What is the use of "-u" option in JBOSS AS7

Question

In some jboss related documentations found that they used -u option for starting the JBOSS AS7 server like follows.

$ ./bin/standalone.sh --server-config=standalone-ha.xml -Djboss.node.name=node1 -b 192.168.210.101 -u 239.23.42.2 -Djboss.bind.address.management=192.168.210.101

What is the use of "-u" in JBOSS AS7?

Answer 1

It is used to set a multicast address, generally useful for high availability cluster configuration.

See the documentation.