| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the time necessary for detecting a failure on a path or a failure of a device on the other end of the line. <P>SOLUTION: In a path failure detection method, a layer 2 switch 10 stores a learning table in which an address of a transmission destination server 30 is associated with an aging timer value showing the time elapsed after a frame is finally received from the transmission destination server 30. In addition, when receiving the frame from a transmission source server 20, the layer 2 switch 10 acquires an aging timer value corresponding to a destination address set in the received frame from the learning table. The layer 2 switch 10 further transmits an aging timer value notification frame in which the acquired aging timer value is set to the transmission source server 20. Then, the transmission source server 20 receives the aging timer value notification frame from the layer 2 switch 10, and detects a failure on the path between the transmission destination server 30 and the layer 2 switch 10, based on the aging timer value set in the received aging timer value notification frame. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
