This field is required when the GRE tunnel is in a
+   * different account than the gateway and the base network is Classic.
+   *
+   * @return the networkAccountId
+   */
+  public String getNetworkAccountId() {
+    return networkAccountId;
+  }
+
+  /**
+   * Gets the networkId.
+   *
+   * The ID of the network VPC being connected via this connection.
+   *
+   * @return the networkId
+   */
+  public String getNetworkId() {
+    return networkId;
+  }
+
+  /**
+   * Gets the remoteBgpAsn.
+   *
+   * Remote network BGP ASN. The following ASN values are reserved and unavailable 0, 13884, 36351, 64512-64513, 65100,
+   * 65200-65234, 65402-65433, 65500 and 4201065000-4201065999. If `remote_bgp_asn` is omitted on create requests, IBM
+   * will assign an ASN.
+   *
+   * @return the remoteBgpAsn
+   */
+  public Long getRemoteBgpAsn() {
+    return remoteBgpAsn;
+  }
+
+  /**
+   * Gets the remoteGatewayIp.
+   *
+   * Remote gateway IP address.
+   *
+   * @return the remoteGatewayIp
+   */
+  public String getRemoteGatewayIp() {
+    return remoteGatewayIp;
+  }
+
+  /**
+   * Gets the remoteTunnelIp.
+   *
+   * Remote tunnel IP address. The local_tunnel_ip and remote_tunnel_ip addresses must be in the same /30 network.
+   * Neither can be the network nor broadcast addresses.
+   *
+   * @return the remoteTunnelIp
+   */
+  public String getRemoteTunnelIp() {
+    return remoteTunnelIp;
+  }
+
+  /**
+   * Gets the status.
+   *
+   * Tunnel's current configuration state. The list of enumerated values for this property may expand in the future.
+   * Code and processes using this field must tolerate unexpected values.
+   *
+   * @return the status
+   */
+  public String getStatus() {
+    return status;
+  }
+
+  /**
+   * Gets the updatedAt.
+   *
+   * The date and time that this tunnel was last updated.
+   *
+   * @return the updatedAt
+   */
+  public Date getUpdatedAt() {
+    return updatedAt;
+  }
+
+  /**
+   * Gets the zone.
+   *
+   * Availability zone reference.
+   *
+   * @return the zone
+   */
+  public ZoneReference getZone() {
+    return zone;
+  }
+}
+
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelCollection.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelCollection.java
new file mode 100644
index 000000000..5aa5b6ba1
--- /dev/null
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelCollection.java
@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import java.util.List;
+
+import com.ibm.cloud.sdk.core.service.model.GenericModel;
+
+/**
+ * Collection of all tunnels for redundant gre connection.
+ */
+public class TransitGatewayTunnelCollection extends GenericModel {
+
+  protected List<TransitGatewayTunnel> tunnels;
+
+  protected TransitGatewayTunnelCollection() { }
+
+  /**
+   * Gets the tunnels.
+   *
+   * Collection of all tunnels for redundant gre connection.
+   *
+   * @return the tunnels
+   */
+  public List<TransitGatewayTunnel> getTunnels() {
+    return tunnels;
+  }
+}
+
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelPatch.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelPatch.java
new file mode 100644
index 000000000..9cf288098
--- /dev/null
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelPatch.java
@@ -0,0 +1,108 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import java.util.Map;
+
+import com.ibm.cloud.sdk.core.service.model.GenericModel;
+import com.ibm.cloud.sdk.core.util.GsonSingleton;
+
+/**
+ * An update template for a Transit Gateway connection tunnel.
+ */
+public class TransitGatewayTunnelPatch extends GenericModel {
+
+  protected String name;
+
+  /**
+   * Builder.
+   */
+  public static class Builder {
+    private String name;
+
+    /**
+     * Instantiates a new Builder from an existing TransitGatewayTunnelPatch instance.
+     *
+     * @param transitGatewayTunnelPatch the instance to initialize the Builder with
+     */
+    private Builder(TransitGatewayTunnelPatch transitGatewayTunnelPatch) {
+      this.name = transitGatewayTunnelPatch.name;
+    }
+
+    /**
+     * Instantiates a new builder.
+     */
+    public Builder() {
+    }
+
+    /**
+     * Builds a TransitGatewayTunnelPatch.
+     *
+     * @return the new TransitGatewayTunnelPatch instance
+     */
+    public TransitGatewayTunnelPatch build() {
+      return new TransitGatewayTunnelPatch(this);
+    }
+
+    /**
+     * Set the name.
+     *
+     * @param name the name
+     * @return the TransitGatewayTunnelPatch builder
+     */
+    public Builder name(String name) {
+      this.name = name;
+      return this;
+    }
+  }
+
+  protected TransitGatewayTunnelPatch() { }
+
+  protected TransitGatewayTunnelPatch(Builder builder) {
+    name = builder.name;
+  }
+
+  /**
+   * New builder.
+   *
+   * @return a TransitGatewayTunnelPatch builder
+   */
+  public Builder newBuilder() {
+    return new Builder(this);
+  }
+
+  /**
+   * Gets the name.
+   *
+   * The user-defined name for this connection tunnel.
+   *
+   * @return the name
+   */
+  public String name() {
+    return name;
+  }
+
+  /**
+   * Construct a JSON merge-patch from the TransitGatewayTunnelPatch.
+   *
+   * Note that properties of the TransitGatewayTunnelPatch with null values are not represented in the constructed
+   * JSON merge-patch object, but can be explicitly set afterward to signify a property delete.
+   *
+   * @return a JSON merge-patch for the TransitGatewayTunnelPatch
+   */
+  public Map<String, Object> asPatch() {
+    return GsonSingleton.getGson().fromJson(this.toString(), Map.class);
+  }
+
+}
+
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTemplate.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTemplate.java
new file mode 100644
index 000000000..a9fed119f
--- /dev/null
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTemplate.java
@@ -0,0 +1,290 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.google.gson.annotations.SerializedName;
+import com.ibm.cloud.sdk.core.service.model.GenericModel;
+
+/**
+ * A create template with information for redundant GRE tunnel.
+ */
+public class TransitGatewayTunnelTemplate extends GenericModel {
+
+  @SerializedName("local_gateway_ip")
+  protected String localGatewayIp;
+  @SerializedName("local_tunnel_ip")
+  protected String localTunnelIp;
+  protected String name;
+  @SerializedName("remote_bgp_asn")
+  protected Long remoteBgpAsn;
+  @SerializedName("remote_gateway_ip")
+  protected String remoteGatewayIp;
+  @SerializedName("remote_tunnel_ip")
+  protected String remoteTunnelIp;
+  protected ZoneIdentity zone;
+
+  /**
+   * Builder.
+   */
+  public static class Builder {
+    private String localGatewayIp;
+    private String localTunnelIp;
+    private String name;
+    private Long remoteBgpAsn;
+    private String remoteGatewayIp;
+    private String remoteTunnelIp;
+    private ZoneIdentity zone;
+
+    /**
+     * Instantiates a new Builder from an existing TransitGatewayTunnelTemplate instance.
+     *
+     * @param transitGatewayTunnelTemplate the instance to initialize the Builder with
+     */
+    private Builder(TransitGatewayTunnelTemplate transitGatewayTunnelTemplate) {
+      this.localGatewayIp = transitGatewayTunnelTemplate.localGatewayIp;
+      this.localTunnelIp = transitGatewayTunnelTemplate.localTunnelIp;
+      this.name = transitGatewayTunnelTemplate.name;
+      this.remoteBgpAsn = transitGatewayTunnelTemplate.remoteBgpAsn;
+      this.remoteGatewayIp = transitGatewayTunnelTemplate.remoteGatewayIp;
+      this.remoteTunnelIp = transitGatewayTunnelTemplate.remoteTunnelIp;
+      this.zone = transitGatewayTunnelTemplate.zone;
+    }
+
+    /**
+     * Instantiates a new builder.
+     */
+    public Builder() {
+    }
+
+    /**
+     * Instantiates a new builder with required properties.
+     *
+     * @param localGatewayIp the localGatewayIp
+     * @param localTunnelIp the localTunnelIp
+     * @param name the name
+     * @param remoteGatewayIp the remoteGatewayIp
+     * @param remoteTunnelIp the remoteTunnelIp
+     * @param zone the zone
+     */
+    public Builder(String localGatewayIp, String localTunnelIp, String name, String remoteGatewayIp, String remoteTunnelIp, ZoneIdentity zone) {
+      this.localGatewayIp = localGatewayIp;
+      this.localTunnelIp = localTunnelIp;
+      this.name = name;
+      this.remoteGatewayIp = remoteGatewayIp;
+      this.remoteTunnelIp = remoteTunnelIp;
+      this.zone = zone;
+    }
+
+    /**
+     * Builds a TransitGatewayTunnelTemplate.
+     *
+     * @return the new TransitGatewayTunnelTemplate instance
+     */
+    public TransitGatewayTunnelTemplate build() {
+      return new TransitGatewayTunnelTemplate(this);
+    }
+
+    /**
+     * Set the localGatewayIp.
+     *
+     * @param localGatewayIp the localGatewayIp
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder localGatewayIp(String localGatewayIp) {
+      this.localGatewayIp = localGatewayIp;
+      return this;
+    }
+
+    /**
+     * Set the localTunnelIp.
+     *
+     * @param localTunnelIp the localTunnelIp
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder localTunnelIp(String localTunnelIp) {
+      this.localTunnelIp = localTunnelIp;
+      return this;
+    }
+
+    /**
+     * Set the name.
+     *
+     * @param name the name
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder name(String name) {
+      this.name = name;
+      return this;
+    }
+
+    /**
+     * Set the remoteBgpAsn.
+     *
+     * @param remoteBgpAsn the remoteBgpAsn
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder remoteBgpAsn(long remoteBgpAsn) {
+      this.remoteBgpAsn = remoteBgpAsn;
+      return this;
+    }
+
+    /**
+     * Set the remoteGatewayIp.
+     *
+     * @param remoteGatewayIp the remoteGatewayIp
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder remoteGatewayIp(String remoteGatewayIp) {
+      this.remoteGatewayIp = remoteGatewayIp;
+      return this;
+    }
+
+    /**
+     * Set the remoteTunnelIp.
+     *
+     * @param remoteTunnelIp the remoteTunnelIp
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder remoteTunnelIp(String remoteTunnelIp) {
+      this.remoteTunnelIp = remoteTunnelIp;
+      return this;
+    }
+
+    /**
+     * Set the zone.
+     *
+     * @param zone the zone
+     * @return the TransitGatewayTunnelTemplate builder
+     */
+    public Builder zone(ZoneIdentity zone) {
+      this.zone = zone;
+      return this;
+    }
+  }
+
+  protected TransitGatewayTunnelTemplate() { }
+
+  protected TransitGatewayTunnelTemplate(Builder builder) {
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.localGatewayIp,
+      "localGatewayIp cannot be null");
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.localTunnelIp,
+      "localTunnelIp cannot be null");
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.name,
+      "name cannot be null");
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.remoteGatewayIp,
+      "remoteGatewayIp cannot be null");
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.remoteTunnelIp,
+      "remoteTunnelIp cannot be null");
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.zone,
+      "zone cannot be null");
+    localGatewayIp = builder.localGatewayIp;
+    localTunnelIp = builder.localTunnelIp;
+    name = builder.name;
+    remoteBgpAsn = builder.remoteBgpAsn;
+    remoteGatewayIp = builder.remoteGatewayIp;
+    remoteTunnelIp = builder.remoteTunnelIp;
+    zone = builder.zone;
+  }
+
+  /**
+   * New builder.
+   *
+   * @return a TransitGatewayTunnelTemplate builder
+   */
+  public Builder newBuilder() {
+    return new Builder(this);
+  }
+
+  /**
+   * Gets the localGatewayIp.
+   *
+   * Local gateway IP address.
+   *
+   * @return the localGatewayIp
+   */
+  public String localGatewayIp() {
+    return localGatewayIp;
+  }
+
+  /**
+   * Gets the localTunnelIp.
+   *
+   * Local tunnel IP address. The local_tunnel_ip and remote_tunnel_ip addresses must be in the same /30 network.
+   * Neither can be the network nor broadcast addresses.
+   *
+   * @return the localTunnelIp
+   */
+  public String localTunnelIp() {
+    return localTunnelIp;
+  }
+
+  /**
+   * Gets the name.
+   *
+   * The user-defined name for this tunnel connection.
+   *
+   * @return the name
+   */
+  public String name() {
+    return name;
+  }
+
+  /**
+   * Gets the remoteBgpAsn.
+   *
+   * Remote network BGP ASN. The following ASN values are reserved and unavailable 0, 13884, 36351, 64512-64513, 65100,
+   * 65200-65234, 65402-65433, 65500 and 4201065000-4201065999. If `remote_bgp_asn` is omitted on create requests, IBM
+   * will assign an ASN.
+   *
+   * @return the remoteBgpAsn
+   */
+  public Long remoteBgpAsn() {
+    return remoteBgpAsn;
+  }
+
+  /**
+   * Gets the remoteGatewayIp.
+   *
+   * Remote gateway IP address.
+   *
+   * @return the remoteGatewayIp
+   */
+  public String remoteGatewayIp() {
+    return remoteGatewayIp;
+  }
+
+  /**
+   * Gets the remoteTunnelIp.
+   *
+   * Remote tunnel IP address. The local_tunnel_ip and remote_tunnel_ip addresses must be in the same /30 network.
+   * Neither can be the network nor broadcast addresses.
+   *
+   * @return the remoteTunnelIp
+   */
+  public String remoteTunnelIp() {
+    return remoteTunnelIp;
+  }
+
+  /**
+   * Gets the zone.
+   *
+   * Specify the connection's location.  The specified availability zone must reside in the gateway's region.
+   * Use the IBM Cloud global catalog to list zones within the desired region.
+   *
+   * @return the zone
+   */
+  public ZoneIdentity zone() {
+    return zone;
+  }
+}
+
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewaysPager.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewaysPager.java
index 7ffd58342..76fcfee2c 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewaysPager.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewaysPager.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptions.java
index 6f0fff984..4ab29275f 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -174,8 +174,8 @@ public String id() {
    * Gets the name.
    *
    * The user-defined name for this transit gateway. If specified as empty string or nil,  the name will be the network
-   * name (the name of the VPC in the case of network type 'vpc',  and the word Classic, in the case of network type
-   * 'classic').
+   * name (the name of the VPC in the case of network type `vpc`,  and the word Classic, in the case of network type
+   * `classic`).
    *
    * @return the name
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptions.java
index e6e6f77da..2ae419953 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -276,12 +276,12 @@ public String before() {
    * Gets the ge.
    *
    * Defines the minimum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length greater or equal to this value.
+   * within the `prefix` that have a prefix length greater or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'ge' route matching
-   * behavior. If the 'le' value is non-zero the the 'ge' value must between the prefix length and the
-   * 'le' value, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `ge` route matching
+   * behavior. If the `le` value is non-zero the the `ge` value must between the prefix length and the
+   * `le` value, inclusive.
    *
    * @return the ge
    */
@@ -293,11 +293,11 @@ public Long ge() {
    * Gets the le.
    *
    * Defines the maximum matched prefix precision. If this field is non-zero then the filter will match all routes
-   * within the 'prefix' that have a prefix length less than or equal to this value.
+   * within the `prefix` that have a prefix length less than or equal to this value.
    *
    * This value can be zero, or a non-negative number greater than or equal to the prefix length of the filter's prefix
-   * or less then or equal to 32. If this value is set to zero, the filter will not use the 'le' route matching
-   * behavior. If the 'ge' value is non-zero the the 'le' value must between the 'ge' value and 32, inclusive.
+   * or less then or equal to 32. If this value is set to zero, the filter will not use the `le` route matching
+   * behavior. If the `ge` value is non-zero the the `le` value must between the `ge` value and 32, inclusive.
    *
    * @return the le
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptions.java
index 893a5b471..13491e730 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -12,6 +12,8 @@
  */
 package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
 
