9.2.6 Transport type
A transport type is the type of network communication a core group uses to communicate to its members. There are three types of transports available:
Multicast
Unicast
Channel Framework No matter which transport type is used, there is always a socket between each pair of JVMs for point-to-point messages and failure detection. For example, if you have a total of eight JVMs in your core group, then every JVM will have seven sockets to others.