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Method for utilizing network processor to translate the IPv4/IPv6 network protocol

A network processor and protocol conversion technology, applied in data exchange network, digital transmission system, electrical components, etc., can solve the problems of high manufacturing process, inability to perform version update and function upgrade, and achieve the effect of speeding up the forwarding speed

Inactive Publication Date: 2007-12-12
上海亿人通信终端有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ASIC provides fast processing capabilities, its flexibility is far from keeping up with the rapid changes in network protocols and standards. A typical ASIC requires a development cycle of 1 to 3 years, and cannot perform version updates and function upgrades. Need is also higher

Method used

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  • Method for utilizing network processor to translate the IPv4/IPv6 network protocol
  • Method for utilizing network processor to translate the IPv4/IPv6 network protocol

Examples

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Embodiment Construction

[0048] The embodiments of the present invention will be further described below in conjunction with the drawings and embodiments.

[0049] In the process of IPv4 / IPv6 network protocol conversion, four types of packets need to be processed, they are packet session header from IPv4 host to IPv6 host, packet session header from IPv6 host to IPv4 host, DNS packet and subsequent packets of established sessions.

[0050] Fig. 1 shows a flowchart of IPv6 packet processing. Please refer to Fig. 1, when the host in the IPv6 subnet wants to actively communicate with the host in the IPv4 subnet, the IPv6 host first sends a message, which is called a new session first packet. After the NP-1c network processor receives the first packet of the session, it first verifies the correctness; table, etc.) to obtain the specific route conversion information of the message; then, the most important thing is to record all the route conversion information in the session table to realize state maint...

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Abstract

The invention discloses a method of realizing IPv4 / IPv6 network protocol transmission using network processor; it can fulfill quick transmission of report to make IPv4 host computer and IPv6 host computer communicate freely. The technique scheme is: the invention uses network processor to divide report into following three types: dialogue head package from IPv6 sub net host computer to IPv4 sub net host computer, dialogue head package from IPv4 sub net host computer to IPv6 sub net host computer, report of built dialogue. The invention can be used in protocol transmission of IPv4 / IPv6 sub network host computer.

Description

technical field [0001] The invention relates to a method for IPv4 / IPv6 network protocol conversion, in particular to a method for realizing IPv4 / IPv6 network protocol conversion by using a network processor. Background technique [0002] The IPv4 (TCP / IP) protocol is the most important protocol family on the contemporary Internet, and it is a protocol that all computers connected to the Internet must support. However, with the development of the Internet, some shortcomings of IPv4 are gradually exposed, the most important of which is the serious shortage of address space. Due to historical reasons, fewer IPv4 addresses are allocated to my country, and the problem of address exhaustion is even more serious. [0003] IPv6 is designed to replace the existing IPv4 (TCP / IP) protocol, also known as the next generation Internet protocol. IPv6 is proposed in order to solve some problems and deficiencies existing in IPv4, and it also proposes improvements in many aspects, such as r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L29/12
Inventor 曲延光李存张文良杨兵曹昊阳
Owner 上海亿人通信终端有限公司
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