Reserching And Implementation Of The Super Packet Transport Network Forwarding Strategy And Interface

With the continuous development of network services, the requirements to the performance of network are getting higher and the traditional network architecture is too bloated to deal with the increasing business needs. While under this circumstance, scholars have come up with the concept of SDN, core idea of which is the separation of network data forwarding and control. Then the network equipment will be controlled by the centralized controller to simplify the management function of themselves. The advantage of the new network architecture is that the netwok's concept of hierarchy will be diluted and the controller will make a more comprehensive and favorable forwarding policy by collecting the information of whole network. But it is unreceivable for operators to cover the cost of the replacement between the existing network equipment and SDN equipment.Therefore, S-PTN has become the new darling of operators, which combines the advanced thoughts of SDN and the exiting PTN network equipment.S-PTN has greatly expanded the flexibility of the exiting network by introduceing software controller to control the network and adapt including OpenFlow, Qx and other southbound protocol base on original EMS management platform.Thanks to the management ablility of controller, this paper, combined with the cooperation project of a communications company, realizes a real-time forwarding strategy system in the controller.Firstly, in order to imply this system, the related technology of S-PTN, OpenFlow protocol, OpenDaylight controller and Mininet platform are described in detail, and the key technology are analyzed in this paper.Secondly, this paper describes the design of real-time forwarding strategy system, including the design of network measurement module, forwarding policy module, and northbound interface, and also introduces the functions of each module. In addition, this paper presents a dynamic fusion method of genetic algorithm and ant colony algorithm to imply the strategy of data stream forwarding by studying the applications of these two algorithms in OpenFlow forwarding. Then, this paper describes the implement of realtime forwarding strategy system as an OSGi plugin of controller.Then, this paper verifys the effectiveness of the system in different network topology environment that is built by the Mininet simulation platform, and tests the northbound interfaces by RESTClient, and summarizes the experiment and test results.Finally, this paper summarizes the completed work, and also proposes the shortage of the exiting work and fellow-up research.