Patent ID: 7852748
Filing Date: 2010-12-14
Classification: H04L

Abstract:
1. A method for providing Quality of Service (QoS) in a network after a network failure, the network comprising at least one primary tunnel and at least one backup tunnel protecting a segment of said primary tunnel, the method comprising: transmitting voice traffic received at a network device over said primary tunnel, wherein voice load control is applied to said voice traffic; receiving notification of a failure of a link or a node within said primary tunnel segment at the network device, wherein said failed link or node is no longer operable to transmit traffic in said primary tunnel segment and said failure results in a loss of connectivity over said primary tunnel segment; rerouting at the network device, all received packets assigned to said primary tunnel onto the backup tunnel; and marking at the network device, said rerouted packets to identify packets affected by the failure, for a time interval following the failure and before said voice load control adjusts for the failure; wherein said rerouted packets are subject to a different QoS policy than packets that have not been rerouted due to the failure.