Qi I Ning

US Patent:

7236453, Jun 26, 2007

Filed:

Jun 27, 2002

Appl. No.:

10/185809

Inventors:

Lance A. Visser - Dallas TX, US
Qi Ning - Dallas TX, US

Assignee:

Jeremy Benjamin, Trustee - Tel Aviv

International Classification:

G01R 31/08
G06F 15/173
G06F 11/00

US Classification:

370219, 370220, 370221, 714 2, 709239

Abstract:

High availability BGP4 is based on redundant hardware as well as redundant software that replicates the RUN state of BGP4. There are two copies, respectively active and backup, of BGP4 running on two separate redundant hardware platforms. All BGP4 internal implementations apply various methods to replicate the running state of BGP4 independently of peer network routers. When this hardware or software fails on one redundant hardware platform, peer routers are unaware of the failure. Internally, based on duplicative states, the local router recovers from the failure and keeps the protocol running. During the recovery period, the local router can bring up a backup again. In the HA architecture, these activities are not detected by peer routers, such that there is no instability to the Internet backbone caused by BGP4 failure.

US Patent:

7499394, Mar 3, 2009

Filed:

Jun 25, 2007

Appl. No.:

11/819034

Inventors:

Lance A. Visser - Dallas TX, US
Qi Ning - Dallas TX, US

Assignee:

Foundry Networks, Inc. - Santa Clara CA

International Classification:

H04L 12/56

US Classification:

370218, 370389, 370392

Abstract:

High availability BGP4 is based on redundant hardware as well as redundant software that replicates the RUN state of BGP4. There are two copies, respectively active and backup, of BGP4 running on two separate redundant hardware platforms. All BGP4 internal implementations apply various methods to replicate the running state of BGP4 independently of peer network routers. When this hardware or software fails on one redundant hardware platform, peer routers are unaware of the failure. Internally, based on duplicative states, the local router recovers from the failure and keeps the protocol running. During the recovery period, the local router can bring up a backup again. In the HA architecture, these activities are not detected by peer routers, such that there is no instability to the Internet backbone caused by BGP4 failure.

US Patent:

8467287, Jun 18, 2013

Filed:

Oct 29, 2008

Appl. No.:

12/260719

Inventors:

Lance A Visser - Dallas TX, US
Qi Ning - Dallas TX, US

Assignee:

Foundry Networks, LLC - San Jose CA

International Classification:

H04L 12/56

US Classification:

370218, 370389, 370392

Abstract:

High availability BGP4 is based on redundant hardware as well as redundant software that replicates the RUN state of BGP4. There are two copies, respectively active and backup, of BGP4 running on two separate redundant hardware platforms. All BGP4 internal implementations apply various methods to replicate the running state of BGP4 independently of peer network routers. When this hardware or software fails on one redundant hardware platform, peer routers are unaware of the failure. Internally, based on duplicative states, the local router recovers from the failure and keeps the protocol running. During the recovery period, the local router can bring up a backup again. In the HA architecture, these activities are not detected by peer routers, such that there is no instability to the Internet backbone caused by BGP4 failure.