Router redundancy in data communication networks

Details Router redundancy in data communication networks Router redundancy in data communication networks

2006-06-22

2010-12-28

Ryman, Daniel J (Department: 2466)

Multiplex communications

Fault recovery

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

C370S216000, C370S218000, C370S219000, C370S220000, C370S221000, C370S229000, C379S279000, C709S235000, C709S236000, C709S237000, C709S238000, C709S239000, C714S003000, C714S004110, C714S005110

Reexamination Certificate

active

07859992

ABSTRACT:
A method of providing router redundancy within a distributed network of routers, wherein messages are routed within the network based on virtual router identifiers, involves organizing the routers into one or more redundancy groups; assigning a physical identifier to each router in each of the redundancy groups; assigning one or more virtual identifiers to each redundancy group; selecting one of the routers of a particular redundancy group as a currently active router associated with a particular virtual identifier assigned to that redundancy group; advertising among the distributed network of routers for each redundancy group the physical identifier for the active router and information enabling other routers to determine the virtual identifier with which the currently active router is associated; and forwarding messages destined for a particular virtual router identifier to the currently active router based on the physical identifier of the currently active router.

REFERENCES:
patent: 5473599 (1995-12-01), Li et al.
patent: 7152179 (2006-12-01), Critchfield
patent: 7486698 (2009-02-01), Betts et al.
patent: 7586838 (2009-09-01), Sonoda
patent: 2004/0085965 (2004-05-01), Fotedar
patent: 2005/0137998 (2005-06-01), Betts et al.
patent: 1 594 264 (2005-11-01), None
patent: WO 2004/028102 (2004-04-01), None
Hinden/Nokia R. “Virtual Router Redundancy Protocol for IPv6; draft-ietf-vrrp-ipv6-spec-07. txt;”IETF Standard-Working-Draft, Internet Engineering Task Force, IETF, CH, vol. vrrp No. 7 Sep. 28, 2004 XP015039135 ISSN: 0000-004 Para. 3, 4.1, 4.2, 5.0, 5.2.1, 5.3.3, 6.1, 6.4.3.
Carzaniga A et al: “A routing scheme for content-based networking” INFOCOM 2004. Twenty-Third Annual Joint Conference of the IEEE Computer and Communications Societies, Hong Kong, PR China Mar. 7-11, 2004, Piscataway, N.J. USA, IEEEE vol. 2, Mar. 7, 2004, pp. 918-928 XP010740838 ISBN: 0-7803-8355-9.

Affiliated with

Also associated with

Rating

Router redundancy in data communication networks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Router redundancy in data communication networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Router redundancy in data communication networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4179674