Standby router protocol using optimal route metric

Details Standby router protocol using optimal route metric Standby router protocol using optimal route metric

2002-05-20

2009-02-03

Abelson, Ronald (Department: 2619)

Multiplex communications

Fault recovery

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

C370S219000

Reexamination Certificate

active

07486611

ABSTRACT:
Redundant gateway methods, apparatus and systems use more than one gateway device in a gateway device group for communications directed outside of a LAN. Failover services in the event that an active router or other gateway device fails. In determining the priority of members of the group to become the active router/device for the group, a route metric is used as the priority value in elections held to determine the operating mode of each group member. This route metric is a numerical value representing the optimality of a route available between the router and a destination such as a remote network. By comparing the members' respective route metrics from time to time and in the event of a trigger event, the active router/device in a group is guaranteed to be the router with the optimal route to that remote network.

REFERENCES:
patent: 5473599 (1995-12-01), Li et al.
patent: 5519704 (1996-05-01), Farinacci et al.
patent: 6049524 (2000-04-01), Fukushima et al.
patent: 6108300 (2000-08-01), Coile et al.
patent: 6374362 (2002-04-01), Ohtsu
patent: 6393293 (2002-05-01), Saewert et al.
patent: 6487283 (2002-11-01), Thomas et al.
Network Working Group, RFC 2281 “Cisco Hot Standby Router Protocol (HSRP),” Mar. 1998.

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