Out of band data base synchronization for OSPF
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United States of America Patent
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Dec 29, 2009
Grant Date -
N/A
app pub date -
Oct 4, 2001
filing date -
Oct 4, 2001
priority date (Note) -
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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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