High availability packet forward apparatus and method

Details High availability packet forward apparatus and method High availability packet forward apparatus and method

2007-04-17

2007-04-17

Harper, Kevin C. (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S241000, C370S217000, C714S001000, C714S047300

Reexamination Certificate

active

10025496

ABSTRACT:
A high availability packet forwarding router for an internet protocol (IP) network, includes two control processors, one or more service termination cards (STCs) with forwarding information bases (FIBs), and a packet forwarding engine. The two processors run asynchronously in a master/standby relationship. Integrity of processes running on the control processors is monitored and the forwarding engine forwards packets according to a FIB maintained by an in-service one of the control processors. Hitless failover and hitless software upgrades are supported.

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The Avici SSR™ Stackable Switch Router, online product brochure downloaded on Dec. 19, 2001 from the web site of Avici Systems Inc., http://www.avici.com.

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