For draft docs on AS 5 clustering, see the file attached at the *bottom* of https://www.jboss.org/community/docs/DOC-12928 . It includes a Quick Start section. But, you're already doing what it says. Seems there is some problem parsing what you are passing on the command line; this isn't a clustering problem. Suggest you start node 2 from the command line and then cut from your console window the line including the command and everything through the the last "run.bat: unused non-option argument: 192.168.1.140" bit. Paste it here undedited, using the "code" button. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4229049#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...