摘要
本文首先介绍了软件定义网络(SDN)逻辑层次、网络结构和组网特性。对SDN网络建模、路由算法、可编程转发平面技术、控制器技术、扩展技术等关键技术进行简要介绍,调研并分析SDN发展趋势和标准化进程,以及SDN技术在各领域的应用场景,最后对SDN可扩展技术等关键技术的发展趋势进行了展望分析,提出SDN面对日益复杂的网络环境亟需解决的问题。
In this paper, we first introduce the logic hierarchy, network structure and characteristics of software defined network （SDN）, and brief- ly introduces key technologies including SDN network model, routing algorithm, programming and retransmitting planar technology, controller technology, expansion technology. Then we analyze on the development trend of SDN and its standardization process, as well as its application in various fields. Finally, we analyze the SDN expansion technology and its development trend, and point out issues in SDN in the face of increasing- ly complex network environment.
出处
《广播与电视技术》
2017年第6期68-72,共5页
Radio & TV Broadcast Engineering
