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Method for realizing distributed application tier conversion gate-link in network processor

A network processor and application layer technology, applied in network connection, data exchange network, digital transmission system, etc., can solve problems such as low efficiency, network bottlenecks, powerlessness, etc.

Inactive Publication Date: 2004-09-15
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the efficiency is relatively low. When the network speed is relatively slow, it can still bear the burden, but it is unable to handle the huge data traffic on the backbone network, which will constitute a network bottleneck.
On the contrary, it can achieve high performance by using ASIC chips, but it is much more complicated to realize and takes a long time to develop
Since the ASIC chip cannot be programmed, it is not easy to change once it is implemented, and it is difficult to upgrade

Method used

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  • Method for realizing distributed application tier conversion gate-link in network processor
  • Method for realizing distributed application tier conversion gate-link in network processor
  • Method for realizing distributed application tier conversion gate-link in network processor

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Embodiment Construction

[0030] The Intel IXP1200 network processor integrates six RISC processors (MicroEngine) and a StrongARM processor on an independent chip. Generally, data packets that need to be processed by the application layer conversion gateway not only need to analyze and convert the payload content, but also record the status of the payload. The complexity of these processes determines that it is not feasible to process all data packets that need to be processed by the application layer conversion gateway on the microengine.

[0031] Through the analysis of network traffic, it is found that under normal circumstances, domain name service data packets and file transfer protocol command packets do not account for a large proportion of data packet traffic on the entire Internet, and optimizing the system design of the IPv6 network can minimize the traffic A translation gateway requires traffic for packets that are translated by an application layer gateway. For file transfer protocol appli...

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Abstract

The invention relates to method of domain name service (DNS) conversion gateway as well as file transfer protocol (FTP) conversion gateway in network processor platform. Steps of the method are as following: (1) receiving port receives data packet; (2) converting address and protocol for received data packets by micro engine; (3) checking port number of protocol, structuring data packet for DNS packet or FTP command packet found by using 'taking along' technique; (4) SltongARM calls module of DNS conversion gateway to process DNS packet, and calls module of FTP conversion gateway to process FTP command packet; (5) data packet processed by conversion module of application layer gateway is sent to transmission queue to be transmitted. Practical testing verifies that NAT-PT realized by the invented method is capable of processing accesses between IPv4 network and IPv6 in real time.

Description

technical field [0001] The invention relates to the technical field of computer network communication, in particular to a method for implementing a distributed application layer conversion gateway inside a network processor, and is a method for improving IPv4 (Internet Protocol Version 4) and IPv6 (Internet Protocol Version 4) on a network processor platform. 6) Protocol conversion performance, a method to realize the conversion processing of the distributed application layer in the chip. Background technique [0002] IPv6 protocol is the next-generation Internet protocol that replaces IPv4 protocol, and it has many new features and functions. However, IPv6 is not compatible with the widely used IPv4 protocol on the Internet, for example, the address length and packet header format are different, so the transition from IPv4 to IPv6 will be a long-term process. How to achieve a smooth transition in this process is the first problem that people who adopt the IPv6 protocol fac...

Claims

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Application Information

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IPC IPC(8): H04L12/66H04L45/741
Inventor 孙红兵李忠诚殷昭印石晶林
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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