Patent ID: 6195329
Filing Date: 2001-02-27
Classification: H04L,H04Q

Abstract:
A trouble releasing system for an ATM logic IP subnetwork, comprising:a logic IP subnetwork composed of at least one ATM switch and a plurality ATM terminals;an NHRP server for managing a pair of an ATM address and an IP address of said ATM switch or said ATM terminals which are present in said logic IP network;an NHRP client for communicating with said NHRP server; anda standby NHRP server for performing server operation in place of the currently used NHRP server when said currently used NHRP server has a trouble; and wherein,when said currently used NHRP server which performs address solution in said logic IP subnetwork stops the server operation because of a trouble thereof and said standby NHRP server issues an instruction for change to a server operation, said NHRP client retrieves an address of said standby NHRP server registered in advance and causes communication of a request for address solution to be switchably performed by said standby NHRP server.