Design And Implementation Of Data Flow Management System Based On Openflow Network

With the continuous development of network information technology, network size is also continuously increased, the quantity of user services that current internet load becomes larger and larger and its category also becomes more and more complicated. As the traditional network system has the problems of network isomerization and design defects of network architecture, etc, it already can’t satisfy users’ requirements on network controllability and security. On the other hand, the repair method for the traditional network leads to redundancy of network structure and network isomerization, and can’t solve current problems fundamentally. Only by satisfying current development needs of internet via a new network system architecture, can the above problems be solved fundamentally.In2008, Clean Slate project group of Stanford University proposed a new network model of OpenFlow, and its core idea is to separate the transmission layer and control layer of network. Because of the appearance of OpenFlow, people can deploy various kinds of new protocols and research achievements in the network freely, to provide an expandable, completely controllable and programmable network experiment platform for the wide network researchers, thus, researchers can provide many kinds of expandable ports for OpenFlow controller of the user, realize the unified, flexible and efficient management and maintenance for the network, and greatly drive and promote the network innovation and development. Via analyzing the disadvantages in current network, on the basis of making in-depth research on technologies relevant to OpenFlow network, the paper puts forward the improvement program, studies and designs a kind of data flow management and control system based on OpenFlow network.The paper firstly introduces current situation and development trend of current internet, sums up problems in current internet technology, puts forward the functional demands of the system, and then explains the realization method to solve problems of current network via OpenFlow technology by introducing the principle and relevant technologies of OpenFlow network in details. Secondly, as per the technical features of OpenFlow network, the paper designs a kind of concentrated network management and control framework, puts forward functional demands for the system to make modular design, and explains the functions that every module needs to realize in details. On this basis, the paper realizes the functions in the system, and discusses the realization program of individual module, relevant technology used and specific realization details. Then, by testing the functions and performance of the system, it verifies the correctness of system realization function. Finally, it sums up key works of the whole paper, and explains current disadvantages of the system and the direction for further improvement.