Hello again, Before I begin, let me state that I have already read each of the following links: http://wiki.jboss.org/wiki/Wiki.jsp?page=Probe http://wiki.jboss.org/wiki/Wiki.jsp?page=JGroupsPING http://wiki.jboss.org/wiki/Wiki.jsp?page=TestingJBoss http://www.jgroups.org/javagroupsnew/docs/manual/html/ch02.html#ItDoesntWork That being said. Will anyone explicitly explain to me why my nodes will not join a existing cluster? I have a working cluster of 3 nodes, each joining and communicating effectively. I have created 3 more nodes which are to join the same cluster. The configurations of each node are mirror images of each other with the exception of their respective node names/ip addresses. I have configured each node in my existing cluster from the default configuration "all". I simply made changed the PartitionName. I understand that the moderators are very busy here, but these links only provide the top layer of information that we need. Someone, anyone PLEASE HELP! thanks again... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4100814#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...