Packet relay system

Abstract

PURPOSE: To avoid interruption of communication on the occurrence of a network fault by adopting the system in which communication through the use of a logical fixed communication line is implemented normally and only an in-network control packet to set a new logic fixed communication line is relayed by each station corresponding to a destination station on the occurrence of a network fault. CONSTITUTION: When the connection state of the network is changed due to a fault of packet exchange stations 4-A-4-E or the like or traffic is fluctuated, each station selects an optimum relay line corresponding to a destination station with respect to an in-network control packet outgoing incoming station relay circuit retrieval packet 1 to set a new logic fixed communication line and the packet is relayed up to the destination station. Thus, a new logical fixed communication line is set and it is not required to grasp all paths among station in advance regardless of complicated network constitution and a proper path is set in response to the connection state of the network at that time and the interruption of communication is avoided. COPYRIGHT: (C)1992,JPO&Japio

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    JP-2007067690-AMarch 15, 2007Fujitsu Ltd, 富士通株式会社Optimum path selecting system