+import java.util.Map;
+
 import com.ibm.cloud.sdk.core.service.model.GenericModel;
 
 /**
@@ -22,7 +24,7 @@ public class UpdateTransitGatewayConnectionTunnelsOptions extends GenericModel {
   protected String transitGatewayId;
   protected String id;
   protected String greTunnelId;
-  protected String name;
+  protected Map<String, Object> transitGatewayTunnelPatch;
 
   /**
    * Builder.
@@ -31,7 +33,7 @@ public static class Builder {
     private String transitGatewayId;
     private String id;
     private String greTunnelId;
-    private String name;
+    private Map<String, Object> transitGatewayTunnelPatch;
 
     /**
      * Instantiates a new Builder from an existing UpdateTransitGatewayConnectionTunnelsOptions instance.
@@ -42,7 +44,7 @@ private Builder(UpdateTransitGatewayConnectionTunnelsOptions updateTransitGatewa
       this.transitGatewayId = updateTransitGatewayConnectionTunnelsOptions.transitGatewayId;
       this.id = updateTransitGatewayConnectionTunnelsOptions.id;
       this.greTunnelId = updateTransitGatewayConnectionTunnelsOptions.greTunnelId;
-      this.name = updateTransitGatewayConnectionTunnelsOptions.name;
+      this.transitGatewayTunnelPatch = updateTransitGatewayConnectionTunnelsOptions.transitGatewayTunnelPatch;
     }
 
     /**
@@ -57,11 +59,13 @@ public Builder() {
      * @param transitGatewayId the transitGatewayId
      * @param id the id
      * @param greTunnelId the greTunnelId
+     * @param transitGatewayTunnelPatch the transitGatewayTunnelPatch
      */
-    public Builder(String transitGatewayId, String id, String greTunnelId) {
+    public Builder(String transitGatewayId, String id, String greTunnelId, Map<String, Object> transitGatewayTunnelPatch) {
       this.transitGatewayId = transitGatewayId;
       this.id = id;
       this.greTunnelId = greTunnelId;
+      this.transitGatewayTunnelPatch = transitGatewayTunnelPatch;
     }
 
     /**
@@ -107,13 +111,13 @@ public Builder greTunnelId(String greTunnelId) {
     }
 
     /**
-     * Set the name.
+     * Set the transitGatewayTunnelPatch.
      *
-     * @param name the name
+     * @param transitGatewayTunnelPatch the transitGatewayTunnelPatch
      * @return the UpdateTransitGatewayConnectionTunnelsOptions builder
      */
-    public Builder name(String name) {
-      this.name = name;
+    public Builder transitGatewayTunnelPatch(Map<String, Object> transitGatewayTunnelPatch) {
+      this.transitGatewayTunnelPatch = transitGatewayTunnelPatch;
       return this;
     }
   }
@@ -127,10 +131,12 @@ protected UpdateTransitGatewayConnectionTunnelsOptions(Builder builder) {
       "id cannot be empty");
     com.ibm.cloud.sdk.core.util.Validator.notEmpty(builder.greTunnelId,
       "greTunnelId cannot be empty");
+    com.ibm.cloud.sdk.core.util.Validator.notNull(builder.transitGatewayTunnelPatch,
+      "transitGatewayTunnelPatch cannot be null");
     transitGatewayId = builder.transitGatewayId;
     id = builder.id;
     greTunnelId = builder.greTunnelId;
-    name = builder.name;
+    transitGatewayTunnelPatch = builder.transitGatewayTunnelPatch;
   }
 
   /**
@@ -176,14 +182,14 @@ public String greTunnelId() {
   }
 
   /**
-   * Gets the name.
+   * Gets the transitGatewayTunnelPatch.
    *
-   * The user-defined name for this connection tunnel.
+   * The update connection tunnel template.
    *
-   * @return the name
+   * @return the transitGatewayTunnelPatch
    */
-  public String name() {
-    return name;
+  public Map<String, Object> transitGatewayTunnelPatch() {
+    return transitGatewayTunnelPatch;
   }
 }
 
