In a communication network where multiple bus systems are interconnected by a bus bridge, a first node attached to a first bus system acquires a first channel for transmission of packets to a first multicast address and broadcasts a first message pertaining to the first channel and the first multicast...http://www.google.ca/patents/US7120146?utm_source=gb-gplus-sharePatent US7120146 - Method and network for interconnecting separate multicast channels acquired for separate bus systems
