Patent ID: 8995253
Filing Date: 2015-03-31
Classification: H04L

Abstract:
1. A ring protection method, comprising: detecting, by a first node in a ring, a link fault occurring in a link connected to a port of the first node; blocking, by the first node, the port connected to the link after detecting the link fault, and sending a fault alarm message to other nodes in the ring, wherein the fault alarm message contains an identifier that indicates the first node detecting the link fault; judging, by a second node which receives the fault alarm message, whether the identifier contained in the fault alarm message is different from a fault identifier record stored in the second node; and if the identifier contained in the fault alarm message is different from the fault identifier record stored in the second node, storing, by the second node which receives the fault alarm message, the identifier contained in the fault alarm message and clearing a forwarding table of the second node which receives the fault alarm message.