BGP hitless upgrade approaches

Details BGP hitless upgrade approaches BGP hitless upgrade approaches

2005-04-14

2009-10-27

Shah, Chirag G (Department: 2419)

Multiplex communications

Fault recovery

Reexamination Certificate

active

07609617

ABSTRACT:
A method is disclosed for upgrading network protocol software, comprising receiving a new version of Border Gateway Protocol (BGP) software on a standby route processor that is coupled to an active route processor in a redundant arrangement; transferring, from the active route processor to the standby route processor, one or more transport protocol connections that are associated with one or more active BGP sessions of the active route processor; transferring, from the active route processor to the standby route processor, BGP session information representing the active BGP sessions; progressively shutting down an active BGP process of the active route processor; and switching control of BGP data processing to the standby route processor. The route processors may be placed in a stateful switchover mode of operation temporarily only during the transferring, shutting down, and switching. Thus a hitless BGP upgrade approach is provided.

REFERENCES:
patent: 6910148 (2005-06-01), Ho et al.
patent: 2003/0007500 (2003-01-01), Rombeaut et al.
patent: 2003/0140166 (2003-07-01), Harvey et al.
patent: 2004/0083128 (2004-04-01), Buckingham et al.
patent: 2004/0090913 (2004-05-01), Scudder et al.
patent: 2004/0100969 (2004-05-01), Sankar et al.
patent: 2005/0078600 (2005-04-01), Rusmisel et al.
patent: 2006/0002402 (2006-01-01), Nalawade et al.
Goldberg, Charles, “Making sure net routing doesn't fail,” Network World, Nov. 18, 2002, 2 pages.
Cisco Systems, “Nonstop Forwarding with Stateful Switchover on the Cisco Catalyst 6500,” Cisco White Paper, 2005, 16 pages.
Cisco Systems, “Border Gateway Protocol,” Internetworking Technologies Handbook, Chapter 39, 10 pages, Sep. 11, 2003.

Affiliated with

Also associated with

Rating

BGP hitless upgrade approaches does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with BGP hitless upgrade approaches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and BGP hitless upgrade approaches will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4101918