Multiplex router device comprising a function for controlling a

Details Multiplex router device comprising a function for controlling a Multiplex router device comprising a function for controlling a

1998-11-19

2000-04-11

Kizou, Hassan

Multiplex communications

Fault recovery

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

370238, 370389, H04L 1228

Patent

active

060495243

ABSTRACT:
A multiplex router device, having a multiplex configuration, is instrumental in reducing internal and external traffic flows for a routing protocol process that occurs at a time of system switchover. A data base integration module, in a route calculation unit in the active mode, stores network link-state information collected by a routing protocol packet transmission-reception module in a link-state data base, and at the same time sends the information to a route calculation unit, but does not send routing protocol information collected. In the route calculation unit in the standby mode, a data base integration module that received the network link-state information stores its contents into its own link-state data base. When a failure occurs in the route calculation unit in the active mode, the route calculation unit performs the routing protocol process by using the stored link-state data base.

REFERENCES:
patent: 5138615 (1992-08-01), Lamport et al.
patent: 5835696 (1998-11-01), Hess
patent: 5848227 (1998-12-01), Sheu
"Configuration Fundamentals Configuration Guide", Cisco Ios Release 11.2, Cisco Systems.
"New Cisco 7500 Delivers More Routing Muscle" Packet Magazine Archives, Third Quarter 1995, Cisco Systems Inc.
"Configuring High System Availability Operation" Route Switch Processor (RSP2) Installation and Configuration Cisco Connection Documentation, Enterprise Series vol. 3, No. 5@1996.
"Configuration Fundamentals, Configuration Guide", Cisco Internetwork Operation System Release 11.2, Cisco Systems Inc., 1996.

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