Technique for resynchronizing LSDB in OSPF after a software...

Details Technique for resynchronizing LSDB in OSPF after a software... Technique for resynchronizing LSDB in OSPF after a software...

2005-09-27

2005-09-27

Pham, Chi (Department: 2667)

Multiplex communications

Pathfinding or routing

Through a circuit switch

Reexamination Certificate

active

06950427

ABSTRACT:
A technique resynchronizes a link state database (LSDB) of a non-stop forwarding (NSF) router with the LSDB of a neighbor while maintaining an existing adjacency with the neighbor over a network interface of the router. According to the technique, the NSF router “pretends” to be a new router by establishing a “fake” adjacency with the neighbor over the same interface used for the existing adjacency with the neighbor. Believing that the fake adjacency is an adjacency established with the new router, the neighbor does not destroy the existing adjacency with the NSF router. This allows the NSF router to continue receiving and forwarding data traffic over the existing adjacency that was established before, e.g., reloading of routing protocol software on the router.

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