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptions.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptions.java
index 95883cf07..ee5d8b825 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptions.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptions.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -20,6 +20,7 @@
 public class UpdateTransitGatewayOptions extends GenericModel {
 
   protected String id;
+  protected Boolean allowGreTrafficAcrossZones;
   protected Boolean global;
   protected String name;
 
@@ -28,6 +29,7 @@ public class UpdateTransitGatewayOptions extends GenericModel {
    */
   public static class Builder {
     private String id;
+    private Boolean allowGreTrafficAcrossZones;
     private Boolean global;
     private String name;
 
@@ -38,6 +40,7 @@ public static class Builder {
      */
     private Builder(UpdateTransitGatewayOptions updateTransitGatewayOptions) {
       this.id = updateTransitGatewayOptions.id;
+      this.allowGreTrafficAcrossZones = updateTransitGatewayOptions.allowGreTrafficAcrossZones;
       this.global = updateTransitGatewayOptions.global;
       this.name = updateTransitGatewayOptions.name;
     }
@@ -77,6 +80,17 @@ public Builder id(String id) {
       return this;
     }
 
+    /**
+     * Set the allowGreTrafficAcrossZones.
+     *
+     * @param allowGreTrafficAcrossZones the allowGreTrafficAcrossZones
+     * @return the UpdateTransitGatewayOptions builder
+     */
+    public Builder allowGreTrafficAcrossZones(Boolean allowGreTrafficAcrossZones) {
+      this.allowGreTrafficAcrossZones = allowGreTrafficAcrossZones;
+      return this;
+    }
+
     /**
      * Set the global.
      *
@@ -106,6 +120,7 @@ protected UpdateTransitGatewayOptions(Builder builder) {
     com.ibm.cloud.sdk.core.util.Validator.notEmpty(builder.id,
       "id cannot be empty");
     id = builder.id;
+    allowGreTrafficAcrossZones = builder.allowGreTrafficAcrossZones;
     global = builder.global;
     name = builder.name;
   }
@@ -130,6 +145,17 @@ public String id() {
     return id;
   }
 
+  /**
+   * Gets the allowGreTrafficAcrossZones.
+   *
+   * Allow GRE traffic in this gateway to flow across zones.
+   *
+   * @return the allowGreTrafficAcrossZones
+   */
+  public Boolean allowGreTrafficAcrossZones() {
+    return allowGreTrafficAcrossZones;
+  }
+
   /**
    * Gets the global.
    *
@@ -144,7 +170,7 @@ public Boolean global() {
   /**
    * Gets the name.
    *
-   * The user-defined name for this transit gateway.
+   * A human readable name for a resource.
    *
    * @return the name
    */
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentity.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentity.java
index f87c62b0c..692abdbbc 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentity.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentity.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByName.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByName.java
index 32c4bdad1..7f80ec135 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByName.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByName.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReference.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReference.java
index 5ee46d099..e055c392c 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReference.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReference.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/package-info.java b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/package-info.java
index 018b49aa3..d04f42cf0 100644
--- a/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/package-info.java
+++ b/modules/transit-gateway-apis/src/main/java/com/ibm/cloud/networking/transit_gateway_apis/v1/package-info.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApisTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApisTest.java
index 11ed962d4..298047603 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApisTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/TransitGatewayApisTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -29,14 +29,13 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayConnectionOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayConnectionPrefixFilterOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayConnectionTunnelsOptions;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayGreTunnelOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GetTransitGatewayRouteReportOptions;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListConnectionsOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListGatewayLocationsOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayConnectionPrefixFiltersOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayConnectionsOptions;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayGreTunnelOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayRouteReportsOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewaysOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PaginationFirstConnection;
@@ -48,12 +47,9 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PrefixFilterCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PrefixFilterCust;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PrefixFilterPut;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RedundantGRETunnelCollection;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RedundantGRETunnelReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ReplaceTransitGatewayConnectionPrefixFilterOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ResourceGroupIdentity;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ResourceGroupReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RgreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RouteReport;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RouteReportCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RouteReportConnection;
@@ -74,9 +70,11 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilter;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilterReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionsPager;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelTemplate;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelCollection;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelPatch;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelTemplate;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewaysPager;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.UpdateTransitGatewayConnectionOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.UpdateTransitGatewayConnectionPrefixFilterOptions;
@@ -85,7 +83,6 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneIdentity;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneIdentityByName;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReferenceCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.http.Response;
 import com.ibm.cloud.sdk.core.security.Authenticator;
@@ -137,7 +134,7 @@ public void testGetVersion() throws Throwable {
   @Test
   public void testListTransitGatewaysWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"first\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways?limit=50\"}, \"limit\": 50, \"next\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways?start=MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa&limit=50\", \"start\": \"MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa\"}, \"transit_gateways\": [{\"id\": \"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"location\": \"us-south\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"global\": true, \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}]}";
+    String mockResponseBody = "{\"first\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways?limit=50\"}, \"limit\": 50, \"next\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways?start=MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa&limit=50\", \"start\": \"MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa\"}, \"transit_gateways\": [{\"allow_gre_traffic_across_zones\": true, \"connection_count\": 5, \"connection_needs_attention\": true, \"created_at\": \"2019-01-01T12:00:00.000Z\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"global\": true, \"id\": \"0a06fb9b-820f-4c44-8a31-77f1f0806d28\", \"location\": \"us-south\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}]}";
     String listTransitGatewaysPath = "/transit_gateways";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -185,8 +182,8 @@ public void testListTransitGatewaysWRetries() throws Throwable {
   @Test
   public void testListTransitGatewaysWithPagerGetNext() throws Throwable {
     // Set up the two-page mock response.
-    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"transit_gateways\":[{\"id\":\"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"location\":\"us-south\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"global\":true,\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
-    String mockResponsePage2 = "{\"transit_gateways\":[{\"id\":\"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"location\":\"us-south\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"global\":true,\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
+    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"transit_gateways\":[{\"allow_gre_traffic_across_zones\":true,\"connection_count\":5,\"connection_needs_attention\":true,\"created_at\":\"2019-01-01T12:00:00.000Z\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"global\":true,\"id\":\"0a06fb9b-820f-4c44-8a31-77f1f0806d28\",\"location\":\"us-south\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
+    String mockResponsePage2 = "{\"transit_gateways\":[{\"allow_gre_traffic_across_zones\":true,\"connection_count\":5,\"connection_needs_attention\":true,\"created_at\":\"2019-01-01T12:00:00.000Z\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"global\":true,\"id\":\"0a06fb9b-820f-4c44-8a31-77f1f0806d28\",\"location\":\"us-south\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
@@ -218,8 +215,8 @@ public void testListTransitGatewaysWithPagerGetNext() throws Throwable {
   @Test
   public void testListTransitGatewaysWithPagerGetAll() throws Throwable {
     // Set up the two-page mock response.
-    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"transit_gateways\":[{\"id\":\"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"location\":\"us-south\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"global\":true,\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
-    String mockResponsePage2 = "{\"transit_gateways\":[{\"id\":\"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"location\":\"us-south\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"global\":true,\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
+    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"transit_gateways\":[{\"allow_gre_traffic_across_zones\":true,\"connection_count\":5,\"connection_needs_attention\":true,\"created_at\":\"2019-01-01T12:00:00.000Z\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"global\":true,\"id\":\"0a06fb9b-820f-4c44-8a31-77f1f0806d28\",\"location\":\"us-south\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
+    String mockResponsePage2 = "{\"transit_gateways\":[{\"allow_gre_traffic_across_zones\":true,\"connection_count\":5,\"connection_needs_attention\":true,\"created_at\":\"2019-01-01T12:00:00.000Z\",\"crn\":\"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\",\"global\":true,\"id\":\"0a06fb9b-820f-4c44-8a31-77f1f0806d28\",\"location\":\"us-south\",\"name\":\"my-transit-gateway-in-TransitGateway\",\"resource_group\":{\"href\":\"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\",\"id\":\"56969d6043e9465c883cb9f7363e78e8\"},\"status\":\"available\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"total_count\":2,\"limit\":1}";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
@@ -247,7 +244,7 @@ public void testListTransitGatewaysWithPagerGetAll() throws Throwable {
   @Test
   public void testCreateTransitGatewayWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"id\": \"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"location\": \"us-south\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"global\": true, \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}";
+    String mockResponseBody = "{\"allow_gre_traffic_across_zones\": true, \"connection_count\": 5, \"connection_needs_attention\": true, \"created_at\": \"2019-01-01T12:00:00.000Z\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"global\": true, \"id\": \"0a06fb9b-820f-4c44-8a31-77f1f0806d28\", \"location\": \"us-south\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}";
     String createTransitGatewayPath = "/transit_gateways";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -262,7 +259,8 @@ public void testCreateTransitGatewayWOptions() throws Throwable {
     // Construct an instance of the CreateTransitGatewayOptions model
     CreateTransitGatewayOptions createTransitGatewayOptionsModel = new CreateTransitGatewayOptions.Builder()
       .location("us-south")
-      .name("Transit_Service_BWTN_SJ_DL")
+      .name("my-transit-gateway-in-TransitGateway")
+      .allowGreTrafficAcrossZones(true)
       .global(true)
       .resourceGroup(resourceGroupIdentityModel)
       .build();
@@ -358,7 +356,7 @@ public void testDeleteTransitGatewayNoOptions() throws Throwable {
   @Test
   public void testGetTransitGatewayWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"id\": \"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"location\": \"us-south\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"global\": true, \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}";
+    String mockResponseBody = "{\"allow_gre_traffic_across_zones\": true, \"connection_count\": 5, \"connection_needs_attention\": true, \"created_at\": \"2019-01-01T12:00:00.000Z\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"global\": true, \"id\": \"0a06fb9b-820f-4c44-8a31-77f1f0806d28\", \"location\": \"us-south\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}";
     String getTransitGatewayPath = "/transit_gateways/testString";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -410,7 +408,7 @@ public void testGetTransitGatewayNoOptions() throws Throwable {
   @Test
   public void testUpdateTransitGatewayWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"id\": \"ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"location\": \"us-south\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"global\": true, \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}";
+    String mockResponseBody = "{\"allow_gre_traffic_across_zones\": true, \"connection_count\": 5, \"connection_needs_attention\": true, \"created_at\": \"2019-01-01T12:00:00.000Z\", \"crn\": \"crn:v1:bluemix:public:transit:dal03:a/57a7d05f36894e3cb9b46a43556d903e::gateway:ef4dcb1a-fee4-41c7-9e11-9cd99e65c1f4\", \"global\": true, \"id\": \"0a06fb9b-820f-4c44-8a31-77f1f0806d28\", \"location\": \"us-south\", \"name\": \"my-transit-gateway-in-TransitGateway\", \"resource_group\": {\"href\": \"https://resource-manager.bluemix.net/v1/resource_groups/56969d6043e9465c883cb9f7363e78e8\", \"id\": \"56969d6043e9465c883cb9f7363e78e8\"}, \"status\": \"available\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}";
     String updateTransitGatewayPath = "/transit_gateways/testString";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -420,8 +418,9 @@ public void testUpdateTransitGatewayWOptions() throws Throwable {
     // Construct an instance of the UpdateTransitGatewayOptions model
     UpdateTransitGatewayOptions updateTransitGatewayOptionsModel = new UpdateTransitGatewayOptions.Builder()
       .id("testString")
+      .allowGreTrafficAcrossZones(true)
       .global(true)
-      .name("my-transit-gateway")
+      .name("my-resource")
       .build();
 
