中国联通SDN的思考和应用实例

[摘要] 通过对电信级软件定义网络（SDN）网络的主要设计目标、目标部署架构，以及引入SDN场景的介绍，认为SDN的引入需考虑业务和网络发展的实际需求以及对应技术的成熟程度，在不同域的网络逐步进行。网络重构并不意味着完全摒弃传统网络，而是需要渐进式地继续坚持IP基础技术体系，推动网络向IT化转型。

[关键词] 软件定义网络；云计算；目标部署架构；数据中心

[Abstract] In this paper, the design objective, target deployment architecture, and scenarios of soft defined network (SDN) are introduced. We propose that SDN should be gradually used in different domains, the actual needs of the business and network development, and the maturity of the corresponding technologies should all be considered. Network reconfiguration does not mean the disuse of the traditional network, but the progressive using of IP-based technology system. In this way, IT transformation of the network can be promoted.

[Keywords] SDN; cloud computing; target deployment architecture; data center