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Deep packet inspection method and system

A deep packet inspection and packet technology, applied in the field of deep packet inspection based on the first packet, can solve the problems of large system resource consumption and affect forwarding capability, and achieve the effect of reducing performance consumption and improving packet forwarding efficiency.

Active Publication Date: 2015-06-17
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] A technical problem to be solved by the embodiment of the present invention is to solve the problem that the traditional packet-by-packet DPI analysis consumes a lot of system resources and affects the forwarding capability

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0024] At the same time, it should be understood that, for the convenience of d...

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Abstract

The invention discloses a deep packet inspection method and system based on an initial packet and relates to the technical field of deep packet inspection. According to the deep packet inspection method and system, an initial packet DPI identification mechanism is introduced, by conducting DPI analysis to first multiple packets of a new dialog establishment process, the service application type of the dialog is identified, then based on an identification result and an application processing strategy, a packet filtering rule list is established, then through the packet filtering at two levels, reasonable flow distribution is conducted by means of the functions such as hardware forwarding and packet forwarding, the immediate processing and forwarding of packets are achieved, and it is avoided that all the packets enter into a CPU and a DPI engine for processing, so that equipment performance consumption is reduced, the packet forwarding efficiency is improved, and the method and system are suitable for being achieved in equipment with the performance limited such as a household gateway.

Description

technical field [0001] The invention relates to the technical field of deep packet detection, in particular to a method and system for deep packet detection based on a first packet. Background technique [0002] With the rapid development of Internet business and the intensified competition of broadband access, the traditional pure pipeline business model is facing more and more challenges. In this competitive situation, in order to avoid becoming a "dumb pipe", smart pipes have become the direction for operators to explore for transformation. One of the prerequisites for smart pipelines is to be able to identify applications running on the network through DPI (Deep Packet Inspection) technology. As the network terminal closest to the user, the home gateway can accurately perceive service quality and improve user experience by integrating the deep packet inspection function, helping the construction of intelligent pipelines. [0003] Based on the analysis of L2~L4 layer me...

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Application Information

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IPC IPC(8): H04L12/26H04L12/741H04L45/74
Inventor 汤宪飞赵伟峰刘文超万象
Owner CHINA TELECOM CORP LTD
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