Multicast routing table in a multicast communication system is configured to improve the delivery of multicast data towards the destination from the source. Update message is updated by being transmitted along the path towards the destination from the source, and stores the identification information of the multicast channels associated to the routing node of the multicast routing table for this path is preceded. Then, the update message, it is modified by changing the directions of the current node identification information in the intermediate nodes preceding the update message is passed to a local unicast routing protocol to forward messages to their destinations then is.
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