When Tivoli® Federated Identity Manager runtime is deployed, it is automatically mapped to the default WebSphere® Application Server. In WebSphere cluster environments, WebSphere Application Server is usually deployed into a topology with a Web server such as IBM® HTTP Web server. In this case, a WebSphere plug-in has been installed and configured for the IBM HTTP Web server.
The IBM HTTP Web server performs the workload balancing across cluster members. This means that the Tivoli Federated Identity Manager runtime must be mapped to the Web server.