Patent ID: 7710863
Filing Date: 2010-05-04
Classification: H04L,Y10T

Abstract:
1. A relay device in a network including paths each extending from a start node to an end node, each of the paths having a path identifier uniquely specifying the path, the relay device being installed in a parting within the network in order to detect each of the nodes on the path without depending on the path identifier, the relay device comprising: a receiving unit to receive a message used for detecting each of the nodes on the path; a path determining unit to determine a path presently being used for transferring data between a working path specified by the path identifier included in the message and a recovery path of the working path; an address adding unit to add an address assigned to the relay device to information contained in the message received by the receiving unit, the information including an address assigned to another relay device that has relayed the message; and a transmitting unit to transmit the message including the information with the address assigned to the relay device and the address assigned to the another relay device that has relayed the message to the determined path.