Hello, I am working on solaris 10(SunOS 5.10 Generic_118822-18 sun4u sparc SUNW,Sun-Fire-V240), jboss 4.0.3sp1, jdk 1.5.0_01-b08. I have configured two nodes "devl-01" and "devl-02" (copy of "all") on the same physical machine. When I start them one by one. The cluster is detected and they see each other. I have following output on the console: 14:54:41,241 INFO [partition-01] All Members : 2 ([3.187.196.86:53043, 3.187.196.86:63043]) | 14:49:25,936 INFO [DetachedHANamingService$AutomaticDiscovery] Listening on /0.0.0.0:1102, group=228.1.2.4, HA-JNDI address=3.187.196.86:1100 | so thats fine. But I have one more node "devl-03" on a separate physical machine (versions of OS, jboss and jdk are the same). When I start this 3rd node, it does not join the existing cluster. I have specified the same partition name, mcast_address and port by specifiying the System properties as : -Djboss.partition.name=partition-01 -Djboss.partition.udpGroup=228.1.2.4" But after startup the 3rd node has output on console like: 14:51:24,492 INFO [partition-01] All Members : 1 ([3.187.200.23:53043]) | 14:51:24,727 INFO [DetachedHANamingService$AutomaticDiscovery] Listening on /0.0.0.0:1102, group=228.1.2.4, HA-JNDI address=3.187.200.23:1100 Can any one guide me, why the 3rd node is not joining the cluster? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991644#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...