AUTOMATIC ROUTE TAGGING OF BGP NEXT-HOP ROUTES IN IGP

Title:

AUTOMATIC ROUTE TAGGING OF BGP NEXT-HOP ROUTES IN IGP

Document Type and Number:

WIPO Patent Application WO2006071901

Kind Code:

A3

Abstract:

A technique configures an intermediate network node to automatically determine whether a route advertised by a routing protocol is important for fast convergence in a computer network. As used herein, an important route needed for fast convergence is a route advertised by the routing protocol, such as an exterior gateway routing protocol (EGP) process executing on the node, as a next-hop address, since external connectivity relies on such a route. Notably, the EGP process interacts with an interior gateway routing protocol (IGP) process executing on the node to identify the route as an important route. Identification of an important route, in turn, allows IGP to process the route in a high priority fashion, thereby facilitating fast convergence.

Inventors:

FILSFILS CLARENCE (BE)
PREVIDI STEFANO B (IT)
VASSEUR JEAN-PHILIPPE (US)

Application Number:

PCT/US2005/047150

Publication Date:

December 14, 2006

Filing Date:

December 27, 2005

Export Citation:

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Assignee:

CISCO TECH INC (US)

International Classes:

H04L12/28

Foreign References:

US6658481B1	2003-12-02
US20030112809A1	2003-06-19
US20060159076A1	2006-07-20

Other References: