| 摘要 |
PROBLEM TO BE SOLVED: To provide a network relay device, a network, and a network maintenance and operation method, capable of appropriately performing the network maintenance and operation even when transmitting/receiving OAM frames between mutually different standard networks. SOLUTION: The network relay device 1 that is a network relay device 1 constituting a network includes a frame determination unit 20 for referencing to a protocol identifier contained in a frame from an external network relay device constituting another standard network different from the network, to determine whether or not the frame contains a confirmation frame for network operation, administration or maintenance, and a processing unit for performing operation, administration, or maintenance on the frame, when the frame determination unit 20 determines that the frame is the confirmation frame. COPYRIGHT: (C)2011,JPO&INPIT
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