Restoration mechanism for network topologiesUS2005240797A1

摘要

A method of restoring a failure in a network topology. A first node is provided that has a first access link connected to a first port group of a first customer and a first network link connected to a first active router. A second node has a first access link connected to the first port group of the first customer and a first network link connected to a second stand�by router. The first node has a second network link connected to the second node via a second network link of the second node. If the first access link of the first node or the first node itself fails, the second node switches to the active state. If the second network link of the first node fails, the second node switches to the active state. In this way the traffic will be forward to the first router and/or the second router.