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Internet protocol version 4 (IPv4)/internet protocol version 6 (IPv6) translation method facing to asymmetrical digital subscriber loop (ADSL) of network operator

A digital user loop, asymmetric technology, applied in the field of computer networks

Active Publication Date: 2011-08-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, IVI technology must use stateful DHCPv6 to configure the IPv6 address of the user computer, which is generally not / 64, so it has certain limitations when used for asymmetric digital subscriber line users

Method used

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  • Internet protocol version 4 (IPv4)/internet protocol version 6 (IPv6) translation method facing to asymmetrical digital subscriber loop (ADSL) of network operator
  • Internet protocol version 4 (IPv4)/internet protocol version 6 (IPv6) translation method facing to asymmetrical digital subscriber loop (ADSL) of network operator
  • Internet protocol version 4 (IPv4)/internet protocol version 6 (IPv6) translation method facing to asymmetrical digital subscriber loop (ADSL) of network operator

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Embodiment Construction

[0058] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0059] The key technology of the method of the present invention includes: addressing format of single IPv6 prefix for asymmetric digital subscriber line users, port mapping of shared public IPv4 address and IPv4 / IPv6 packet translation method using two-level translator.

[0060] Such as figure 1 As shown, the present invention performs 1: N stateless IPv4 / IPv6 translation on the Broadband Access Server (BRAS) side on the basis of stateless address translation and protocol translation, and distributes a single IPv6 prefix to each user. The prefix contains not only an ordinary IPv6 address for communicating with the IPv6 Internet, but also a special IPv6 address embedded w...

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Abstract

The invention discloses an internet protocol version 4 (IPv4) / internet protocol version 6 (IPv6) translation method facing to the asymmetrical digital subscriber loop (ADSL) of a network operator, relating to the technical field of computer networks. In the method, a broadband remote access server (BRAS) side is subjected to 1:N stateless IPv4 / IPv6 translation, and the home gateway connected with users are respectively allocated with a single IPv6 / 64 prefix, wherein the prefix contains a common IPv6 address and a special IPv6 address of an embedded shared public IPv4 address as well; the user home gateways carry out the IPv4 / IPv6 translation including port conflict detection on the special IPv6 address; the home gateways allocate the shared public IPv4 address and the common IPv6 address to computers of users, so that the users can share scarce public IPv4 address, launch end-to-end communication with global IPv4 internet in two directions without application layer gateways, and can carry out full function communication with the global IPv6 internet.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to an IPv4 / IPv6 translation method oriented to an operator's asymmetric digital subscriber loop. Background technique [0002] The Internet has become the most important information infrastructure in the world, but the addressing range of IPv4, the fourth version of the network protocol widely used on the Internet, is only 2 32 , that is, 4.3 billion addresses, and the current IPv4 addresses are about to be allocated. [0003] At present, the absolute number of Internet users in China has become the first in the world, but the penetration rate of the Internet is only 23%, far below the level of developed countries (70%). At the same time, each Chinese Internet user has only 0.6 IPv4 addresses on average. Therefore, for China, IPv4 addresses cannot meet the demand. This problem is very serious for India and other Asian countries and African countries. [0004] In order ...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/56H04L45/741
Inventor 包丛笑李星翟宇韩国梁
Owner TSINGHUA UNIV
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