Patent ID: 8797845

Claim:
A simultaneous failure recovery method, the failure occurring in at least two links in an Ethernet ring network, the method comprising: transmitting a first message comprising a priority information of a first node after a failure recovery between the first node and a second node; comparing the priority information of the first node to a priority information of other node comprised in a received second message; if the priority of other node is higher than the priority of the first node, removing blocking of a port of the first node; a node adjacent to the links where the failures occur, multicasting a first failure recovery message comprising link priority (or node priority), when the links where the failures occur, are simultaneously recovered where the priority is determined solely from a larger value from among media access control (MAC) addresses of ports included in two nodes that are adjacent to the link where the failure occurs; and determining whether to remove blocking of the node based on the link priority (or the node priority) and a link priority (or a node priority) included in a second failure recovery message, when the node receives the second failure recovery message from other nodes.