     // Invoke updateTransitGateway() with a valid options model and verify the result
@@ -464,7 +463,7 @@ public void testUpdateTransitGatewayNoOptions() throws Throwable {
   @Test
   public void testListConnectionsWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"connections\": [{\"base_network_type\": \"classic\", \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"network_account_id\": \"networkAccountId\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"transit_gateway\": {\"crn\": \"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\", \"id\": \"456f58c1-afe7-123a-0a0a-7f3d720f1a44\", \"name\": \"my-transit-gw100\"}, \"tunnels\": [{\"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"first\": {\"href\": \"https://transit.cloud.ibm.com/v1/connections?limit=50\"}, \"limit\": 50, \"next\": {\"href\": \"https://transit.cloud.ibm.com/v1/connections?start=MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa&limit=50\", \"start\": \"MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa\"}}";
+    String mockResponseBody = "{\"connections\": [{\"base_network_type\": \"classic\", \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"network_account_id\": \"networkAccountId\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"transit_gateway\": {\"crn\": \"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\", \"id\": \"456f58c1-afe7-123a-0a0a-7f3d720f1a44\", \"name\": \"my-transit-gw100\"}, \"tunnels\": [{\"base_network_type\": \"classic\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"first\": {\"href\": \"https://transit.cloud.ibm.com/v1/connections?limit=50\"}, \"limit\": 50, \"next\": {\"href\": \"https://transit.cloud.ibm.com/v1/connections?start=MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa&limit=50\", \"start\": \"MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa\"}}";
     String listConnectionsPath = "/connections";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -514,8 +513,8 @@ public void testListConnectionsWRetries() throws Throwable {
   @Test
   public void testListConnectionsWithPagerGetNext() throws Throwable {
     // Set up the two-page mock response.
-    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
-    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
@@ -548,8 +547,8 @@ public void testListConnectionsWithPagerGetNext() throws Throwable {
   @Test
   public void testListConnectionsWithPagerGetAll() throws Throwable {
     // Set up the two-page mock response.
-    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
-    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"transit_gateway\":{\"crn\":\"crn:v1:bluemix:public:transit:us-south:a/123456::gateway:456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"id\":\"456f58c1-afe7-123a-0a0a-7f3d720f1a44\",\"name\":\"my-transit-gw100\"},\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
@@ -578,7 +577,7 @@ public void testListConnectionsWithPagerGetAll() throws Throwable {
   @Test
   public void testListTransitGatewayConnectionsWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"connections\": [{\"base_network_type\": \"classic\", \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"network_account_id\": \"networkAccountId\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"first\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways/{transit_gateway_id}/connections?limit=50\"}, \"limit\": 50, \"next\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways/{transit_gateway_id}/connections?start=MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa&limit=50\", \"start\": \"MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa\"}, \"total_count\": 500}";
+    String mockResponseBody = "{\"connections\": [{\"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"base_network_type\": \"classic\", \"cidr\": \"192.168.0.0/24\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"base_network_type\": \"classic\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"first\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways/{transit_gateway_id}/connections?limit=50\"}, \"limit\": 50, \"next\": {\"href\": \"https://transit.cloud.ibm.com/v1/transit_gateways/{transit_gateway_id}/connections?start=MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa&limit=50\", \"start\": \"MjAyMC0wNS0wOFQxNDoxNzowMy45NzQ5NzNa\"}, \"total_count\": 500}";
     String listTransitGatewayConnectionsPath = "/transit_gateways/testString/connections";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -636,8 +635,8 @@ public void testListTransitGatewayConnectionsNoOptions() throws Throwable {
   @Test
   public void testListTransitGatewayConnectionsWithPagerGetNext() throws Throwable {
     // Set up the two-page mock response.
-    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
-    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"base_network_type\":\"classic\",\"cidr\":\"192.168.0.0/24\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"base_network_type\":\"classic\",\"cidr\":\"192.168.0.0/24\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
@@ -671,8 +670,8 @@ public void testListTransitGatewayConnectionsWithPagerGetNext() throws Throwable
   @Test
   public void testListTransitGatewayConnectionsWithPagerGetAll() throws Throwable {
     // Set up the two-page mock response.
-    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
-    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_network_type\":\"classic\",\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"network_account_id\":\"networkAccountId\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage1 = "{\"next\":{\"start\":\"1\"},\"total_count\":2,\"limit\":1,\"connections\":[{\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"base_network_type\":\"classic\",\"cidr\":\"192.168.0.0/24\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
+    String mockResponsePage2 = "{\"total_count\":2,\"limit\":1,\"connections\":[{\"base_connection_id\":\"975f58c1-afe7-469a-9727-7f3d720f2d32\",\"base_network_type\":\"classic\",\"cidr\":\"192.168.0.0/24\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":64490,\"local_gateway_ip\":\"192.168.100.1\",\"local_tunnel_ip\":\"192.168.129.2\",\"mtu\":9000,\"name\":\"Transit_Service_BWTN_SJ_DL\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"network_type\":\"vpc\",\"prefix_filters\":[{\"action\":\"permit\",\"before\":\"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"ge\":0,\"id\":\"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\",\"le\":32,\"prefix\":\"192.168.100.0/24\",\"updated_at\":\"2019-01-01T12:00:00.000Z\"}],\"prefix_filters_default\":\"permit\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.63.12\",\"remote_tunnel_ip\":\"192.168.129.1\",\"request_status\":\"pending\",\"status\":\"attached\",\"tunnels\":[{\"base_network_type\":\"classic\",\"created_at\":\"2019-01-01T12:00:00.000Z\",\"id\":\"1a15dca5-7e33-45e1-b7c5-bc690e569531\",\"local_bgp_asn\":11,\"local_gateway_ip\":\"10.242.63.12\",\"local_tunnel_ip\":\"192.168.100.20\",\"mtu\":9000,\"name\":\"gre1\",\"network_account_id\":\"networkAccountId\",\"network_id\":\"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\",\"remote_bgp_asn\":65010,\"remote_gateway_ip\":\"10.242.33.22\",\"remote_tunnel_ip\":\"192.168.129.1\",\"status\":\"attached\",\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}],\"updated_at\":\"2019-01-01T12:00:00.000Z\",\"zone\":{\"name\":\"us-south-1\"}}]}";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
@@ -702,7 +701,7 @@ public void testListTransitGatewayConnectionsWithPagerGetAll() throws Throwable
   @Test
   public void testCreateTransitGatewayConnectionWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"base_network_type\": \"classic\", \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"network_account_id\": \"networkAccountId\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}";
+    String mockResponseBody = "{\"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"base_network_type\": \"classic\", \"cidr\": \"192.168.0.0/24\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"base_network_type\": \"classic\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}";
     String createTransitGatewayConnectionPath = "/transit_gateways/testString/connections";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -722,8 +721,8 @@ public void testCreateTransitGatewayConnectionWOptions() throws Throwable {
       .name("us-south-1")
       .build();
 
-    // Construct an instance of the TransitGatewayRedundantGRETunnelTemplate model
-    TransitGatewayRedundantGRETunnelTemplate transitGatewayRedundantGreTunnelTemplateModel = new TransitGatewayRedundantGRETunnelTemplate.Builder()
+    // Construct an instance of the TransitGatewayTunnelTemplate model
+    TransitGatewayTunnelTemplate transitGatewayTunnelTemplateModel = new TransitGatewayTunnelTemplate.Builder()
       .localGatewayIp("10.242.63.12")
       .localTunnelIp("192.168.100.20")
       .name("gre1")
@@ -739,6 +738,7 @@ public void testCreateTransitGatewayConnectionWOptions() throws Throwable {
       .networkType("vpc")
       .baseConnectionId("975f58c1-afe7-469a-9727-7f3d720f2d32")
       .baseNetworkType("classic")
+      .cidr("192.168.0.0/24")
       .localGatewayIp("192.168.100.1")
       .localTunnelIp("192.168.129.2")
       .name("Transit_Service_BWTN_SJ_DL")
@@ -749,7 +749,7 @@ public void testCreateTransitGatewayConnectionWOptions() throws Throwable {
       .remoteBgpAsn(Long.valueOf("65010"))
       .remoteGatewayIp("10.242.63.12")
       .remoteTunnelIp("192.168.129.1")
-      .tunnels(java.util.Arrays.asList(transitGatewayRedundantGreTunnelTemplateModel))
+      .tunnels(java.util.Arrays.asList(transitGatewayTunnelTemplateModel))
       .zone(zoneIdentityModel)
       .build();
 
