摘要目前,软件定义网络(Software Defined Network,简称SDN)已经成为当前研究的热点。SDN通过路由控制和数据转发相分离,改变了现有的网络架构,实现了网络和业务的可编程。本文从SDN产生背景和概念入手,归纳了SDN的关键技术和实现机制,并对SDN的应用及所面临的挑战进行了深入的分析和总结。
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