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Address resolution method and address resolution communication system

  • US 6,847,621 B1
  • Filed: 05/23/2000
  • Issued: 01/25/2005
  • Est. Priority Date: 05/25/1999
  • Status: Expired due to Fees
First Claim
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1. An address resolution method for a communication system comprising a plurality of mobile packet terminals, a connection oriented network which accommodates the mobile packet terminals and supplies a connection oriented communication, a connectionless network having a switch node and an inter-working device for mutually connecting the respective networks, comprising the steps of:

  • receiving data containing a Gratuitous-ARP packet which is of an address resolution protocol (ARP), from one of the mobile packet terminals by way of the inter-working device, in a case when the one mobile packet terminal is handed over to a handover destination on the connection oriented network;

    transmitting the packet to the connectionless network by way of the inter-working device;

    making the switch node receive the packet by way of the inter-working device;

    renewing a physical address management table provided in the switch node on the basis of the content of the packet on the switch node; and

    determining another inter-working device at the handover destination of the one mobile packet terminal on the switch node.

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