SDN网络测量技术综述  

An overview of software-defined network measurement technologies

作　　者：张恒[1] 蔡志平[1] 李阳[1] Heng ZHANG,Zhiping CAI,Yang LI(College of Computer, National University of Defense Technology, Changsha 410073, Chin)

机构地区：[1]国防科技大学计算机学院,长沙410073

出　　处：《中国科学：信息科学》2018年第3期293-314,共22页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:61379145;61702539)资助项目

摘　　要：近年来,随着网络规模的不断扩大,结构和功能日趋复杂,网络流量快速增长,各种新型网络应用不断出现,对传统网络的配置、运行和管理提出了严峻挑战.软件定义网络(software defined networking,SDN)作为新兴的网络架构,较好地适应了各种网络应用的需求.在SDN网络中进行测量任务能及时了解、监控和掌握网络状态,是优化网络结构、改善网络服务质量、实现网络故障诊断和恢复的重要手段.本文对SDN网络测量技术进行综述,研究网络性能测量中的延迟测量、丢包测量和带宽测量等方面以及网络流量测量等相关技术,从设计理念、测量方式、测量对象、技术特点,以及优缺点等方面做了详尽的描述.文章最后进行了总结并对未来工作进行了展望.In recent years,with the continuous expansion of the size of networks,the complexity of network structure and functionality and the volume of network traffic have immensely increased.This has resulted in severe challenges in configuring,operating and managing traditional networks.As a prominent way of monitoring and handling network status in order to optimize network structure,enhance the quality of service and achieve network error detection and recovery,software-defined networks,as a new emerging network structure,has considered all of these problems and suits these network applications well.This paper is a survey of the state-of-theart research on measurement technologies in software-defined networks,of which we detail the design concept,performance approach,measurement objects,technical advantages and disadvantages from three standpoints：network performance,topology,and traffic measurement.We mainly cover latency,packet loss and bandwidth measurements when considering network performance measurement.Finally,the technological approaches are summarized and future research issues are discussed.

关 键 词：软件定义网络 延迟测量 丢包测量 带宽测量 流量测量 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]