Patent ID: 7423998

Claim:
A method for managing a mobile Internet protocol (IP) in a mobile network comprising a plurality of hosts, the method comprising the steps of: (a) periodically receiving an agent information message from one of an agent on a network, and checking a connection to a home network or a foreign network; (b) if a connection to the home network is determined based on the agent information message received in step (a), registering a global IP address received from the agent of the home network and local IP addresses set at the hosts, and communicating with the home network through conversion between the registered global IP address and each of the registered local IP addresses; and (c) if a connection to the foreign network is determined based on the agent information message received in step (a), receiving a temporary IP address from the agent of the foreign network, registering the temporary IP address with the local IP addresses set at the hosts, and communicating with the foreign network through conversion between the registered temporary IP address and each of the registered local IP addresses.