Bus management method, bus network using such bus management method and information provider medium

摘要

A management node can recognize the disconnection of a target bus at a high efficiency. A bus network (10) may be arranged such that buses (21 to 26) may be connected by bridges (31 to 35). In the setting in which a management node (41) may receive a disconnection report, a first step may be executed, whereafter second and third steps may be repeated properly. In the first step, the management node (41) may detect a bridge portal existing in somewhere of a path to a target bus, and may transmit a disconnection report request to the bridge portal. In the second step, the bridge portal may transmit a disconnection report request to a bridge portal (proxy portal) connected thereto. In the third step, the proxy portal may detect the bridge portal existing in the path to the target bus, and may transmit a disconnection report request to the detected bridge portal. The proxy portal may detect the disconnection of the target bus by detecting the disconnection of the detected bridge portal, and may report such disconnection of the target bus to the management node.