System and Method for Restoration in a Multimedia IP Network

摘要

Disclosed herein are systems, methods, and computer readable media for modifying IP backbone link weights such that multicast traffic and unicast traffic will not travel on a same path between nodes. The method comprises assigning link weights to nodes within an IP backbone such that multicast forwarding paths and unicast forwarding paths are failure disjoint, and delivering undelivered multicast packets using IP unicast encapsulation to the loopback address of next hop router on a multicast tree upon link/interface failure.

主权项

1. A method comprising:
starting from a source node, locating a series of network links in an undirected network graph that form a ring; assigning weights to the series of network links such that multicast forwarding paths and unicast forwarding paths are failure disjoint; and upon network failure, delivering undelivered multicast packets using internet protocol unicast encapsulation to a next hop router on a multicast tree.