Patent ID: 6865149
Filing Date: 2005-03-08
Classification: H04L

Abstract:
1. A method performed by a communication network, said network comprising nodes, interconnected by communication links, at least some of aid nodes being connected in a ring by said links, said method comprising: automatically testing the, quality of links between nodes; detecting by a first node that one or more first link do not meet quality threshold; transmitting information from aid first node to other nodes to identify said one or more first links, wherein a status of a link is assigned a quality value, said step of transmitting comprising: revising a routing table in at least some of said nodes to reroute traffic, if appropriate, such that the rerouted traffic does not transverse said one or more first links, due to said one or more first links being faulty; and routing traffic by source node to a destination node, based on a revised routing table at said source node, so as to route said traffic in a direction around ring different from a direction that the traffic would have traveled to said destination node had said one or more first links not been faulty.