Packet transfer control device and mobile node
AssigneePanasonic Corporation
InventorsKeigo Aso, Jun Hirano
Life of this patent
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Abstract
Disclosed is technique for avoiding packet reflection between home agents. According to the technique, a MN 10 includes a home address (HoA1) assigned thereto from a home network 12, and a home address (HoA2) assigned thereto from a home network 14. CoA is further acquired from a foreign network 15. Then, the MN uses the home addresses as care-of addresses, and performs binding-update including HoA1-HoA2 for the HA 12 and binding-update including HoA2-HoA1 as well as HoA2-CoA for the HA 14. A packet transmitted from a CN 16 to HoA1 is encapsulated by the HA 12 and transferred to the HA 14. The HA 14 refers to a source address of the received encapsulated packet and selects CoA as a transfer destination address instead of HoA2 having the same prefix.
Claims6
A packet transfer control device that controls packet transfer in a first home agent belonging to a first home network, comprising:
- binding information management means that manages an address of a mobile node having, in addition to a first home address assigned from the first home network, a second home address assigned from a second home network different from the first home network, and holds binding information in which at least the second home address is associated with as a care-of address of the first home address;
- and
- transfer destination selection control means that, when an encapsulated packet including the first home address as a destination address is received from a second home agent belonging to the second home network, controls so that the second home address is not selected as a transfer destination address of the encapsulated packet when the encapsulated packet is to be transferred.
A mobile node with a first home address assigned by a first home network as well as a second home address assigned by a second home network different from the first home network, comprising:
- first binding information notification means that notifies a first home agent belonging to the first home network of binding information in which at least the second home address is associated with as a care-of address of the first home address;
- second binding information notification means that notifies a second home agent belonging to the second home network of binding information in which at least the first home address is associated with as a care-of address of the second home address;
- first home agent information notification means that notifies the first home agent of home agent information, the home agent information at least including an address of the second home agent or information that specifies the address of the second home agent;
- and
- second home agent information notification means that notifies the second home agent of home agent information, the home agent information at least including an address of the first home agent or information that specifies the address of the first home agent.
Dependencies are inferred from the claim text.