面向SDN的数据中心网络更新研究综述

近年来,由于软件定义网络(SDN)的控制平面与数据平面分离、集中式控制的特点,被广泛应用于数据中心网络(DCN).分四个部分对DCN更新的相关研究进行了综述.首先,介绍了DCN和SDN的基本概念及研究现状;随后,详细说明了传统DCN在更新方面遇到的缺陷;其次,重点讨论了基于SDN的数据中心网络(SD-DCN)更新场景的研究现状与存在的不足,同时指出了一些方案存在的缺点;最后,对基于SDN的数据中心网络未来研究方向进行了展望,以期为SD-DCN的研究与应用提供一定的参考.

Survey of research on data center network update based on SDN

In recent years,Software Defined Networking ( SDN) has been widely used in data center network ( DCN) due to its separation of control plane and data plane and centralized control features. The researches on DCN update are summarized from four parts. Firstly,the basic concepts and research status of DSN and SDN are introduced. Secondly,the defects of traditional DCN are described in detail. Thirdly,the research status and shortcomings of SDN-based DCN ( SD-DCN) update scenarios are focused,at the same time,the disadvantages of some scenarios are pointed out. Finally,developing trends of SDN-based DCN researches are prospected,in hope of providing some reference for SD-DCN researches and applications.