Design And Implementation Of Smart VPN On Access Router

With the speeding up of the branches of enterprise,business site and the Internet of things,along with the growing requirement of connecting to the Internet,the use of traditional line attachment has been unable to meet the needs of customers,such as high bandwidth.People have been dedicated to the method that can effectively solve the bandwidth bottlenecks and provide high reliability of network system in existing conditions for a long time.Link aggregation technology well solved this difficult network problem,so the research and implementation of link aggregation technology on the network equipment has very important practical significance.This article is based on a solution of access router(Access Router,AR)which is provided by Huawei technologies co.,after in-depth study of AR device hardware and software,we completed the implementation of link aggregation technology in AR and named it smart VPN,namely SVPN.First,this paper analyzes the requirement of SVPN,identifying the goals and values;secondly,gives a detailed introduction of SVPN's function design,module design and sub-module design;thirdly,completed the design of the SVPN two working mode:lone-ranger mode and hub-spoken mode,two scheduling mode:based on the link priority,which is called priority schedule and based on the bandwidth of link,which is called overflow schedule;we also design the SVPN data structure and the realization method of specific function;finally,we build a local environment,test the system's function and performance,verified the reliability and stability of the system.