@@ -845,7 +845,7 @@ public void testDeleteTransitGatewayConnectionNoOptions() throws Throwable {
   @Test
   public void testGetTransitGatewayConnectionWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"base_network_type\": \"classic\", \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"network_account_id\": \"networkAccountId\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}";
+    String mockResponseBody = "{\"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"base_network_type\": \"classic\", \"cidr\": \"192.168.0.0/24\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"base_network_type\": \"classic\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}";
     String getTransitGatewayConnectionPath = "/transit_gateways/testString/connections/testString";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -898,7 +898,7 @@ public void testGetTransitGatewayConnectionNoOptions() throws Throwable {
   @Test
   public void testUpdateTransitGatewayConnectionWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"base_network_type\": \"classic\", \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"network_account_id\": \"networkAccountId\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}";
+    String mockResponseBody = "{\"base_connection_id\": \"975f58c1-afe7-469a-9727-7f3d720f2d32\", \"base_network_type\": \"classic\", \"cidr\": \"192.168.0.0/24\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 64490, \"local_gateway_ip\": \"192.168.100.1\", \"local_tunnel_ip\": \"192.168.129.2\", \"mtu\": 9000, \"name\": \"Transit_Service_BWTN_SJ_DL\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"network_type\": \"vpc\", \"prefix_filters\": [{\"action\": \"permit\", \"before\": \"1a15dcab-7e40-45e1-b7c5-bc690eaa9782\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"ge\": 0, \"id\": \"1a15dcab-7e30-45e1-b7c5-bc690eaa9865\", \"le\": 32, \"prefix\": \"192.168.100.0/24\", \"updated_at\": \"2019-01-01T12:00:00.000Z\"}], \"prefix_filters_default\": \"permit\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.63.12\", \"remote_tunnel_ip\": \"192.168.129.1\", \"request_status\": \"pending\", \"status\": \"attached\", \"tunnels\": [{\"base_network_type\": \"classic\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}], \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}";
     String updateTransitGatewayConnectionPath = "/transit_gateways/testString/connections/testString";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
@@ -1002,27 +1002,27 @@ public void testCreateTransitGatewayConnectionActionsNoOptions() throws Throwabl
     transitGatewayApisService.createTransitGatewayConnectionActions(null).execute();
   }
 
-  // Test the getTransitGatewayGreTunnel operation with a valid options model parameter
+  // Test the listTransitGatewayGreTunnel operation with a valid options model parameter
   @Test
-  public void testGetTransitGatewayGreTunnelWOptions() throws Throwable {
+  public void testListTransitGatewayGreTunnelWOptions() throws Throwable {
     // Register a mock response
     String mockResponseBody = "{\"tunnels\": [{\"base_network_type\": \"classic\", \"created_at\": \"2019-01-01T12:00:00.000Z\", \"id\": \"1a15dca5-7e33-45e1-b7c5-bc690e569531\", \"local_bgp_asn\": 11, \"local_gateway_ip\": \"10.242.63.12\", \"local_tunnel_ip\": \"192.168.100.20\", \"mtu\": 9000, \"name\": \"gre1\", \"network_account_id\": \"networkAccountId\", \"network_id\": \"crn:v1:bluemix:public:is:us-south:a/123456::vpc:4727d842-f94f-4a2d-824a-9bc9b02c523b\", \"remote_bgp_asn\": 65010, \"remote_gateway_ip\": \"10.242.33.22\", \"remote_tunnel_ip\": \"192.168.129.1\", \"status\": \"attached\", \"updated_at\": \"2019-01-01T12:00:00.000Z\", \"zone\": {\"name\": \"us-south-1\"}}]}";
-    String getTransitGatewayGreTunnelPath = "/transit_gateways/testString/connections/testString/tunnels";
+    String listTransitGatewayGreTunnelPath = "/transit_gateways/testString/connections/testString/tunnels";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
       .setResponseCode(200)
       .setBody(mockResponseBody));
 
-    // Construct an instance of the GetTransitGatewayGreTunnelOptions model
-    GetTransitGatewayGreTunnelOptions getTransitGatewayGreTunnelOptionsModel = new GetTransitGatewayGreTunnelOptions.Builder()
+    // Construct an instance of the ListTransitGatewayGreTunnelOptions model
+    ListTransitGatewayGreTunnelOptions listTransitGatewayGreTunnelOptionsModel = new ListTransitGatewayGreTunnelOptions.Builder()
       .transitGatewayId("testString")
       .id("testString")
       .build();
 
-    // Invoke getTransitGatewayGreTunnel() with a valid options model and verify the result
-    Response<RedundantGRETunnelCollection> response = transitGatewayApisService.getTransitGatewayGreTunnel(getTransitGatewayGreTunnelOptionsModel).execute();
+    // Invoke listTransitGatewayGreTunnel() with a valid options model and verify the result
+    Response<TransitGatewayTunnelCollection> response = transitGatewayApisService.listTransitGatewayGreTunnel(listTransitGatewayGreTunnelOptionsModel).execute();
     assertNotNull(response);
-    RedundantGRETunnelCollection responseObj = response.getResult();
+    TransitGatewayTunnelCollection responseObj = response.getResult();
     assertNotNull(responseObj);
 
     // Verify the contents of the request sent to the mock server
@@ -1031,28 +1031,28 @@ public void testGetTransitGatewayGreTunnelWOptions() throws Throwable {
     assertEquals(request.getMethod(), "GET");
     // Verify request path
     String parsedPath = TestUtilities.parseReqPath(request);
-    assertEquals(parsedPath, getTransitGatewayGreTunnelPath);
+    assertEquals(parsedPath, listTransitGatewayGreTunnelPath);
     // Verify query params
     Map<String, String> query = TestUtilities.parseQueryString(request);
     assertNotNull(query);
     assertEquals(query.get("version"), "testString");
   }
 
-  // Test the getTransitGatewayGreTunnel operation with and without retries enabled
+  // Test the listTransitGatewayGreTunnel operation with and without retries enabled
   @Test
-  public void testGetTransitGatewayGreTunnelWRetries() throws Throwable {
+  public void testListTransitGatewayGreTunnelWRetries() throws Throwable {
     transitGatewayApisService.enableRetries(4, 30);
-    testGetTransitGatewayGreTunnelWOptions();
+    testListTransitGatewayGreTunnelWOptions();
 
     transitGatewayApisService.disableRetries();
-    testGetTransitGatewayGreTunnelWOptions();
+    testListTransitGatewayGreTunnelWOptions();
   }
 
-  // Test the getTransitGatewayGreTunnel operation with a null options model (negative test)
+  // Test the listTransitGatewayGreTunnel operation with a null options model (negative test)
   @Test(expectedExceptions = IllegalArgumentException.class)
-  public void testGetTransitGatewayGreTunnelNoOptions() throws Throwable {
+  public void testListTransitGatewayGreTunnelNoOptions() throws Throwable {
     server.enqueue(new MockResponse());
-    transitGatewayApisService.getTransitGatewayGreTunnel(null).execute();
+    transitGatewayApisService.listTransitGatewayGreTunnel(null).execute();
   }
 
   // Test the createTransitGatewayGreTunnel operation with a valid options model parameter
@@ -1085,9 +1085,9 @@ public void testCreateTransitGatewayGreTunnelWOptions() throws Throwable {
       .build();
 
     // Invoke createTransitGatewayGreTunnel() with a valid options model and verify the result
-    Response<RedundantGRETunnelReference> response = transitGatewayApisService.createTransitGatewayGreTunnel(createTransitGatewayGreTunnelOptionsModel).execute();
+    Response<TransitGatewayTunnel> response = transitGatewayApisService.createTransitGatewayGreTunnel(createTransitGatewayGreTunnelOptionsModel).execute();
     assertNotNull(response);
-    RedundantGRETunnelReference responseObj = response.getResult();
+    TransitGatewayTunnel responseObj = response.getResult();
     assertNotNull(responseObj);
 
     // Verify the contents of the request sent to the mock server
@@ -1192,9 +1192,9 @@ public void testGetTransitGatewayConnectionTunnelsWOptions() throws Throwable {
       .build();
 
     // Invoke getTransitGatewayConnectionTunnels() with a valid options model and verify the result
-    Response<RedundantGRETunnelReference> response = transitGatewayApisService.getTransitGatewayConnectionTunnels(getTransitGatewayConnectionTunnelsOptionsModel).execute();
+    Response<TransitGatewayTunnel> response = transitGatewayApisService.getTransitGatewayConnectionTunnels(getTransitGatewayConnectionTunnelsOptionsModel).execute();
     assertNotNull(response);
-    RedundantGRETunnelReference responseObj = response.getResult();
+    TransitGatewayTunnel responseObj = response.getResult();
     assertNotNull(responseObj);
 
     // Verify the contents of the request sent to the mock server
@@ -1238,18 +1238,24 @@ public void testUpdateTransitGatewayConnectionTunnelsWOptions() throws Throwable
       .setResponseCode(200)
       .setBody(mockResponseBody));
 
+    // Construct an instance of the TransitGatewayTunnelPatch model
+    TransitGatewayTunnelPatch transitGatewayTunnelPatchModel = new TransitGatewayTunnelPatch.Builder()
+      .name("gre2")
+      .build();
+    Map<String, Object> transitGatewayTunnelPatchModelAsPatch = transitGatewayTunnelPatchModel.asPatch();
+
     // Construct an instance of the UpdateTransitGatewayConnectionTunnelsOptions model
     UpdateTransitGatewayConnectionTunnelsOptions updateTransitGatewayConnectionTunnelsOptionsModel = new UpdateTransitGatewayConnectionTunnelsOptions.Builder()
       .transitGatewayId("testString")
       .id("testString")
       .greTunnelId("testString")
-      .name("gre2")
+      .transitGatewayTunnelPatch(transitGatewayTunnelPatchModelAsPatch)
       .build();
 
