Patent ID: 7684316
Filing Date: 2010-03-23
Classification: H04L

Abstract:
1. A method comprising: receiving a multicast join message at a node, the node comprising a plurality of interfaces comprising at least two ring interfaces; identifying said interface at which said multicast join message was received and selecting one or more of said plurality of interfaces to transmit said multicast join message based on whether said multicast join message was received on one of said ring interfaces; if said multicast join message was received on one of said ring interfaces, transmitting said multicast join message on another of said interfaces; if said multicast join message was not received on one of said ring interfaces, transmitting said multicast join message on both of said ring interfaces; receiving multicast data transmitted from a source node and destined for one or more receivers; and transmitting said multicast data on said interface at which said multicast join message was received, wherein duplicate multicast data received from the source node is not transmitted to said one or more receivers.