I am installing a plain WAR file with a simple JSP for testing of my Cluster for session replication. I am having 2 JBoss AS nodes on same system i.e Verticle Clustering. But when i doing failover from node1 to node2, session is not get replicated. On Node1, session will be A and on node2 on failover mode session id changes. I am also facing the following error while starting the JBoss AS Node. Failed to setup clustering, clustering disabled. NoClassDefFoundError: org/jboss/cache/pojo/jmx/PojoCacheJmxWrapperMBean Please help for solving this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4202456#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...