weblogic.cluster.MulticastMonitor, monitoring multicast traffic in a Weblogic Cluster

First, do a $WL_HOME/server/bin/setWLSEnv.sh, to put weblogic.jar in your classpath.

java weblogic.cluster.MulticastMonitor <multicastaddress> <port> <domainname> <clustername> [<domaindir>]

example:

java weblogic.cluster.MulticastMonitor 239.190.1.15 18224 ACMEDomain acmeclusterappli
Received heartbeat message of size 251 from acmeappli1 @ Tue Sep 08 11:04:37 CEST 2009 messageVersion:0,0,0 seqNum:365 fragment # 0
Received heartbeat message of size 251 from acmeappli2 @ Tue Sep 08 11:04:37 CEST 2009 messageVersion:0,0,0 seqNum:382 fragment # 0
Received heartbeat message of size 251 from acmeappli1 @ Tue Sep 08 11:04:46 CEST 2009 messageVersion:0,0,0 seqNum:366 fragment # 0
Received heartbeat message of size 251 from acmeappli2 @ Tue Sep 08 11:04:47 CEST 2009 messageVersion:0,0,0 seqNum:383 fragment # 0