Creating custom properties for IP-forwarding load balancing in a Sametime Gateway cluster

If you installed multiple IBM® WebSphere® proxy servers for a cluster, you will need to create an additional set of custom properties on each proxy server to enable it to work with a load balancer. Create the complete set of properties on each proxy server.

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 settings.
  5. Look in the "Additional Properties" section and click Custom Properties.
  6. Create the custom properties as follows, using the information from the table:
    Table 1. Custom propertiesUse the Name and Value from each row to define one new custom property.
    Name Value
    tcp.IPSprayer.host Load_balancer_cluster_IP_address

    The virtual IP address (cluster address) of the load balancer that you will deploy in front of the WebSphere proxy servers.
    tcp.IPSprayer.port TCP_port The port used by the TCP non-secured connections; typically 5060.
    udp.IPSprayer.host Load_balancer_cluster_IP_address

    The virtual IP address (cluster address) of the load balancer that you will deploy in front of the WebSphere proxy servers (this is the same IP address used for the tcp.IPSprayer.host).
    udp.IPSprayer.port The port used by the UDP non-secured connections; typically 5060.
    tls.IPSprayer.host Load_balancer_cluster_IP_address

    The virtual IP address (cluster address) of the load balancer that you will deploy in front of the WebSphere proxy servers (this is the same IP address used for the tcp.IPSprayer.host).
    tls.IPSprayer.port The port used by the TLS encrypted connections; typically 5061.
    forceRport true
    useViaSentByForOutboundConnections true  
    ipForwardingLBEnabled true
    1. In the custom properties table, click the New button.
    2. Type a Name and a Value for the new custom property.
    3. Click OK to save the new property.
    4. Repeat for each additional custom property.
  7. Save the change to the master configuration by clicking the Save link in the "Messages" box at the beginning of the page.
  8. Repeat this task for every WebSphere proxy server in the cluster.