We have also tried to ensure that the UDP packet can flow through properly within the network. Below output of the testing of multicast and UDP port. Both server can communicate to each other. Can someone enlighten me what happen to the setup, could it be due to the network structure or the jboss AS configuration? Thanks for your help. | --- From sender --- | java -cp jgroups.jar org.jgroups.tests.McastSenderTest -bind_addr 150.105.49.84 -mcast_addr 228.1.3.88 -port 45566 | Socket=0.0.0.0/0.0.0.0:45566, ttl=32, bind interface=/150.105.49.84 | > eragdfsghsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | dsfgfsdgh | > << Received response from 150.105.49.79:45566: Hello from Bela | dfsgfsdhfsd | > << Received response from 150.105.49.79:45566: Hello from Bela | dsfgfsdhgsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | dfsgsdfh | > << Received response from 150.105.49.79:45566: Hello from Bela | sdgasdfgasdf | > << Received response from 150.105.49.79:45566: Hello from Bela | sdfgsdfgh | > << Received response from 150.105.49.79:45566: Hello from Bela | dfsgsdfh | > << Received response from 150.105.49.79:45566: Hello from Bela | sdfghsdfhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | sdfhsdfhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | dsfhsdfh | > << Received response from 150.105.49.79:45566: Hello from Bela | dfshsdfhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | sdhgsdfhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | dssfhsdfh | > << Received response from 150.105.49.79:45566: Hello from Bela | dfshfsdhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | dsfhsdfhsdfh | > << Received response from 150.105.49.79:45566: Hello from Bela | dfshsdfhhgfsdhfdshsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | dfshsdfh | > << Received response from 150.105.49.79:45566: Hello from Bela | dfshsdfhfsd | > << Received response from 150.105.49.79:45566: Hello from Bela | sdfhsfdhdsh | > << Received response from 150.105.49.79:45566: Hello from Bela | dsfhsdfhsdfhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | sdfhsfdhsdfhsdf | > << Received response from 150.105.49.79:45566: Hello from Bela | ^Cawang@lsgridtalkp02 # | | | java -cp jgroups.jar org.jgroups.tests.McastReceiverTest -bind_addr 150.105.49.79 -mcast_addr 228.1.3.88 -port 45566 | Socket=0.0.0.0/0.0.0.0:45566, bind interface=/150.105.49.79 | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | eragdfsghsdf [sender=150.105.49.84:45566] | dsfgfsdgh [sender=150.105.49.84:45566] | dfsgfsdhfsd [sender=150.105.49.84:45566] | dsfgfsdhgsdf [sender=150.105.49.84:45566] | dfsgsdfh [sender=150.105.49.84:45566] | sdgasdfgasdf [sender=150.105.49.84:45566] | sdfgsdfgh [sender=150.105.49.84:45566] | dfsgsdfh [sender=150.105.49.84:45566] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | sdfghsdfhsdf [sender=150.105.49.84:45566] | sdfhsdfhsdf [sender=150.105.49.84:45566] | dsfhsdfh [sender=150.105.49.84:45566] | dfshsdfhsdf [sender=150.105.49.84:45566] | sdhgsdfhsdf [sender=150.105.49.84:45566] | dssfhsdfh [sender=150.105.49.84:45566] | dfshfsdhsdf [sender=150.105.49.84:45566] | dsfhsdfhsdfh [sender=150.105.49.84:45566] | dfshsdfhhgfsdhfdshsdf [sender=150.105.49.84:45566] | dfshsdfh [sender=150.105.49.84:45566] | dfshsdfhfsd [sender=150.105.49.84:45566] | sdfhsfdhdsh [sender=150.105.49.84:45566] | dsfhsdfhsdfhsdf [sender=150.105.49.84:45566] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | sdfhsfdhsdfhsdf [sender=150.105.49.84:45566] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | pw‑UDPStgGtasPartition5 [sender=150.105.49.79:52429] | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4178948#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...