Router and routing protocol redundancy

Details Router and routing protocol redundancy Router and routing protocol redundancy

2008-06-24

2008-06-24

Lohn, Joshua A (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130

Reexamination Certificate

active

07392424

ABSTRACT:
A router and routing protocol redundancy are disclosed to reduce service outage or degradation for a network device and thus to increase service availability on a network due to software and hardware failures of the network device. A network device such as router includes a redundancy platform having an active controller system and a standby controller system. A routing protocol state change is received or generated by the active controller system. The received or generated routing protocol state change is replicated to the standby controller system. By replicating the routing protocol state change, the standby controller system can maintain the routing protocol sessions for the network device if a failure occurs in the active controller system. Furthermore, the routing protocol states are maintained in realtime to handle the dynamic changes created by routing protocols.

REFERENCES:
patent: 5453977 (1995-09-01), Flammer, III et al.
patent: 5471469 (1995-11-01), Flammer, III et al.
patent: 5473599 (1995-12-01), Li et al.
patent: 5513314 (1996-04-01), Kandasamy et al.
patent: 5870382 (1999-02-01), Tounai et al.
patent: 5936936 (1999-08-01), Alexander, Jr. et al.
patent: 6148410 (2000-11-01), Baskey et al.
patent: 6366558 (2002-04-01), Howes et al.
patent: 6415323 (2002-07-01), McCanne et al.
patent: 6490246 (2002-12-01), Fukushima et al.
patent: 6577634 (2003-06-01), Tsukakoshi et al.
patent: 6885635 (2005-04-01), Haq et al.
patent: 2002/0176355 (2002-11-01), Mimms et al.
patent: A 11-161534 (1999-06-01), None
patent: WO 96/12363 (1996-04-01), None
Tsukakoshi, et al., “A Study of Routing Control Information Sharing Method on Backbone Router”, Mar. 1998, pp. 568-569.
Foreign Office Action (Notice of Reasons for Rejection), P2002-548930 (dispatched Jan. 16, 2007).
“Introducing Real-Time Replicator,” Chapter 1.
“Fault Detection in Routing Protocols,” Daniel Massey et al., Apr. 1999.
“Temasek Polytechnic Campus Network Design & Implementation: A Case Study,” J. Y. Liu, et al., 1999, pp. 209-214.
“A Guide to the TCP/IP Protocol Suite,” pp. 182-184.
“Trainet: A new label switching scheme,” Yehuda Afek et al., May 2000, pp. 874-883.
“Scalable Link-State Internet Routing,” J. J. Garcia-Luna et al., Sep. 1998, pp. 52-61.
“Unleash the Power, Building Multi-Service IP Networks with ATM Cores,”.
“The Technology of IP Routers in the New Public Network,” Ericsson IP Infrastructure, Jan. 2000.
“Temasek Polytechnic Campus Network Design & Implemntation: A Case Study,” J.Y. Liu et al., 1999.

Affiliated with

Also associated with

Rating

Router and routing protocol redundancy 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 and routing protocol redundancy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Router and routing protocol redundancy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2811724