The LAN control control equipment, the packet transmission expedient which transmits the driver, the switching hub, and the LAN control control equipment automatic

摘要

PROBLEM TO BE SOLVED: To provide a system capable of communicating with another computer via a network with a computer such as a server or the like set as a non-stop.;SOLUTION: A LAN controller 1 transmits a test probe to a SWHUB52. If a LAN-1 is normal, the SW-HUB returns the test probe to the controller 1, but if the LAN-1 is abnormal, the SW-HUB does not return the test probe to the controller 1. When this is detected from the fact that the test probe is not returned from the controller 1 for a predetermined time, an abnormal effect, a MAC address and the like are informed to a driver. Then, the LAN controller 2 having higher priority order of the waiting LAN controllers 2, 3 succeeds the MAC address or the like and restarts the communication via a LAN-2.;COPYRIGHT: (C)2002,JPO