| 摘要 |
PROBLEM TO BE SOLVED: To identify a fault location with a maintenance management function.SOLUTION: A transmission device includes a first port, a plurality of second ports, a distribution part, and a control part. The first port transmits/receives a frame to/from a first device. The plurality of second ports are bundled in the same link aggregation group and transmit/receive a frame to/from a second device with link aggregation. The distribution part distributes a transfer destination of the frame received by the first port. The control part monitors the state of the plurality of second ports, and when all of the plurality of second ports shows the fault state, extracts the second ports with port fault from among the plurality of second ports and controls the distribution part to distribute the frame to at least one of the extracted second ports. |
