Multihop nested tunnel restoration

Details Multihop nested tunnel restoration Multihop nested tunnel restoration

2008-07-29

2008-07-29

Pham, Chi H. (Department: 2616)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S242000

Reexamination Certificate

active

07406031

ABSTRACT:
A network communications tunnel is established by assigning a unique label to each communications link between adjacent nodes in a pre-defined network path. A node's unique label is used to forward a data packet to the adjacent node in the pre-defined path. The unique labels for all the nodes in the pre-defined path are stored by each node in the tunnel. A bypass tunnel to bypass a node in the pre-defined path may be established to reroute data packets around a failed communication link in the tunnel. The bypass tunnel may be established before the communication link failure providing fast tunnel restoration.

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