Thanks for the detailed explanation. Now i clearly see the problem. The eventing specs allow for SubscriptionManager interposition. This means you can have multiple event sources being handled by just one subscription manager. In composition with WS-Addressing a subscription response contains the subscription manager EPR (endpoint reference). Which basically is the URL plus reference parameters. Applying this idea to your cluster topology means that you would have a single SubscriptionManager instance running on a particular node, addressed through WS-Addressing. Still this lacks some features that would need to be implemented: - SubscriptionManager runs HA-Singleton - There would only be one EventDispatcher, available through HA-JNDI - Event sources need to know the subscription manager EPR details. This could be propagated through HA-JNDI. Does this make sense to you? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989686#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...