基于OpenFlow的SDN技术架构的设计及应用

Design and Application Research of SDN Technology Architecture based on Open Flowd

软件定义网络(SDN)是一种新型的网络创新架构,它将网络设备的控制面和数据面分离开来,实现了网络流量的灵活控制,为核心网络和应用创新提供了良好平台.该文首先分析了SDN的应用现状,总结了SDN技术目前存在的问题,然后设计了基于OpenFlow的SDN架构,并分析了其在各种网络场景中的应用.实践证明基于OpenFlow的SDN网络提供了灵活的网络自动化运维管理架构,减少了运维费用,降低了操作风险,增强了网络的可靠性和安全性,并支持新的IT服务及模型的部署.

Software defined network is a new network architecture. And it separates the control plane anddata plane of the network device,realizes the flexible control of network traffic,provides a goodplatform for core network and application innovation. Firstly,We analyzes the application status ofSDN,summarizes the problems existing in SDN technology,then designs the SDN architecturebased on Open Flow and analyzes the its application in various network scenarios. The practiceshave proved that the SDN network provides a flexible network automation management frameworkbased on Open Flow. It can be used to reduce operating costs and operational risk,enhance thereliability and security of the network and support the deployment of new IT services and models.