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DNS server, DHCP server, terminal and communication system

  • US 20010023459A1
  • Filed: 02/28/2001
  • Published: 09/20/2001
  • Est. Priority Date: 03/14/2000
  • Status: Active Grant
First Claim
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1. A DNS server to dynamically assign an IP address only to a terminal which is now conducting communications, the DNS server comprising:

  • means for holding a table in which FQDNs of terminals managed by the DNS server are registered in advance and the list of IP addresses to be broad cast to the outside;

    address conversion means for converting one of the IP addresses in the list to be broad cast to the outside into one of an address of a data link layer and a network layer in the sense of OSI communications between the terminals managed by the DNS server, when the DNS server receives an inquiry of the FQDN; and

    registration means for registering the IP addresses in the table in correspondence with the FQDNs, wherein the terminal required to receive communication can receive it.

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