Multiplex communications – Fault recovery – Bypass an inoperative channel
Reexamination Certificate
2005-08-15
2009-10-27
Pham, Chi H (Department: 2416)
Multiplex communications
Fault recovery
Bypass an inoperative channel
C370S397000, C370S395300, C370S395500
Reexamination Certificate
active
07609620
ABSTRACT:
A method and apparatus method for providing fast rerouting in a network is presented. The method and apparatus assign a first local label for a prefix, and assign a second local label for the prefix. The first local label is advertised to an upstream peer and the second local label is advertised to a downstream peer. A forwarding entry from the first local label for a prefix is switched to the second local label for the prefix when a failure of a link or next hop is detected.
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Raj Alex E.
Thomas Robert H.
Vaithilingam Prabhu
Brinks Hofer Gilson & Lione
Cisco Technology Inc.
Pham Chi H
Wong Warner
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