Design And Implementation Of Traffic Scheduling Strategy In SDN Data Center

In recent years,with the continuous development of data center network,traditional network architecture and trafic scheduling strategy are gradually difficult to adapt to the current situation of rapidly increasing data traffic and increasingly complex business types.On the other hand,SDN network architecture has the advantages of separation of control layer and data layer,centralized control and access to global network information.It quickly becomes a widely used technology in the current data center network,and also brings a new idea to the traffic scheduling work in the data center network.This article introduces the development of the current data center network and SDN network technology,summarizes the existing data center network traffic scheduling strategy,designed and implemented the classified scheduling strategy based on SDN architecture,in addition designed a network visualization platform based on SDN architecture.The details are as follows:(1)Design and implementation of classification scheduling strategy based on SDN architectureThe existing traffic scheduling strategy in data center network usually cannot take into account the transmission performance of both large flow and small flow.Therefore,this paper proposes a classified scheduling strategy based on SDN architecture.Using the advantages of SDN controller to centrally control and obtain global network information,the transmission paths of large flow and small flow in the network are isolated,and the large flow is classified into large flow and medium flow,and different scheduling strategies are adopted respectively to maximize the utilization of network resources.This paper completes the implementation of the above scheduling strategy based on Ryu controller,and then verifies it through simulation experiments.Experimental results.show that compared with ECMP algorithm and Hedera algorithm,the proposed strategy improves the transmission performance of small flows,the transmission of both large flows and small flows are considered.(2)Design and implementation of network visualization platform based on SDN architectureIn order to improve the visibility of network topology and status information in data center network and allow users to monitor network status in real time,this paper designed and implemented a network visualization platform based on SDN architecture.The platform is based on the advantage of SDN controller to obtain the entire network topology and the state information,the integrated use of MySQL database and Django framework and front technology,the network topology and state information are displayed in real time,the user is able to monitor the quality of network state intuitively and clearly.The function of the platform is verified by simulation experiments.