cluster computing - Two tomcat instances with different multicast addresses are grouped when using Jrockit -

I am trying to set up the Tomcat Cluster at Jerokat 1.6.0_45-B 06, and face a problem Is falling. It seems that the Zerotic group does not use the Multicast address, I have 2 instances set of Tomcat in the same OS, and they are given Inter multicast address, one is 228.0.0.3, second is 228.0.0.4. But they are grouped in the same cluster.

This will only be expected when they are set to separate portals.

Is this a bug about a jacquet?

Some operating systems have been seen to ignore the address for multicast. The use of different ports is the safest way to ensure different groups.