N+1 REDUNDANT CONFIGURATION DEVICE SWITCHING CONTROLLER

摘要

PROBLEM TO BE SOLVED: To provide an N+1 redundant configuration device switching controller which eliminates the need of a central control part for device switching control and is superior in extensibility and quickness of switching. SOLUTION: An N+1 redundant configuration device switching controller 1 is provided with devices 101A to 101D operating in a current state or a standby state and selectors 112A to 112D. The devices 101A to 101D are respectively provided with; upstream memories 141A1 to 141D1 and downstream memories 141A2 to 141D2 which have CONFIG information held therein; a fault processing means which switches the devices to the standby state in the case that the devices are faulty; an upstream memory selection processing means which operates in the current state by CONFIG information held in the upstream memories 141A1 to 141D1 when informed of selection indications of the upstream memories 141A1 to 141D1; and a downstream memory selection processing means which operates in the current state by CONFIG information held in the downstream memories 141A2 to 141D2 when being informed of selection indications of the downstream memories 141A2 to 141D2. COPYRIGHT: (C)2005,JPO&NCIPI