All servers in your cluster must have at least one IIOP listener defined, since the Web-load balancer uses IIOP for interserver communication. To configure the Web-load balancer:
In the Management Console, expand the Servers folder, and select the server.
On the Start Modules tab, under System Start Modules, verify that webapp-wlb is enabled; it is by default. If you change any values, click Apply.
Define a cluster, and optionally, define one or more cluster partitions.
Add servers to the cluster, and optionally, to the cluster partitions.
Verify that all the servers in the cluster have at least one IIOP listener defined.
