Research And Application Of Traffic Optimization Oriented Software Defined Networking Cooperative Controller

Software-defined networking has the characteristics of transfer control separation,centralized control,programmable interface,etc.,and has been widely used in industry in recent years.Telecommunication operators transform traditional networks based on SDN technology to solve the problems of dynamic deployment of network links and increase the speed of online services.This article relies on the telecom operator's project and designs and develops an SDN cooperative controller solution to transform the traditional network to achieve the intelligent management and control of the network.The main research contents of this article are as follows:(1)In view of the problems that the operator IDC network egress traffic cannot be flexibly scheduled,the controllers of various manufacturers cannot be managed uniformly,and the differential protection of major customers cannot be provided,a network intelligent transformation scheme based on the SDN cooperative controller is proposed.The SDN cooperative controller includes key core modules such as device and network information collection module,analysis and processing module,controller strategy configuration module and system information configuration module,etc.It builds network traffic intelligent scheduling and multi-controller unified management and control capabilities.(2)The front-end application of the SDN collaborative controller uses the angular js2.0 framework as the theme.The back-end bottom layer uses the open source framework Yii2 component development,and uses the Linux + NGINX + My SQL + PHP mode to deploy in the cloud resource pool of telecom operators.The SDN cooperative controller has functions such as network traffic and flow direction display,global network topology automatic discovery,device information display,traffic scheduling,routing and customer information configuration,and system status display.(3)The SDN cooperative controller has been applied in the current network of a telecommunications operator in a province,and has realized the unified management and control of a total of more than 30 IDC core routers in the whole province,which can implement one-click scheduling of network traffic according to the destination IP address,and achieve differentiated protection of major customer traffic based on the source IP address,and the intelligence of network management and control and the efficiency of network operation and maintenance have been significantly improved.