Patent ID: 6578088
Filing Date: 2003-06-10
Classification: H04L,H04W

Abstract:
An automatic address distributing system comprising:an address distributing server connected to a network system for automatically distributing network information including address information to terminals connected to said network system and avoiding distribution of a duplicate address of an address already used in said network system; and a mobility agent for monitoring and supporting a movement of a terminal from said network system to another network system, wherein said address distributing server comprises: a duplicate-address examining apparatus for automatically examining addresses already used by said terminals prior to distribution of an address, an in-use-address storing apparatus for storing examination results produced by said duplicate-address examining apparatus, and a mobility agent storing apparatus for storing information of at least one mobility agent connected to said network system, wherein, if said mobility agent storing apparatus holds information of at least one mobility agent connected to said network system, said duplicate-address examining apparatus makes an inquiry to said at least one mobility agent, and obtains an address used by at least one terminal having moved to another network system from said at least one mobility agent, wherein said network system includes a name server for controlling and converting relations between terminal addresses and host names, and wherein said duplicate-address examining apparatus examines addresses used by said terminals connected to said network system by making an inquiry to said name server.