     // Invoke updateTransitGatewayConnectionTunnels() with a valid options model and verify the result
-    Response<RedundantGRETunnelReference> response = transitGatewayApisService.updateTransitGatewayConnectionTunnels(updateTransitGatewayConnectionTunnelsOptionsModel).execute();
+    Response<TransitGatewayTunnel> response = transitGatewayApisService.updateTransitGatewayConnectionTunnels(updateTransitGatewayConnectionTunnelsOptionsModel).execute();
     assertNotNull(response);
-    RedundantGRETunnelReference responseObj = response.getResult();
+    TransitGatewayTunnel responseObj = response.getResult();
     assertNotNull(responseObj);
 
     // Verify the contents of the request sent to the mock server
@@ -1329,7 +1335,7 @@ public void testListGatewayLocationsWRetries() throws Throwable {
   @Test
   public void testGetGatewayLocationWOptions() throws Throwable {
     // Register a mock response
-    String mockResponseBody = "{\"billing_location\": \"us\", \"name\": \"us-south\", \"type\": \"region\", \"local_connection_locations\": [{\"display_name\": \"Dallas\", \"name\": \"us-south\", \"supported_connection_types\": [\"supportedConnectionTypes\"], \"type\": \"region\"}], \"zones\": [{\"zones\": [{\"name\": \"us-south-1\"}]}]}";
+    String mockResponseBody = "{\"billing_location\": \"us\", \"name\": \"us-south\", \"type\": \"region\", \"local_connection_locations\": [{\"display_name\": \"Dallas\", \"name\": \"us-south\", \"supported_connection_types\": [\"supportedConnectionTypes\"], \"type\": \"region\"}], \"zones\": [{\"name\": \"us-south-1\"}]}";
     String getGatewayLocationPath = "/locations/testString";
     server.enqueue(new MockResponse()
       .setHeader("Content-type", "application/json")
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptionsTest.java
index 81df35b50..bc05af4ef 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionActionsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptionsTest.java
index d2c3d00a2..d0aab4171 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -15,7 +15,7 @@
 
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.CreateTransitGatewayConnectionOptions;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilter;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelTemplate;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelTemplate;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneIdentityByName;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
@@ -50,7 +50,7 @@ public void testCreateTransitGatewayConnectionOptions() throws Throwable {
       .build();
     assertEquals(zoneIdentityModel.name(), "us-south-1");
 
-    TransitGatewayRedundantGRETunnelTemplate transitGatewayRedundantGreTunnelTemplateModel = new TransitGatewayRedundantGRETunnelTemplate.Builder()
+    TransitGatewayTunnelTemplate transitGatewayTunnelTemplateModel = new TransitGatewayTunnelTemplate.Builder()
       .localGatewayIp("10.242.63.12")
       .localTunnelIp("192.168.100.20")
       .name("gre1")
@@ -59,19 +59,20 @@ public void testCreateTransitGatewayConnectionOptions() throws Throwable {
       .remoteTunnelIp("192.168.129.1")
       .zone(zoneIdentityModel)
       .build();
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.localGatewayIp(), "10.242.63.12");
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.localTunnelIp(), "192.168.100.20");
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.name(), "gre1");
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.remoteBgpAsn(), Long.valueOf("65010"));
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.remoteGatewayIp(), "10.242.33.22");
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.remoteTunnelIp(), "192.168.129.1");
-    assertEquals(transitGatewayRedundantGreTunnelTemplateModel.zone(), zoneIdentityModel);
+    assertEquals(transitGatewayTunnelTemplateModel.localGatewayIp(), "10.242.63.12");
+    assertEquals(transitGatewayTunnelTemplateModel.localTunnelIp(), "192.168.100.20");
+    assertEquals(transitGatewayTunnelTemplateModel.name(), "gre1");
+    assertEquals(transitGatewayTunnelTemplateModel.remoteBgpAsn(), Long.valueOf("65010"));
+    assertEquals(transitGatewayTunnelTemplateModel.remoteGatewayIp(), "10.242.33.22");
+    assertEquals(transitGatewayTunnelTemplateModel.remoteTunnelIp(), "192.168.129.1");
+    assertEquals(transitGatewayTunnelTemplateModel.zone(), zoneIdentityModel);
 
     CreateTransitGatewayConnectionOptions createTransitGatewayConnectionOptionsModel = new CreateTransitGatewayConnectionOptions.Builder()
       .transitGatewayId("testString")
       .networkType("vpc")
       .baseConnectionId("975f58c1-afe7-469a-9727-7f3d720f2d32")
       .baseNetworkType("classic")
+      .cidr("192.168.0.0/24")
       .localGatewayIp("192.168.100.1")
       .localTunnelIp("192.168.129.2")
       .name("Transit_Service_BWTN_SJ_DL")
@@ -82,13 +83,14 @@ public void testCreateTransitGatewayConnectionOptions() throws Throwable {
       .remoteBgpAsn(Long.valueOf("65010"))
       .remoteGatewayIp("10.242.63.12")
       .remoteTunnelIp("192.168.129.1")
-      .tunnels(java.util.Arrays.asList(transitGatewayRedundantGreTunnelTemplateModel))
+      .tunnels(java.util.Arrays.asList(transitGatewayTunnelTemplateModel))
       .zone(zoneIdentityModel)
       .build();
     assertEquals(createTransitGatewayConnectionOptionsModel.transitGatewayId(), "testString");
     assertEquals(createTransitGatewayConnectionOptionsModel.networkType(), "vpc");
     assertEquals(createTransitGatewayConnectionOptionsModel.baseConnectionId(), "975f58c1-afe7-469a-9727-7f3d720f2d32");
     assertEquals(createTransitGatewayConnectionOptionsModel.baseNetworkType(), "classic");
+    assertEquals(createTransitGatewayConnectionOptionsModel.cidr(), "192.168.0.0/24");
     assertEquals(createTransitGatewayConnectionOptionsModel.localGatewayIp(), "192.168.100.1");
     assertEquals(createTransitGatewayConnectionOptionsModel.localTunnelIp(), "192.168.129.2");
     assertEquals(createTransitGatewayConnectionOptionsModel.name(), "Transit_Service_BWTN_SJ_DL");
@@ -99,7 +101,7 @@ public void testCreateTransitGatewayConnectionOptions() throws Throwable {
     assertEquals(createTransitGatewayConnectionOptionsModel.remoteBgpAsn(), Long.valueOf("65010"));
     assertEquals(createTransitGatewayConnectionOptionsModel.remoteGatewayIp(), "10.242.63.12");
     assertEquals(createTransitGatewayConnectionOptionsModel.remoteTunnelIp(), "192.168.129.1");
-    assertEquals(createTransitGatewayConnectionOptionsModel.tunnels(), java.util.Arrays.asList(transitGatewayRedundantGreTunnelTemplateModel));
+    assertEquals(createTransitGatewayConnectionOptionsModel.tunnels(), java.util.Arrays.asList(transitGatewayTunnelTemplateModel));
     assertEquals(createTransitGatewayConnectionOptionsModel.zone(), zoneIdentityModel);
   }
 
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptionsTest.java
index 53b73647f..b0524eb53 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayConnectionPrefixFilterOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptionsTest.java
index 02ae58db0..810e482a0 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayGreTunnelOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptionsTest.java
index 744e579d2..f2bece386 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -39,12 +39,14 @@ public void testCreateTransitGatewayOptions() throws Throwable {
 
