Patent · US Active

Method and apparatus using multiprotocol label switching (MPLS) label distribution protocol (LDP) to establish label switching paths (LSPS) for directed forwarding

US7609620B2 · kind B2 · utility

5Cited by

20References

25Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Alex E. Raj · McLean, US
Robert Thomas · San Jose, US
Prabhu Vaithilingam · Carp, CA

Key dates

Filing date	Aug 15, 2005
Grant date	Oct 27, 2009
Priority date	—
Expiry date	Jan 23, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04L45/50
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.