The Design And Implementation Of A SDN Traffic Dispatching System Based On ODL Platform

With the vigorous development of the Internet,IP-based simple network architecture becomes complex operation and maintenance management,network innovation difficulties,equipment,increasingly bloated.In order to solve these problems,the industry has been exploring new technical solutions,after years of technological development,SDN(Software Definition Network)came into being.SDN technology was used to develop an SDN traffic dispatching system to solve the problem of network bloat in ODL(OpenDaylight,an open source development platform of SDN).The SDN traffic dispatching system uses the B / S structure and implements the MD-SAL framework.The SDN traffic dispatching system can manage the underlying network topology and calculate the optimal path of the network traffic based on the user's needs and the user's network topology information,and then invokes the configuration management module.The related equipment delivers the required configuration information,and then completes the scheduling network traffic scheduling,and scheduling the completion of network traffic to do real-time monitoring to ensure the correct flow of network scheduling and adjustment.SDN traffic dispatching system has automatic adjustment of network traffic changes,network traffic scheduling function by time,change the adjustment of the reverse notification function,node and link emergency protection measures,automatic circuit breaker switch measures,configuration failure rollback to the correct configuration measures,Retry measures after traffic scheduling fails,and so on.SDN traffic dispatching system is divided into scheduling management module,algorithm module,configuration module,topology management module,flow acquisition module,NQA module,data management module,which is the central nervous system of the whole system,Between the front page and the bottom of the topological devices,and other modules in the system have to deal with most of the business logic,scheduling,adjustment,protection of network traffic and other functions,play a coordination system in the normal work of the various modules effect.SDN traffic scheduling system is implemented,verified and tested to complete the intended target.It not only completes the accurate network traffic dispatch,but also can make the correct adjustment to the non-conforming network traffic.It is a relatively complete new network architecture solution,which makes it possible for a network administrator to control the whole network.