US 2003/0076845 A1Published application

Data transfer system using mobile IP

AssigneeKddi Corporation

InventorsHidetoshi Yokota, Toru Hasegawa

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Abstract

According to the present invention, there is provided a data transfer system using mobile IP in which transfer interruption is not caused even if an MH moves between FNs. A MAC bridge connected between FNs includes means responsive to an address registration request issued by an AP, for storing a combination of a MAC address of the MH and a receiving port, in a filtering DB; means for registering a relation of association of an address of a terminal accommodated in an FN with a connection port of an FN in which the terminal is accommodated, in the filtering DB; and means for referring to the filtering DB on the basis of the destination address of a frame input to each port, and transferring the frame to a predetermined port on the basis of a relation of association of the address with a port identifier.

Claims4

Dependent claims

A data transfer system using mobile IP, comprising:

a MAC bridge having a plurality of ports to which different foreign networks(FN) are respectively connected;
and
a filtering data base(DB) for the MAC bridge, wherein the MAC bridge comprises:
means for storing a MAC address of the mobile host(MH) and an identifier of a port to which the foreign network(FN) is connected, in the filtering data base(DB), responsive to a MAC address registration request issued by an AP in a foreign network(FN);
means for registering a relation of association of a MAC address of a terminal accommodated in an FN with an identifier of a port to which the foreign network(FN) is connected, in the filtering data base(DB), on the basis of an agent advertisement(AA) message transmitted from a foreign agent (FA) accommodated in each foreign network(FN);
and
means for referring to the filtering data base(DB) on the basis of the destination MAC address of a frame input to each port, and transferring the frame to the port on the basis of the already registered relation of association of the address with a port identifier.

4 more elements

Dependencies are inferred from the claim text.