Design And Implementation Of Acquisition And Analysis Of The Network Traffic Based On SDN

The innovations of network technology have provided a better and more convenient service for people's life.But it also brings some new problems,such as the expansion of new business has made the network'scale bigger and bigger,and also makes the agreement in network equipment more and more numerous.With the growth of business volume,the data traffic in the network also shows a surge of status,and the distributed management mode in traditional network architecture has been unable to effectively meet the increase of new demand.Based on the idea of software define network,the new SDN architecture is centralized and unified management of the whole network through the separation of data plane and control plane in the network.From this point,it is necessary to obtain and analyze the traffic situation in the network,so that the whole network can be dispatched and managed according to the results.The system uses the OpenDaylight control platform for Java and SQL Server 2012 as the development environment.First of all,according to the actual situation the business was carried out for the whole system requirements analysis,through the model simulate the flow to obtain two processes: for acquisition and flow,and the two process were summarized.Then,the system architecture is modeled based on SDN thought,and the relationship between the traffic acquisition module and other modules is defined,and the traffic acquisition module should be realized.After this,we analyze the important points in the flow acquisition module,such as determining the target flow,the analysis of convection,and the start-up and closing of the thread.Then the database design is carried out and four tables including the link information table are established.Then the system functions are designed and implemented in the form of flowchart and Json language format.Finally,the system functions are tested by corresponding test cases.By means of the real-time network traffic data presented by the traffic acquisition module,the user can master the data transmission situation of the whole network,and then schedule the network traffic reasonably according to the demand of the business.Theflexible and controllable network environment can facilitate the centralized management of the whole network,which can not only support the business effectively,but also reduce the cost of operation and maintenance.