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Method and equipment for forwarding datagram based on NAT 64 (Network Address Translation 64)

A technology of data message and forwarding method, applied in the field of computer network, can solve problems such as performance degradation, low search efficiency, excessive system resource occupation, etc., to achieve the effect of improving performance

Inactive Publication Date: 2014-03-12
OPZOON TECH
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Problems solved by technology

However, in the current NAT64 implementation, the forwarding device mainly realizes the network address and protocol conversion by traversing the address mapping table. In the case of a large number of users, the search efficiency is low, the system resources are too large, and the performance will be serious. decline

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  • Method and equipment for forwarding datagram based on NAT 64 (Network Address Translation 64)
  • Method and equipment for forwarding datagram based on NAT 64 (Network Address Translation 64)
  • Method and equipment for forwarding datagram based on NAT 64 (Network Address Translation 64)

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0040] To achieve the purpose of the invention, the invention first creates a hybrid connection. The hybrid connection includes two continuous address spaces for respectively storing an IPv4 quintuple information and an IPv6 quintuple information.

[0041] figure 1 It is the data structure diagram of the hybrid connection of the present invention, and the blank space includes the nodes of the linked list, and some infor...

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Abstract

The invention provides a method and equipment for forwarding a datagram based on NAT 64 (Network Address Translation 64). The method and the equipment are used for solving the problems in the prior art that most of the content of the Internet is available to IPv4 (Internet Protocol version 4) only, the condition that IPv6 (Internet Protocol version 6) terminal users often need to access IPv4 content is unavoidable, the conversion of the network addresses and protocols of the IPv6 and IPv4 under the protocols of TCP (transmission control protocol), UDP (User Datagram Protocol) and ICMP (Internet Control Message Protocol) is realized by a NAT 64 technology designed by an IETF (Internet Engineering Task Force), however, forwarding equipment realizes the conversion of the network addresses and protocols mainly through traversing an address mapping table in a current NAT 64 implementation mode, and in the case of a large number of users, the searching efficiency is low, the system resource occupation is too large, and then the performance can be lowered seriously. According to the method and the equipment, the efficiency of converted address searching during the intercommunication between the IPv4 and the IPv6 is greatly increased through establishing an IPv4 and IPv6 mixed connection table and searching in a Hash manner, and then, the overall performance is improved.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a NAT64-based forwarding method and forwarding equipment. Background technique [0002] At present, the IP protocol widely used in the Internet is the fourth version, namely IPv4. However, with the rapid development of Internet applications, the number of devices connected to the network is increasing rapidly. The biggest problem of IPv4 is the limited network address resources, which seriously restricts the application and development of the Internet in the future. In such an environment, IPv6 emerges as the times require. IPv6 is the abbreviation of "Internet Protocol Version 6". It is the next-generation IP protocol designed by IETF (Internet Engineering Task Force) to replace the current version of IP protocol (IPv4). IPv6 not only solves the problem of the number of network address resources, but also clears the way for devices other than computers to connect to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/743H04L12/749H04L29/12H04L45/741
Inventor 朱志博
Owner OPZOON TECH
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