Creating transports for load balancing in a Sametime Gateway cluster

If you installed multiple IBM® WebSphere® proxy servers for a cluster, you will need to configure additional transport chains for use with a load balancer. Configure the complete set of transport chains on every proxy server in the cluster.

Procedure

  1. On the WebSphere proxy server, log in to the Integrated Solutions Console as the WebSphere administrator.
  2. In the navigator, click Servers > Server Types > WebSphere proxy servers.
  3. In the proxy servers table, click on the name of the server that you want to configure.
  4. On the Configuration page, look under "Proxy Settings", expand SIP Proxy Server Settings, and then click SIP proxy server transports.
  5. Modify the transport for TCP (non-secured) Connections by adding the non-secured load balancer port as follows:
    1. In the Transport chains table, click on SIP_PROXY_CHAIN.
    2. On the SIP_PROXY_CHAIN page, look in the "Transport Channels" section and click UDP inbound channel.
    3. In the Port list, select PROXY_SIP_ADDRESS_LB.
    4. Type the port value.
    5. Click OK to save the updated transport chain.
    6. Save the change to the master configuration by clicking the Save link in the "Messages" box at the beginning of the page.
  6. Modify the transport for TLS (secure) Connections by adding the secure load balancer port as follows:
    1. In the Transport chains table, click on SIPS_PROXY_CHAIN.
    2. On the SIPS_PROXY_CHAIN page, look in the "Transport Channels" section and click TCP inbound channel.
    3. In the Port list, select PROXY_SIPS_ADDRESS_LB.
    4. Type the port value.
    5. Click OK to save the updated transport chain.
    6. Save the change to the master configuration by clicking the Save link in the "Messages" box at the beginning of the page.
  7. Repeat this task for every WebSphere proxy server that is used with the cluster.