Disabling IPv6 addressing for the Sametime Gateway

Disable IPv6 addressing support for the IBM® WebSphere® Application Server on which the IBM Sametime® Gateway components are hosted. This task is required for all operating systems.

Procedure

  1. Log in to the Integrated Solutions Console as the WebSphere administrator.
  2. Click Servers > Server Types > Application Servers.
  3. In the list of application servers, click the server hosting the Sametime Gateway.
  4. On the Configuration page, locate the "Server Infrastructure" section, and click Java and process management > Process definition > Java virtual machine > Custom Properties.
  5. For each of the Sametime Gateway servers in the cluster, complete one of these steps:
    • If the java.net.preferIPv4Stack custom property is listed, edit it and set its Value to true.
    • If the java.net.preferIPv4Stack custom property is not listed, create it now by clicking New and assigning it the following values before clicking OK:
      • Name: java.net.preferIPv4Stack
      • Value: true
  6. In a clustered environment, complete these steps for each of the Sametime Proxy Servers:
    1. Click Servers > Server Types > Application Servers.
    2. In the list of application servers, select the server hosting the WebSphere SIP Proxy Server.
    3. On the Configuration page, locate the "Server Infrastructure" section, and click Java and process management > Process definition > Java virtual machine > Custom Properties.
    4. For each of the WebSphere SIP Proxy Servers in the Sametime Gateway cluster, complete one of these steps:
      • If the java.net.preferIPv4Stack custom property is listed, edit it and set its Value to true.
      • If the java.net.preferIPv4Stack custom property is not listed, create it now by clicking New and assigning it the following values before clicking OK:
        • Name: java.net.preferIPv4Stack
        • Value: true
  7. Complete one of these steps according to whether you are using a stand alone or clustered Sametime Gateway Server.
    1. If you are using a stand-alone Sametime Gateway Server, restart the server.
    2. If you are using a clustered Sametime Gateway Server, synchronize nodes and restart the cluster by completing these steps:
      1. From the deployment manager's Integrated Solutions Console, click System Administration > Nodes.
      2. Select all nodes in the cluster.
      3. Click Full Resynchronize.
      4. From the navigator, click System Administration > Node agents.
      5. Select a node agent, and the click Restart all servers on Node.