Patent ID: 7426213

Claim:
A mobile Internet Protocol service provider system for providing a mobile node access to a network and for enabling the mobile node to communicate with a host on the network, comprising: a first entity comprising a mobile IP foreign registration agent for transmitting a mobile IP registration request message associated with the mobile node to a mobile IP home agent and receiving a registration reply message from the mobile IP home agent; and a second entity, operationally separate from the first entity, comprising a mobile IP foreign tunneling agent associated with the mobile IP foreign registration agent, the mobile IP foreign tunneling agent receiving data traffic from the mobile node and directing the data traffic to the mobile IP home agent, wherein the mobile IP registration request message is received and responded to by the mobile IP home agent in accordance with a mobile IP protocol and wherein at least one of the mobile IP foreign registration agent and the mobile IP foreign tunneling agent comprises a network access server that terminates a point-to-point protocol communication link with the mobile node.