How does clustering affect the security context token with WS-SecureConversation?

Rampart keeps Token Storage in the Axis2 ConfigurationContext.

TokenStorage storage = (TokenStorage) configurationContext.getProperty(TokenStorage.TOKEN_STORAGE_KEY);

If you use WSAS [which is built on top of Axis2] to enable clustering, it replicates following three session data accross nodes.

-ServiceContext: Data that should only be available to a service.
-ServiceGroupContext: Common data for all the services in a service group.
-ConfigurationContext: Common data for all the service groups

This explains more about how to clustering with WSAS.