IP ADDRESS MANAGEMENT SYSTEM, DHCP CONVERTER, IP ADDRESS MANAGEMENT METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To obtain an IP address management system in which CPE allows connection with a WAN line and acquisition of an IP address automatically when starting communication of user data, and to obtain a DHCP converter, and an IP address management method and a program.;SOLUTION: CPE 12 requests a DHCP server 11 to deliver an IP address, and obtains a DHCP offer containing a temporary IP address. WAN line connection request means 13d requests connection with a WAN line when data is sent from the CPE 12 toward the WAN line. Subsequently, the lease time of the IP address is updated, and while changing a MAC header of an IP packet other than the DHCP packet by a DHCP converter 103, user data is communicated between the CPE 12 and a WAN side DHCP server 104.;COPYRIGHT: (C)2013,JPO&INPIT