Method and apparatus for protection path setup

Details Method and apparatus for protection path setup Method and apparatus for protection path setup

2006-08-22

2006-08-22

Nguyen, Chau (Department: 2616)

Multiplex communications

Fault recovery

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

C370S225000

Reexamination Certificate

active

07095712

ABSTRACT:
When setting up a working path, a protection path is automatically set up by taking each node on the working path as a start point. A working path setup request message carrying “protection needed
ot-needed” information is transmitted from an ingress node toward an egress node along the route of the working path. When transferring a path setup response message as a response to it, each node autonomously determines the route of the protection path and sends out a protection path setup request message along the route of the protection path.

REFERENCES:
patent: 6850705 (2005-02-01), Su et al.
patent: 2001/0032271 (2001-10-01), Allen
patent: 2002/0133756 (2002-09-01), Jain
patent: 2004/0042402 (2004-03-01), Galand et al.
patent: 06037783 (1994-02-01), None
patent: 10145374 (1998-05-01), None
Huang, et al. A Path Protection/Restoration Mechanism for MPLS Networks Tellabs Operations, Inc. Jul. 2000.

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