SDN试验床网络虚拟化切片机制综述  

Research on network virtualization slicing mechanism in SDN-based testbeds

作　　者：刘江[1,2] 黄韬[1,2] 张晨[1] 张歌[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876 [2]北京未来网络科技高精尖创新中心,北京100124

出　　处：《通信学报》2016年第4期159-171,共13页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61302089);国家高技术研究发展计划基金资助项目("863"计划)(No.2015AA016101;No.2015AA015702);北京市科技新星计划基金资助项目(No.Z151100000315078)~~

摘　　要：未来网络体系架构和关键技术的研究需要灵活开放的测试验证环境,基于传统分布式的网络架构难以达到动态虚拟化、有效管控和新协议灵活部署的需求。随着软件定义网络(SDN)技术的出现和发展,上述问题找到了有效的解决途径,因此,基于SDN构建网络试验床成为了近年来该领域的主流研究方向之一。其中,基于SDN的网络虚拟化切片技术更是试验床中的核心支撑技术,可以根据不同试验的需求切分物理网络资源,从而提供并行、独立的网络环境。将重点研究基于SDN的试验床中使用的网络虚拟化切片机制,从"流量识别和切片网络标识"、"虚拟节点抽象"和"虚拟链路抽象"这3个关键技术出发,对当前基于SDN试验床中的典型网络虚拟化切片机制进行介绍与分析,并总结了该领域未来可行的研究方向。The researches on future network architecture and key technologies need test environment both open and flexible. Traditional distribute architecture was short on effective control and new protocol deployment. The emerging of the software defined networking（SDN） technology provides a promising way to solve this problem and become a major research direction in recent years. In the SDN based network testbed, the virtual network slicing technology was a key issue since it could separate physical resource and provided individual virtual network environment. Therefore, the slicing methods of some typical network virtualization platforms with the perspective of ＂slice identifier＂, ＂virtual nodes abstraction＂ and ＂virtual links abstraction＂ were introduced, and the future research directions were concluded in this field.

关 键 词：软件定义网络 OpenFlow 网络虚拟化 试验床 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]