Address resolution method and address resolution communication system
First Claim
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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Accused Products
Abstract
In an address resolution method for an inter-working function (IWF) for mutually connecting mobile packet terminals (MS) and a radio system accommodating the packet terminals (MS) and a packet network having a switch node, when the packet terminal (MS) is handed over, the packet terminal (MS) transmits a kind of “address resolution protocol (ARP): see Internet Engineering Task Force Document RFC826”, the inter-working function (IWF) transmits the ARP packet to the packet network and the switch node renews an address management table on the basis of the packet received.
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Citations
15 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An address resolution communication system comprising a plurality of moving mobile packet terminals, a connection oriented network which accommodates the plural mobile packet terminals and supplies a connection oriented communication, a connectionless network having a switch node and an inter-working function for mutually connecting the respective networks to each other, the address resolution communication system comprising:
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the inter-working function for receiving data containing a Gratuitous-ARP packet which is of an address resolution protocol (ARP) from one of the mobile packet terminals when the one mobile packet terminal is handed over, and transmitting the Gratuitous-ARP packet to the connectionless network to make the switch node receive the Gratuitous-ARP packet; and
the switch node for renewing a physical address table provided in the switch node on the basis of the content of the Gratuitous ARP packet to specify the interworking function at a handover destination of the mobile packet terminal. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification