for normal situation, our ejb client (tomcat) can connect to jboss server successfully e.g. we have 3 jboss in clusters, we are using ejb 3 stateless session bean (clustered), when one jboss is down for deployment, and up again, the client can reconnect to this jboss again but if a network failure occurs, i.e. the client can't connect to all the 3 jbosses because our internal network is down; but when the network is recovered, the client cannot reconnect automatically, and keeps showing "Unreachable?: Service unavailable." it can only recovered by restarting the client (tomcat) (note, the jboss servers are up and running for all the time, even in network failure) details: jboss: 4.2.0-GA | Caused by: java.lang.RuntimeException: Unreachable?: Service unavailable. | at org.jboss.aspects.remoting.ClusterChooserInterceptor.invoke(ClusterChooserInterceptor.java:176) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.remoting.ClusteredIsLocalInterceptor.invoke(ClusteredIsLocalInterceptor.java:55) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | at org.jboss.ejb3.stateless.StatelessClusteredProxy.invoke(StatelessClusteredProxy.java:105) | | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4184426#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...