| 摘要 |
PURPOSE:To eliminate early release of logical bus resource at fault and mis- transmission by changing an identifier of a logical communication path into an identifier not overlapped with other logical communication path identifier when a logical bus management device cuts off forcibly the said logical communication path due to a fault of physical communication path. CONSTITUTION:A logical path managing device 2 gives a number in order for the maximum logical path number's share set under the control of management ID just after the start to a logical path set request 5 from a communication main body 1. If a fault takes place in a physical communication line 4, the management device 2 cuts off forcibly the logical path 3 by its own judgement. The maximum logical path number ''16'' is added to the number given at first, all resources of the logival path 3 are released and cut-off notice 6' is transmitted to the communication main body 1. When a logical path set request exists from other communication main body 1, the changed path number is used. |
