Adding a stand-alone WebSphere proxy server to the SIP Edge Proxy cluster

Install a stand-alone IBM® WebSphere® proxy server for use with a cluster of IBM Sametime® servers.

About this task

A cluster of Sametime servers requires at least one WebSphere proxy server to handle the routing task. The WebSphere proxy server can be hosted on a product node, or on a separate computer.

To install a stand-alone WebSphere proxy server on a separate computer, you first install an extra IBM SIP Edge Proxy node using the Secondary Node option. You then remove the Sametime application server from the new node. Finally, you configure the WebSphere proxy server for use with the cluster.

Attention: To upgrade a stand-alone WebSphere proxy server that was installed using this process, you must run a newer Sametime installation for the original Sametime component. Because the Sametime application was removed during the initial installation of the stand-alone proxy server, it cannot be found during the upgrade, and the upgrade fails. To work around this issue you will need to temporarily recreate the Sametime application in the WebSphere Integrated Solution Console and assign it to the node being upgraded. After the upgrade successfully completes, you can remove the Sametime application. For detailed steps on resolving this upgrade issue, see the IBM TechNote Issue while upgrading a stand-alone WebSphere proxy server using the Sametime installation program.

Procedure

What to do next

If you installed a WebSphere proxy server on one of the Sametime nodes in the cluster and then see excessive CPU usage on that node, you should install and configure an additional proxy server.