Research On Traffic Analysis And Control Based On DPI Principle

With the fast development of the Internet applications, broadband Internet is everywhere, the network has been indispensable in people's work and daily life, Internet users on the network quality requirements are increasingly strict. As operators, safeguard the network stable and rapid development, to achieve high quality of service (QoS) management, develop, and retain quality customers, maximize reduce operators operating costs, to establish a secure network environment, reduce the user's uncertain risks, enhance the user experience satisfaction has become the first task.In this paper, the systematic study of the DPI technology, describes the deployment of DPI system, after the completion of the deployment of traffic analysis and optimization of the results. The main work of this paper is as follows:1. analysis of network structure, PPPOE users access to the Internet dial-up and data encapsulation process, analysis the problems need to be solved.2. the research of DPI, QoS, PFQ principle and detailed study DPI hardware features, hardware equipment and strategy deployment scheme, analysis of DPI system function, after analyzing the DPI system deployment of protocol flow analysis, control and the network affect the implementation.3. SMP module, billing, authentication principle, SMP configuration module, to capture the authentication and accounting message analysis and different manufacturers bras equipment attributes through the analysis of single user monitoring strategy deployment. After detailed analysis of SMP module function realization and deployment of traffic analysis and control results.