Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2011-05-17
2011-05-17
Yao, Kwang B (Department: 2473)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
active
07944811
ABSTRACT:
In one embodiment, a multicast router initiates non-stop forwarding (NSF) recovery. In the NDF recovery, data traffic forwarding operations continue throughout a data plane of the multicast router in the presence of a failure in a control plane of the multicast router. When the multicast router receives incoming multicast packets on an interface during the NSF recovery, it compares the incoming multicast packets with entries of a multicast forwarding table of the data plane of the multicast router. In response to the comparison, the multicast router prevents multiple multicast forwarders from forwarding multicast packets for a route over a link coupled to the interface during the NSF recovery.
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Kouvelas Isidoros
Windisch Kurt J.
Casari and McKenna, LLP
Cisco Technology Inc.
Tran Tung Q
Yao Kwang B
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