Restoring multi-segment pseudowires following failure of a...

Details Restoring multi-segment pseudowires following failure of a... Restoring multi-segment pseudowires following failure of a...

2011-08-23

2011-08-23

Ngo, Ricky (Department: 2464)

Multiplex communications

Fault recovery

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

C370S400000

Reexamination Certificate

active

08004964

ABSTRACT:
In one embodiment, a protected switching provider edge (S-PE) and a backup S-PE may be operated, where the protected S-PE has at least one multi-segment pseudowire (MS-PW) and is between a first and second provider edge (PE) on the MS-PW. To protect the protected S-PE, the first and second PE may be informed of the backup S-PE and a backup label to reach the second and first PE, respectively, via the backup S-PE to remain on the MS-PW. Upon detecting loss of connectivity with the protected S-PE, the first and/or second PE may forward packets of the MS-PW to the backup S-PE with the corresponding backup label to reach the second or first PE, respectively, on the MS-PW.

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