Out of band data base synchronization for OSPF

Details Out of band data base synchronization for OSPF Out of band data base synchronization for OSPF

2001-10-04

2009-12-29

Trost, IV, William (Department: 2416)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S221000, C370S386000, C370S400000, C370S408000, C370S503000, C707S793000

Reexamination Certificate

active

07639680

ABSTRACT:
A method and apparatus resynchronizes a link state database (LSDB) of a non-stop forwarding (NSF) router with the LSDB of a neighboring router (“neighbor”) while maintaining an existing adjacency with the neighbor in a computer network. An out-of-band resynchronization process executes on the routers to essentially maintain the existing adjacency between the router and neighbor, rather than resetting that adjacency as defined by a conventional resynchronization approach. By keeping the adjacency “up” from the perspective of a routing protocol, such as the Open Shortest Path First routing protocol, the adjacency can be used for continued data traffic to and from the NSF router.

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