Patent ID: 7693047
Filing Date: 2010-04-06
Classification: H04L

Abstract:
1. A method for rerouting selected types of network traffic in a computer network, the method comprising: detecting a node or link failure at a first edge device in the computer network, the first edge device coupling the computer network to a neighboring site; incorporating, in response to detecting the node or link failure at the first edge device, a predetermined interior gateway protocol (IGP) label value into a data packet addressed to the first edge device, the predetermined IGP label value indicating that the packet is being rerouted to a second edge device, the second edge device coupling the computer network to the neighboring site; after the incorporating, rerouting the data packet addressed to the first edge device to the second edge device in the computer network; determining, at the second edge device, whether the rerouted data packet corresponds to at least one of the selected types of network traffic; and forwarding the rerouted packet at the second edge device, in response to determining that the rerouted data packet corresponds to at least one of the selected types of network traffic.