     CreateTransitGatewayOptions createTransitGatewayOptionsModel = new CreateTransitGatewayOptions.Builder()
       .location("us-south")
-      .name("Transit_Service_BWTN_SJ_DL")
+      .name("my-transit-gateway-in-TransitGateway")
+      .allowGreTrafficAcrossZones(true)
       .global(true)
       .resourceGroup(resourceGroupIdentityModel)
       .build();
     assertEquals(createTransitGatewayOptionsModel.location(), "us-south");
-    assertEquals(createTransitGatewayOptionsModel.name(), "Transit_Service_BWTN_SJ_DL");
+    assertEquals(createTransitGatewayOptionsModel.name(), "my-transit-gateway-in-TransitGateway");
+    assertEquals(createTransitGatewayOptionsModel.allowGreTrafficAcrossZones(), Boolean.valueOf(true));
     assertEquals(createTransitGatewayOptionsModel.global(), Boolean.valueOf(true));
     assertEquals(createTransitGatewayOptionsModel.resourceGroup(), resourceGroupIdentityModel);
   }
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptionsTest.java
index 8b674bdca..26d85d760 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/CreateTransitGatewayRouteReportOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptionsTest.java
index eca599401..26b6468d4 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptionsTest.java
index b7852b3a4..e20eac14f 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionPrefixFilterOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptionsTest.java
index cae3a2a96..7ecbc5b15 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayConnectionTunnelsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptionsTest.java
index c862f4525..aa409d1ff 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptionsTest.java
index 52cfb39fc..5a32e009a 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/DeleteTransitGatewayRouteReportOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptionsTest.java
index b9b6dc981..ab7aa54e9 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetGatewayLocationOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptionsTest.java
index 06d6ca289..1b7a0a1d6 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptionsTest.java
index d24b6d613..1c3b1baba 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionPrefixFilterOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptionsTest.java
index eab4e6d05..c9a8835c0 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayConnectionTunnelsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptionsTest.java
index 49428bf0e..a0de79064 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptionsTest.java
index 9ac819af7..4481c2965 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/GetTransitGatewayRouteReportOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptionsTest.java
index bc05293f4..474d1a71c 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListConnectionsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptionsTest.java
index 5f523788e..8f38ed7e3 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListGatewayLocationsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptionsTest.java
index d8376f006..ec4909a13 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionPrefixFiltersOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptionsTest.java
index 9d0cf1ffd..a50036e50 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayConnectionsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayGreTunnelOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayGreTunnelOptionsTest.java
new file mode 100644
index 000000000..5ed1701aa
--- /dev/null
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayGreTunnelOptionsTest.java
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ListTransitGatewayGreTunnelOptions;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
+import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+/**
+ * Unit test class for the ListTransitGatewayGreTunnelOptions model.
+ */
+public class ListTransitGatewayGreTunnelOptionsTest {
+  final HashMap<String, InputStream> mockStreamMap = TestUtilities.createMockStreamMap();
+  final List<FileWithMetadata> mockListFileWithMetadata = TestUtilities.creatMockListFileWithMetadata();
+
+  @Test
+  public void testListTransitGatewayGreTunnelOptions() throws Throwable {
+    ListTransitGatewayGreTunnelOptions listTransitGatewayGreTunnelOptionsModel = new ListTransitGatewayGreTunnelOptions.Builder()
+      .transitGatewayId("testString")
+      .id("testString")
+      .build();
+    assertEquals(listTransitGatewayGreTunnelOptionsModel.transitGatewayId(), "testString");
+    assertEquals(listTransitGatewayGreTunnelOptionsModel.id(), "testString");
+  }
+
+  @Test(expectedExceptions = IllegalArgumentException.class)
+  public void testListTransitGatewayGreTunnelOptionsError() throws Throwable {
+    new ListTransitGatewayGreTunnelOptions.Builder().build();
+  }
+
+}
\ No newline at end of file
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptionsTest.java
index 3e13f7c38..5dd0ea101 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewayRouteReportsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptionsTest.java
index b41e0d6a8..828016fc6 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ListTransitGatewaysOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnectionTest.java
index c06f04fd5..4be012f1d 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstConnectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGTest.java
index 6f56f123d..0eafa64af 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnectionTest.java
index 71dd9c51b..a8e02b867 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationFirstTGWConnectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnectionTest.java
index f13ce96d9..1010df877 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextConnectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGTest.java
index fd1afc187..d5d398395 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnectionTest.java
index 573962f1a..660879c8a 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PaginationNextTGWConnectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollectionTest.java
index 30d06ebdd..e5893cef7 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCollectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCustTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCustTest.java
index ba607e99a..987eb5029 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCustTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterCustTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPutTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPutTest.java
index 835515aa7..c468e9fc8 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPutTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/PrefixFilterPutTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptionsTest.java
index cb7a15e78..243391c89 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ReplaceTransitGatewayConnectionPrefixFilterOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentityTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentityTest.java
index 859c1cc1c..81ce1ee38 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentityTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupIdentityTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReferenceTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReferenceTest.java
index 1e785b727..1b2cda397 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReferenceTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ResourceGroupReferenceTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollectionTest.java
index 94cbd6922..3edf972cf 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportCollectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgpTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgpTest.java
index 44e2e4007..850ffc252 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgpTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionBgpTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRouteTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRouteTest.java
index 86af314a7..0ac41fca4 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRouteTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionRouteTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionTest.java
index f666cf6eb..a5269d9ed 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportConnectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroupTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroupTest.java
index cbceb081d..d9af8892a 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroupTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteGroupTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteTest.java
index 334786c51..c5bc03f0a 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportOverlappingRouteTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportTest.java
index 70864a1a5..f94547dd7 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/RouteReportTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollectionTest.java
index 8f1695613..042c3e589 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSCollectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocationTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocationTest.java
index 61436cf16..43f087197 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocationTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocalLocationTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasicTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasicTest.java
index 5dcd2b938..38477850d 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasicTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationBasicTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationTest.java
index 9152ba257..184cb21a5 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TSLocationTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -16,7 +16,6 @@
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TSLocalLocation;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TSLocation;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReferenceCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
 import java.io.InputStream;
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollectionTest.java
index 0a7a93466..e3e2c9505 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionCollectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -13,15 +13,14 @@
 
 package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
 
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PaginationFirstConnection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PaginationNextConnection;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RgreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitConnection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitConnectionCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilterReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
 import com.ibm.cloud.sdk.core.util.DateUtils;
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionTest.java
index d9521caee..80808d2f0 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitConnectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -13,12 +13,11 @@
 
 package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
 
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GreTunnelZoneReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RgreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitConnection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilterReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
 import com.ibm.cloud.sdk.core.util.DateUtils;
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollectionTest.java
index 23cf99296..31effdea5 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayCollectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollectionTest.java
index a5c97e5d0..35d5183e5 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollectionTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCollectionTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -13,14 +13,13 @@
 
 package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
 
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PaginationFirstTGWConnection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.PaginationNextTGWConnection;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RgreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionCollection;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionCust;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilterReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
 import com.ibm.cloud.sdk.core.util.DateUtils;
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCustTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCustTest.java
index 21cb223a0..bc7410d11 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCustTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionCustTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -13,11 +13,10 @@
 
