Hello What are the parameters that define the communication between two nodes to be clustered on two different machines? I have to create two nodes in a cluster. The two nodes has to reside on different machine. In node1 (machine1) if have specified PartitionName and udpGroup as 228.1.2.3 (as stated in JClustering tutorial) In node2 (machine2), I have done same changes. But the org.jboss.ha.framework.server.ClusterPartition MBean does not show node2 as part of node1 cluster. Do i need to ask my unix admin to open some ports on both the machine so that both machines can communicate? Or do i need to provide some values somewhere? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4254463#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...