Multiplex communications – Fault recovery
Reexamination Certificate
2008-01-25
2010-11-09
Cho, Hong (Department: 2467)
Multiplex communications
Fault recovery
C370S390000, C370S432000
Reexamination Certificate
active
07830785
ABSTRACT:
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.
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Li Guangzhi
Wang Dongmei
AT&T Labs, Inc.
Cho Hong
Scheibel Robert C
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