Patent ID: 9197583
Filing Date: 2015-11-24
Classification: H04L

Abstract:
1. A method performed at a routing device, the method comprising: identifying a first system identifier associated with a multi-homed routing device linked to the routing device, the first system identifier identifying a redundancy group to provide redundant links for the multi-homed device; receiving a second system identifier from a remote routing device by way of a routing protocol in a domain that includes the routing device and the remote routing device; comparing the first system identifier with the second system identifier; establishing an inter-chassis control plane channel session with the remote routing device based on a match of the first system identifier with the second system identifier, the match indicating that the routing device and the remote routing device are each linked to the multi-homed routing device and that the routing device and the remote routing device are both part of the redundancy group; synchronizing with the remote routing device by way of the inter-chassis control plane channel session to identify a state of a link from the routing device to the multi-homed routing device; and advertising the state of the link by way of the routing protocol in the domain that includes the routing device and the remote routing device.