OK; that's why I asked. :-) Do you see any significant issue with making something like this the default in server.xml? <Engine name="jboss.web" defaultHost="localhost" jvmRoute="n${server.peer.id:0}"> Assumption here is that JBM's needs force us to set server.peer.id to some integer value. Downside I see is just a minor performance hit of needlessly adding ".n0" to session ids when JK isn't used. Anything worse? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4099412#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...