Configuration
There are two things to configure:
The JGroupsCacheManagerPeerProviderFactory which is done once per CacheManager and therefore once per ehcache.xml file.
The JGroupsCacheReplicatorFactory which is added to each cache's configuration.
The main configuration happens in the JGroupsCacheManagerPeerProviderFactory connect sub-property.
A connect property is passed directly to the JGroups channel and therefore all the protocol stacks and options available in JGroups can be set.
If you use the UDP multicast stack there is no additional configuration. If you use a TCP stack you will need to specify the initial hosts in the cluster.