Patent ID: 6266728
Filing Date: 2001-07-24
Classification: H04L

Abstract:
A network system comprising:a plurality of buses formed by connecting a plurality of nodes to one another through a common communication-control signal line; anda bridge for assigning identification numbers to a plurality of buses in a predetermined range among the plurality of the buses which are connected to constitute a tree structure,wherein the bridge previously reserves identification numbers of a number which is larger than a number of the identification numbers which assigned to the tree structure having a top thereof formed by a bus of the plurality of buses which includes the bridge, and when a re-assignment demand of the identification number is made from an inside portion of ones of the plurality of buses forming a lower level of the tree structure because of change in a state of the connection of the plurality of buses, the re-assignment demand is not communicated to an upper level of the tree structure if the identification number is not larger than the number of the identification numbers which have previously been reserved so that the re-assignment of the identification number is performed by the lower level of the tree structure.