METHOD AND APPARATUS FOR FAULT HANDLING IN RING TOPOLOGY NETWORK AND ROUTING DEVICE

摘要

Embodiments of the present invention provide a method and an apparatus for fault handling in a ring topology network and a routing device, so as to rapidly advertise and deliver a fault to nodes in the ring topology network. The method comprises: any neighboring nodes R1 and R2 in the ring topology network detecting whether a fault occurs to data forwarding between the node R1 and/or the node R2; and if a fault occurs to data forwarding between the node R1 and the node R2, the node R1 and/or the node R2 delivering a fault message to a respective adjacent next node along a normal link until the fault message reaches a convergence node Rc1 and a convergence node Rc2 in the ring topology network. Through the method for fault handling in a ring topology network that is provided by the embodiments of the present invention, a fault message can be advertised hop by hop rapidly in the ring topology network, and all nodes in the ring topology network can learn of the fault rapidly, so that the requirement for starting protection switching in a short time when the ring topology network is faulty is met.