APPARATUS AND METHOD FOR AUTOMATICALLY ALLOCATING VIRTUAL ADDRESS TO DUPLICATED ADDRESS NODE

摘要

PURPOSE: An apparatus and method for automatically allocating a virtual address to a duplicated address node is provided to create a new virtual interface ID in order to automatically configure a virtual address for each duplicated address. CONSTITUTION: An apparatus for automatically allocating a virtual address to a duplicated address node in an address non-configured node(11) consists of a duplicated address search message transmitting part(111), a duplicated address response message receiving part(112), a virtual address allocation message transmitting part(113), a virtual address response message receiving part(114), and a virtual address configuration part(115). The duplicated address search message transmitting part(111) creates a duplicated address search message and transmits it to a tentative node belonging to the subnet to which the address non-configured node(11) belongs. The duplicated address response message receiving part(112) receives a response message from the node receiving the duplicated address search message. The virtual address allocation message transmitting part(113) creates and transmits a virtual address allocation message to a tentative router belonging to the subnet in case that the response message indicates that there is a duplicated address. The virtual address response message receiving part(114) receives a response message from the router receiving the virtual address allocation message. If the address non-configured node(11) receives the response message for the virtual address allocation message, the virtual address configuration part(115) configures a virtual address, contained in the response message, as the address of the address non-configured node(11).