Patent ID: 8184628
Filing Date: 2012-05-22
Classification: H04L

Abstract:
1. A method comprising: receiving a join message from a receiver at a receiver edge router, said join message identifying a source and a group; creating at least two forwarding trees for transmitting multicast data streams comprising duplicate data to the receiver edge router, said forwarding trees comprising a root at a source edge router in communication with the source, and different network paths; receiving a packet from one of said forwarding trees at the receiver edge router; processing said received packet at the receiver edge router to determine if said received packet is a duplicate of another packet received at the receiver edge router; discarding said received packet if said received packet is a duplicate packet; and forwarding said received packet to the receiver if said received packet is not a duplicate packet; wherein said received packet comprises a Realtime Transport Protocol (RTP) header and wherein determining if said received packet is a duplicate packet comprises examining said RTP header and wherein forwarding said received packet comprises removing said RTP header.