 package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
 
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.GreTunnelZoneReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.RgreTunnelZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionCust;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayConnectionPrefixFilterReference;
-import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayRedundantGRETunnelReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
 import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
 import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
 import com.ibm.cloud.sdk.core.util.DateUtils;
@@ -37,18 +36,19 @@ public class TransitGatewayConnectionCustTest {
   @Test
   public void testTransitGatewayConnectionCust() throws Throwable {
     TransitGatewayConnectionCust transitGatewayConnectionCustModel = new TransitGatewayConnectionCust();
-    assertNull(transitGatewayConnectionCustModel.getBaseNetworkType());
-    assertNull(transitGatewayConnectionCustModel.getName());
-    assertNull(transitGatewayConnectionCustModel.getNetworkId());
-    assertNull(transitGatewayConnectionCustModel.getNetworkType());
-    assertNull(transitGatewayConnectionCustModel.getId());
     assertNull(transitGatewayConnectionCustModel.getBaseConnectionId());
+    assertNull(transitGatewayConnectionCustModel.getBaseNetworkType());
+    assertNull(transitGatewayConnectionCustModel.getCidr());
     assertNull(transitGatewayConnectionCustModel.getCreatedAt());
+    assertNull(transitGatewayConnectionCustModel.getId());
     assertNull(transitGatewayConnectionCustModel.getLocalBgpAsn());
     assertNull(transitGatewayConnectionCustModel.getLocalGatewayIp());
     assertNull(transitGatewayConnectionCustModel.getLocalTunnelIp());
     assertNull(transitGatewayConnectionCustModel.getMtu());
+    assertNull(transitGatewayConnectionCustModel.getName());
     assertNull(transitGatewayConnectionCustModel.getNetworkAccountId());
+    assertNull(transitGatewayConnectionCustModel.getNetworkId());
+    assertNull(transitGatewayConnectionCustModel.getNetworkType());
     assertNull(transitGatewayConnectionCustModel.getPrefixFilters());
     assertNull(transitGatewayConnectionCustModel.getPrefixFiltersDefault());
     assertNull(transitGatewayConnectionCustModel.getRemoteBgpAsn());
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReferenceTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReferenceTest.java
index 0c0b6d8f5..c0e4b4e50 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReferenceTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterReferenceTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterTest.java
index 62f99d498..853330f20 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayConnectionPrefixFilterTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReferenceTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReferenceTest.java
index f30831734..21c0eb79d 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReferenceTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayReferenceTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTest.java
index 405e9e532..378d3a6fb 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -33,12 +33,15 @@ public class TransitGatewayTest {
   @Test
   public void testTransitGateway() throws Throwable {
     TransitGateway transitGatewayModel = new TransitGateway();
-    assertNull(transitGatewayModel.getId());
-    assertNull(transitGatewayModel.getCrn());
-    assertNull(transitGatewayModel.getName());
-    assertNull(transitGatewayModel.getLocation());
+    assertNull(transitGatewayModel.isAllowGreTrafficAcrossZones());
+    assertNull(transitGatewayModel.getConnectionCount());
+    assertNull(transitGatewayModel.isConnectionNeedsAttention());
     assertNull(transitGatewayModel.getCreatedAt());
+    assertNull(transitGatewayModel.getCrn());
     assertNull(transitGatewayModel.isGlobal());
+    assertNull(transitGatewayModel.getId());
+    assertNull(transitGatewayModel.getLocation());
+    assertNull(transitGatewayModel.getName());
     assertNull(transitGatewayModel.getResourceGroup());
     assertNull(transitGatewayModel.getStatus());
     assertNull(transitGatewayModel.getUpdatedAt());
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelCollectionTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelCollectionTest.java
new file mode 100644
index 000000000..57224cd35
--- /dev/null
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelCollectionTest.java
@@ -0,0 +1,40 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelCollection;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
+import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
+import com.ibm.cloud.sdk.core.util.DateUtils;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+/**
+ * Unit test class for the TransitGatewayTunnelCollection model.
+ */
+public class TransitGatewayTunnelCollectionTest {
+  final HashMap<String, InputStream> mockStreamMap = TestUtilities.createMockStreamMap();
+  final List<FileWithMetadata> mockListFileWithMetadata = TestUtilities.creatMockListFileWithMetadata();
+
+  @Test
+  public void testTransitGatewayTunnelCollection() throws Throwable {
+    TransitGatewayTunnelCollection transitGatewayTunnelCollectionModel = new TransitGatewayTunnelCollection();
+    assertNull(transitGatewayTunnelCollectionModel.getTunnels());
+  }
+}
\ No newline at end of file
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelPatchTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelPatchTest.java
new file mode 100644
index 000000000..54b388f8a
--- /dev/null
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelPatchTest.java
@@ -0,0 +1,57 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelPatch;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
+import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+/**
+ * Unit test class for the TransitGatewayTunnelPatch model.
+ */
+public class TransitGatewayTunnelPatchTest {
+  final HashMap<String, InputStream> mockStreamMap = TestUtilities.createMockStreamMap();
+  final List<FileWithMetadata> mockListFileWithMetadata = TestUtilities.creatMockListFileWithMetadata();
+
+  @Test
+  public void testTransitGatewayTunnelPatch() throws Throwable {
+    TransitGatewayTunnelPatch transitGatewayTunnelPatchModel = new TransitGatewayTunnelPatch.Builder()
+      .name("gre2")
+      .build();
+    assertEquals(transitGatewayTunnelPatchModel.name(), "gre2");
+
+    String json = TestUtilities.serialize(transitGatewayTunnelPatchModel);
+
+    TransitGatewayTunnelPatch transitGatewayTunnelPatchModelNew = TestUtilities.deserialize(json, TransitGatewayTunnelPatch.class);
+    assertTrue(transitGatewayTunnelPatchModelNew instanceof TransitGatewayTunnelPatch);
+    assertEquals(transitGatewayTunnelPatchModelNew.name(), "gre2");
+  }
+  @Test
+  public void testTransitGatewayTunnelPatchAsPatch() throws Throwable {
+    TransitGatewayTunnelPatch transitGatewayTunnelPatchModel = new TransitGatewayTunnelPatch.Builder()
+      .name("gre2")
+      .build();
+
+    Map<String, Object> mergePatch = transitGatewayTunnelPatchModel.asPatch();
+
+    assertEquals(mergePatch.get("name"), "gre2");
+  }
+
+}
\ No newline at end of file
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTemplateTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTemplateTest.java
new file mode 100644
index 000000000..29a21a0df
--- /dev/null
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTemplateTest.java
@@ -0,0 +1,75 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnelTemplate;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneIdentityByName;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
+import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+/**
+ * Unit test class for the TransitGatewayTunnelTemplate model.
+ */
+public class TransitGatewayTunnelTemplateTest {
+  final HashMap<String, InputStream> mockStreamMap = TestUtilities.createMockStreamMap();
+  final List<FileWithMetadata> mockListFileWithMetadata = TestUtilities.creatMockListFileWithMetadata();
+
+  @Test
+  public void testTransitGatewayTunnelTemplate() throws Throwable {
+    ZoneIdentityByName zoneIdentityModel = new ZoneIdentityByName.Builder()
+      .name("us-south-1")
+      .build();
+    assertEquals(zoneIdentityModel.name(), "us-south-1");
+
+    TransitGatewayTunnelTemplate transitGatewayTunnelTemplateModel = new TransitGatewayTunnelTemplate.Builder()
+      .localGatewayIp("10.242.63.12")
+      .localTunnelIp("192.168.100.20")
+      .name("gre1")
+      .remoteBgpAsn(Long.valueOf("65010"))
+      .remoteGatewayIp("10.242.33.22")
+      .remoteTunnelIp("192.168.129.1")
+      .zone(zoneIdentityModel)
+      .build();
+    assertEquals(transitGatewayTunnelTemplateModel.localGatewayIp(), "10.242.63.12");
+    assertEquals(transitGatewayTunnelTemplateModel.localTunnelIp(), "192.168.100.20");
+    assertEquals(transitGatewayTunnelTemplateModel.name(), "gre1");
+    assertEquals(transitGatewayTunnelTemplateModel.remoteBgpAsn(), Long.valueOf("65010"));
+    assertEquals(transitGatewayTunnelTemplateModel.remoteGatewayIp(), "10.242.33.22");
+    assertEquals(transitGatewayTunnelTemplateModel.remoteTunnelIp(), "192.168.129.1");
+    assertEquals(transitGatewayTunnelTemplateModel.zone(), zoneIdentityModel);
+
+    String json = TestUtilities.serialize(transitGatewayTunnelTemplateModel);
+
+    TransitGatewayTunnelTemplate transitGatewayTunnelTemplateModelNew = TestUtilities.deserialize(json, TransitGatewayTunnelTemplate.class);
+    assertTrue(transitGatewayTunnelTemplateModelNew instanceof TransitGatewayTunnelTemplate);
+    assertEquals(transitGatewayTunnelTemplateModelNew.localGatewayIp(), "10.242.63.12");
+    assertEquals(transitGatewayTunnelTemplateModelNew.localTunnelIp(), "192.168.100.20");
+    assertEquals(transitGatewayTunnelTemplateModelNew.name(), "gre1");
+    assertEquals(transitGatewayTunnelTemplateModelNew.remoteBgpAsn(), Long.valueOf("65010"));
+    assertEquals(transitGatewayTunnelTemplateModelNew.remoteGatewayIp(), "10.242.33.22");
+    assertEquals(transitGatewayTunnelTemplateModelNew.remoteTunnelIp(), "192.168.129.1");
+    assertEquals(transitGatewayTunnelTemplateModelNew.zone().toString(), zoneIdentityModel.toString());
+  }
+
+  @Test(expectedExceptions = IllegalArgumentException.class)
+  public void testTransitGatewayTunnelTemplateError() throws Throwable {
+    new TransitGatewayTunnelTemplate.Builder().build();
+  }
+
+}
\ No newline at end of file
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTest.java
new file mode 100644
index 000000000..0f5e7e188
--- /dev/null
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/TransitGatewayTunnelTest.java
@@ -0,0 +1,53 @@
+/*
+ * (C) Copyright IBM Corp. 2025.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package com.ibm.cloud.networking.transit_gateway_apis.v1.model;
+
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.TransitGatewayTunnel;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.model.ZoneReference;
+import com.ibm.cloud.networking.transit_gateway_apis.v1.utils.TestUtilities;
+import com.ibm.cloud.sdk.core.service.model.FileWithMetadata;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.List;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+/**
+ * Unit test class for the TransitGatewayTunnel model.
+ */
+public class TransitGatewayTunnelTest {
+  final HashMap<String, InputStream> mockStreamMap = TestUtilities.createMockStreamMap();
+  final List<FileWithMetadata> mockListFileWithMetadata = TestUtilities.creatMockListFileWithMetadata();
+
+  @Test
+  public void testTransitGatewayTunnel() throws Throwable {
+    TransitGatewayTunnel transitGatewayTunnelModel = new TransitGatewayTunnel();
+    assertNull(transitGatewayTunnelModel.getBaseNetworkType());
+    assertNull(transitGatewayTunnelModel.getCreatedAt());
+    assertNull(transitGatewayTunnelModel.getId());
+    assertNull(transitGatewayTunnelModel.getLocalBgpAsn());
+    assertNull(transitGatewayTunnelModel.getLocalGatewayIp());
+    assertNull(transitGatewayTunnelModel.getLocalTunnelIp());
+    assertNull(transitGatewayTunnelModel.getMtu());
+    assertNull(transitGatewayTunnelModel.getName());
+    assertNull(transitGatewayTunnelModel.getNetworkAccountId());
+    assertNull(transitGatewayTunnelModel.getNetworkId());
+    assertNull(transitGatewayTunnelModel.getRemoteBgpAsn());
+    assertNull(transitGatewayTunnelModel.getRemoteGatewayIp());
+    assertNull(transitGatewayTunnelModel.getRemoteTunnelIp());
+    assertNull(transitGatewayTunnelModel.getStatus());
+    assertNull(transitGatewayTunnelModel.getUpdatedAt());
+    assertNull(transitGatewayTunnelModel.getZone());
+  }
+}
\ No newline at end of file
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptionsTest.java
index 206d5a7da..15172870b 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptionsTest.java
index 65708acc8..63bae5ad0 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionPrefixFilterOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptionsTest.java
index 08c8c41e7..09ebf8b41 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayConnectionTunnelsOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -35,12 +35,12 @@ public void testUpdateTransitGatewayConnectionTunnelsOptions() throws Throwable
       .transitGatewayId("testString")
       .id("testString")
       .greTunnelId("testString")
-      .name("gre2")
+      .transitGatewayTunnelPatch(java.util.Collections.singletonMap("anyKey", "anyValue"))
       .build();
     assertEquals(updateTransitGatewayConnectionTunnelsOptionsModel.transitGatewayId(), "testString");
     assertEquals(updateTransitGatewayConnectionTunnelsOptionsModel.id(), "testString");
     assertEquals(updateTransitGatewayConnectionTunnelsOptionsModel.greTunnelId(), "testString");
-    assertEquals(updateTransitGatewayConnectionTunnelsOptionsModel.name(), "gre2");
+    assertEquals(updateTransitGatewayConnectionTunnelsOptionsModel.transitGatewayTunnelPatch(), java.util.Collections.singletonMap("anyKey", "anyValue"));
   }
 
   @Test(expectedExceptions = IllegalArgumentException.class)
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptionsTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptionsTest.java
index a5a9b1b63..e840940f4 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptionsTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/UpdateTransitGatewayOptionsTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -33,12 +33,14 @@ public class UpdateTransitGatewayOptionsTest {
   public void testUpdateTransitGatewayOptions() throws Throwable {
     UpdateTransitGatewayOptions updateTransitGatewayOptionsModel = new UpdateTransitGatewayOptions.Builder()
       .id("testString")
+      .allowGreTrafficAcrossZones(true)
       .global(true)
-      .name("my-transit-gateway")
+      .name("my-resource")
       .build();
     assertEquals(updateTransitGatewayOptionsModel.id(), "testString");
+    assertEquals(updateTransitGatewayOptionsModel.allowGreTrafficAcrossZones(), Boolean.valueOf(true));
     assertEquals(updateTransitGatewayOptionsModel.global(), Boolean.valueOf(true));
-    assertEquals(updateTransitGatewayOptionsModel.name(), "my-transit-gateway");
+    assertEquals(updateTransitGatewayOptionsModel.name(), "my-resource");
   }
 
   @Test(expectedExceptions = IllegalArgumentException.class)
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByNameTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByNameTest.java
index de6a332bf..211b6d3f1 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByNameTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityByNameTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityTest.java
index 92b4757c8..3c67bb6d8 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneIdentityTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReferenceTest.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReferenceTest.java
index 703a74fea..6cadb2ea8 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReferenceTest.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/model/ZoneReferenceTest.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
diff --git a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/utils/TestUtilities.java b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/utils/TestUtilities.java
index e2291b615..4fb11b49d 100644
--- a/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/utils/TestUtilities.java
+++ b/modules/transit-gateway-apis/src/test/java/com/ibm/cloud/networking/transit_gateway_apis/v1/utils/TestUtilities.java
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright IBM Corp. 2024.
+ * (C) Copyright IBM Corp. 2025.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at