[1]于天放,芮兰兰.基于OpenFlow 的 SDN 架构研究与实践[J].计算机技术与发展,2018,28(07):159-164.[doi:10.3969/ j. issn.1673-629X.2018.07.034]
　YU Tian-fang,RUI Lan-lan.Research and Practice on SDN Architecture Based on OpenFlow[J].,2018,28(07):159-164.[doi:10.3969/ j. issn.1673-629X.2018.07.034]
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基于OpenFlow 的 SDN 架构研究与实践()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
28
期数:
2018年07期
页码:
159-164
栏目:
应用开发研究
出版日期:
2018-07-10

文章信息/Info

Title:
Research and Practice on SDN Architecture Based on OpenFlow
文章编号:
1673-629X(2018)07-0159-06
作者:
于天放; 芮兰兰
北京邮电大学 网络与交换技术国家重点实验室,北京 100876
Author(s):
YU Tian-fang; RUI Lan-lan
State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China
关键词:
软件定义网络; OpenFlow; 流表; 拓扑发现; Mininet; 服务质量
Keywords:
SDN; OpenFlow; flowtable; topology discovery; Mininet; quality of service
分类号:
TP393
DOI:
10.3969/ j. issn.1673-629X.2018.07.034
文献标志码:
A
摘要:
随着互联网数据流量在规模上的快速增长,交换机和路由器等设备的软硬件结构日趋复杂化,增加了网络管理的难度。 传统网络的控制平面与转发平面的高度耦合不仅让网络节点中全局策略的部署变得困难,而且限制了网络的灵活性与可扩展性。 SDN(software-defined networking,软件定义网络)打破了传统网络分层的思想,它将控制和转发解耦,通过提供开放式应用程序接口实现对网络设备的自动化配置和网络流量的实时监测,用以满足日益变化的网络需求。 在研究了 SDN 架构和主要实现方式 OpenFlow 技术的基础上,深入探讨了基于 OpenFlow 协议的底层网络拓扑发现机制和网络性
能监测机制,并搭建了实验平台进行仿真测试。 实验结果表明,SDN 架构通过逻辑上集中控制的方式实现底层网络对上层应用的透明化并根据全局网络视图进行精细的流量监测,从而提高网络整体的服务质量。
Abstract:
With the rapid growth of Internet traffic,both software and hardware components of switches and routers are becoming more complex,which makes it difficult for network administrators to maintain effective networks. In IP-based networks,the high level of interdependence between the control layer and the forwarding layer not only increases the difficulty of deploying integrated strategies on nodes,but also restricts flexibility and extendibility of these networks. An emerging technology named SDN puts forward a novel architecture against the present multi-layered architecture of the Internet,which innovatively separates out the control layer from the forwarding layer and meets ever-increasing network requirements by means of providing open APIs to realize both automatic configurations on network devices and real-time monitoring on traffic. On the basis of research on the SDN architecture and OpenFlow technology,we deeply explore topology discovery mechanism of underlying network and network performance monitoring mechanism based on OpenFlow. An experiment platform is built to carry out simulation tests,which shows that SDN architecture hides details of underlying networks by means of centralized control,provides end-user applications with an overall view,and accurately monitors traffic according to the view.All of these results will be key factors for raising the quality of service of networks.

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更新日期/Last Update: 2018-09-05