APPARATUS AND METHOD FOR AUTOMATICALLY ASSIGNING VIRTUAL ADDRESS TO DUPLICATE ADDRESS NODE

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and a method for generating a new virtual interface ID in order to automatically set a virtual address to each duplicate address. SOLUTION: A duplicate address search message transmitting part generates and transmits a duplicate address search message to an arbitrary node belonging to a subnet to which nodes to which addresses are not set to belong. A duplicate address response message receiving part receives a response message to the duplicate address search message from the node which receives the duplicate address search message and when the response message to the duplicate address search message indicates presence of the duplicate address, a virtual address assign message transmitting part generates and transmits a virtual address assign message to an arbitrary router belonging to the subnet, and a virtual address response message receiving part receives a response message to the virtual address assign message from the router which receives the virtual address assign message. COPYRIGHT: (C)2004,JPO