Well, you're trying to use multicast test but based on this:
2011-12-01 15:20:27,550 INFO (InfinispanServer-Main) [org.infinispan.remoting.transport.jgroups.JGroupsTransport] ISPN000079: Cache local address is osps040-49425, physical addresses are [220.127.116.11:7800]
I'd bet that you're trying to use TCP to connect machines together since 7800 port is the default port for TCP clusters.
See http://www.jgroups.org/manual/html/ch02.html and try to create a basic cluster with the actual jgroups configuration that you're using in the log.
Yes , you were right I re-did the configuration and got it working.. Sorry for leaving the thread dangling and your time. Ill try to be a better community member