Patent ID: 8149690

Claim:
A method of operating a link state routing protocol (LSRP) on a packet router, the method comprising: receiving an erroneous link state request (LSR) from a neighbor router, the erroneous LSR requesting from the LSRP a link state update for link state data that the packet router will not provide to the neighbor router; determining that the packet router and neighbor router can be adjacent without the packet router providing the link state data, comprises tracking erroneous LSRs from the neighbor router and allowing the present adjacency state with the neighbor router to continue until the tracked erroneous LSRs fail an allowable erroneous LSR profile; and sending, to the neighbor router as a response to the erroneous LSR, a link state update that does not contain valid link state data but allows a present adjacency state between the packet router and the neighbor router to continue.