Patent ID: 7639680
Filing Date: 2009-12-29
Classification: H04L,Y10S

Abstract:
1. A method for operating a router, comprising: transmitting a first packet to at least one neighbor router, the first packet informing the at least one neighbor router that the router is a non-stop forwarding (NSF) router and that the router is going to execute an out-of-band (OOB) resynchronization process that maintains an existing adjacency between the router and the at least one neighbor router at all times during the OOB resynchronization; executing the OOB resynchronization process on the router while maintaining the existing adjacency with the at least one neighbor router by transmitting one or more second packets; providing a LSDB resynchronization (LR) bit in a link-local signaling (LLS) data block; attaching the LLS data block to the first packet; and announcing a capability of the NSF router and the neighboring router to support the OOB resynchronization using a LR bit of the LLS data block.