Method and device for identifying traffic of access network

A traffic identification and network access technology, applied in the field of network communication, which can solve the problems of large storage overhead and computation, finding defined variables in encrypted data packets, and slow network traffic detection.

Inactive Publication Date: 2010-05-26
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] However, in the above-mentioned DPI implementation process, all data packets transmitted in the access network need to be copied, stored, and then calculated and processed. Used for high-speed online traffic identification on the access network
[0006] In addition, in the above-mention

Method used

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  • Method and device for identifying traffic of access network
  • Method and device for identifying traffic of access network
  • Method and device for identifying traffic of access network

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Embodiment Construction

[0076] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0077] figure 1 It is a schematic diagram of the traffic identification process of the access network in the embodiment of the present invention. Such as figure 1As shown, the main idea of ​​the embodiment of the present invention is as follows: step 101, extract sub-flows from the data stream in the access network, and generate sub-flow features; step 102, obtain sampled sub-flows by sampling the sub-flows, and then Identify the application layer protocol corresponding to the sampled sub-flow; step 103, cluster the sub-flow to form a cluster; step 104, identify the application layer corresponding to each cluster according to the application layer protocol corresponding to the sampled sub-flow in each cluster agreement; step 105, judge whether t...

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Abstract

The invention discloses a method and a device for identifying the traffic of an access network. The method comprises the following steps of: extracting a sub-stream, which corresponds to each data stream, from each data stream of the access network; sampling all the sub-streams to obtain sampling sub-streams; identifying the application layer protocol of each sampling sub-stream and establishing a mapping relationship between the sampling sub-stream and the application layer protocol according to the identification result; extracting initial data from each sub-stream and establishing sub-stream characteristic vectors which correspond to the sub-streams according to the initial data; clustering the sub-streams according to all the sub-stream characteristic vectors to form a plurality of clusters; establishing a mapping relationship between the clusters and the application layer protocols according to the mapping relationship between the sampling sub-stream and the application layer protocol; and identifying the application layer protocol, which each sub-stream in each cluster corresponds to, according to the mapping relationship between the clusters and the application layer protocols so as to identify the application layer protocol of the data stream which correspond to the sub-stream in the access network. The method and the device for identifying the traffic of the access network can perform high-speed on-line flow identification for the access network and can identify the application layer protocol of an encrypted data stream in the access network.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a flow identification method and device for an access network. Background technique [0002] With the diversification of network service types, network traffic identification technology has become a hot spot in the industry. The access network is a network that connects the core network and user terminals, or connects the core network and the user premises network. It can identify different types of network traffic in the access network in a timely and accurate manner, which is very important for traffic engineering, quality of service (QoS) and network security. Management is important. [0003] In the process of network communication, the original data information needs to be divided into many small data packets in order to pass through the network at high speed. Therefore, the network traffic transmitted in the access network is in the form of data packets. The...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/26H04L29/08H04L47/41
Inventor 寿国础张剑胡怡红郭志刚钱宗珏宁帆
Owner BEIJING UNIV OF POSTS & TELECOMM
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