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Communication apparatus, name resolution method and program

A technology of name and node equipment, applied in secure communication devices, data exchange through path configuration, digital transmission systems, etc., can solve the problem that complete link-local address information is difficult to be provided to other nodes, and IPv6 nodes are difficult to obtain other IPv6 nodes global addresses

Inactive Publication Date: 2005-10-05
KK TOSHIBA
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the meaning of the scopeid value is different for each node, it is difficult to provide complete information about the link-local address to other nodes
[0011] As mentioned above, conventional name resolution methods have the problem that it is difficult for IPv6 nodes to obtain the global addresses of other IPv6 nodes

Method used

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  • Communication apparatus, name resolution method and program
  • Communication apparatus, name resolution method and program
  • Communication apparatus, name resolution method and program

Examples

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Embodiment Construction

[0020] Embodiments of the present invention are described below with reference to the drawings.

[0021] 1 illustrates an example of the structure of main parts of an IPv6 node (communication device) utilizing the name resolution method of the present invention, the main parts including an address request unit 1, an address response unit 2, an address determination unit 3, and an address conversion unit 4. , transceiver unit 5 and storage unit 6 . Here, an IPv6 node is a communication device that communicates using IPv6.

[0022] The address requesting unit 1 generates an ICMPv6 request message (NI-query) to inquire (demand) a name (eg, host name, domain name, and FQDN) to other IPv6 nodes in the same network.

[0023] The address response unit 2 generates an IMCPv6 response message (NI-reply) to the NI-query transmitted from other IPv6 nodes.

[0024] The address determining unit 3 checks whether to obtain the global address or the link-local address of other IPv6 nodes acc...

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PUM

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Abstract

A communication apparatus having first address which is link local address of IPv6 and is used for communicating with node apparatus and second address which is global address acquires an IPv6 address corresponding to node apparatus, determines whether IPv6 address acquired is link local address or global address, based on prefix included in IPv6 address acquired, generates address candidate of node apparatus by combining interface ID included in IPv6 address acquired with prefix of second address, when IPv6 address acquired is determined to be link local address, generates NI-query message of ICMPv6 including address candidate as destination address, transmits NI-query message, receives NI-reply message of ICMPv6, and determines that address candidate is global address of node apparatus when NI-reply message received includes address candidate as sender address.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from Japanese Patent Application No. 2004-107599 filed on March 31, 2004, the entire contents of which are hereby incorporated by reference. technical field [0003] The invention relates to an IPv6 name resolution method and a communication device using the name resolution method. Background technique [0004] In recent years, the world's largest computer network, the Internet, has been widely used. By connecting to the Internet to use public information and services, and through external access via the Internet, information and services are provided to users, forming new computer services. New technologies related to the use of the Internet have been developed and spread. [0005] On the Internet, each computer has an identifier called an Internet Protocol (IP) address, and packets are exchanged based on the IP address. However, the IP address is digital, and lacks i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/70H04L12/46H04L29/06H04L29/12
CPCH04L29/12066H04L69/167H04L69/16H04L61/1511H04L29/06H04L61/4511H04L9/40
Inventor 石山政浩神明达哉
Owner KK TOSHIBA
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