Thanks for the link, it helped a lot! It didn't work with just changing the udp address, but it did work with the whole (groupname,groupaddress,groupport) configuration: NODE 1 ./run.sh -c all -b [IP1] -u 233.0.0.5 -Djboss.partition.name=P_CLA1 -Djboss.messaging.groupname=G_CLA1 -Djboss.messaging.ServerPeerID=1 -Djboss.messaging.datachanneludpport=45567 -Djboss.messaging.controlchanneludpport=45568 NODE 2 ./run.sh -c all2 -b [IP2] -u 233.0.0.6 -Djboss.partition.name=P_CLA2 -Djboss.messaging.groupname=G_CLA2 -Djboss.messaging.ServerPeerID=1 -Djboss.messaging.datachanneludpport=45667 -Djboss.messaging.controlchanneludpport=45668 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4219920#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...