Patent ID: 7796537
Filing Date: 2010-09-14
Classification: H04L

Abstract:
1. A method comprising: receiving from a first neighboring router an open shortest path first (OSPF) first link state initiation (HELLO) message that requests a recipient node to send a unique identifier for a link state routing protocol; in response to receiving the first HELLO message, sending a first response message that includes data that indicates a first identifier from an identifier pool that contains for a local node a plurality of network identifiers that are unique among all nodes in a network that uses the link state routing protocol; receiving from a different second neighboring router a second HELLO message; and in response to receiving the second HELLO message, sending a second response message that includes data that indicates a different second identifier from the identifier pool, wherein a first link state update message is provided to the second neighboring router and includes no adjacency information between the first neighboring router and the recipient node, and wherein a second link state update message is provided to the first neighboring router and includes no adjacency information between the second neighboring router and the recipient node, and wherein the first neighboring router, the second neighboring router, and the recipient node are configured to connect to a same local area network and a same domain.