计算机科学 ›› 2015, Vol. 42 ›› Issue (Z6): 243-248.
曾珊,陈 刚,齐法制
ZENG Shan, CHEN Gang and QI Fa-zhi
摘要： 服务器虚拟化以及各种云计算应用的出现,改变了传统的网络服务形态。软件定义网络(Software Defined Networking,SDN)技术将网络的控制平面和数据平面分离开来,为未来互联网技术提供了一种新的解决方案。然而, 由于数据的爆炸式增长,网络配置要求的频繁变化,需要研究高效的SDN实现方案。综述了SDN的起源与发展,详细介绍了ONF提出的SDN典型的三层架构中的基础设施层、控制层、应用层、南向接口和北向接口；然后结合目前业内的研究现状,详尽地分析了SDN 性能面临的问题和解决思路；最后提出了基于智能流表管理和树状可伸缩的控制平面管理的SDN性能优化方案。
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