Method and apparatus for supporting the mobility of node using by layer 2/layer 3 addresses

It relates to the mobility of the network technology based on the node that does not have the mobility support. Mobility supporting method for a mobile node is performed in the access network and the access network-specific agent for connecting an Internet Protocol core network to integrate the access network according to the present invention, the address of the mobile node connected to the access point from the access point address information obtaining step for obtaining information; A location registration step of registering the location of the mobile node to the location of address information, and three-layer address information of the agent of the mobile node acquired in said Internet Protocol core network transmitted to the management apparatus for managing the access network; Agent address information transmission step of causing the mobile node to the mobile node sends a third-layer address information of the agent to the data packets transmitted to the agent; It includes; and a packet transmission and reception processing step of processing the address information and data packets transmitted and received between the mobile node and the corresponding node in consideration of the information registered in the management apparatus in the mobile node. This has the effect of providing high-speed mobility of the mobile node by.