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软件定义网络因其控制平面与转发平面分离的体系使得网络具备快速创新、敏捷编程以及易于管理等特性而备受关注.控制平面被转移到单独的主机或服务器上形成控制器.软件定义网络的核心,控制器因支撑着大量网络应用的运行以及控制着网络的行为而成为学术界和工业界的研究热点.从控制器框架、可编程性、控制模块的管理和编排、控制器的分布式部署等方面进行综述.最后,给出了下一步控制器领域的研究方向.
Software Defined Network Due to the separation of the control plane from the forwarding plane, the network has drawn attention to features such as rapid innovation, agile programming, and ease of management.The control plane is transferred to a separate host or server to form a controller Software Defined Network At the core, the controller has become a research hotspot in academia and industry because it supports the operation of a large number of network applications and controls the network.From the controller framework, the programmability, the management and arrangement of the control module, the distributed controller Deployment and so on.Finally, given the research direction of the controller in the next step.