| 摘要 |
PROBLEM TO BE SOLVED: To implement improvement of failure resistance by limiting a path in relaying a frame even when a failure occurs, in a multiple chassis link aggregation device.SOLUTION: Each of switch devices SW1, SW2 has a relay condition which specifies prohibition of a predetermined relay path. When no link failure exists in each MLAG, each of the SW1, SW2 prohibits a frame received by a bridge port Pb from being transferred from each MLAG. When a link failure exists in a port P2 (MLAG2) of the SW1, the SW2 permits the frame received by the Pb to be transferred from a P2. In this case, the SW1 transfers a frame FL received by a port P1 to the SW2 after adding a port identifier showing a port which has received the FL to the FL when destination port of the FL includes the MLAG2, and the SW2 discriminates the relay condition by using the port identifier and prohibits a relay path satisfying the condition. |
