河北大学学报(自然科学版) ›› 2020, Vol. 40 ›› Issue (4): 427-432.DOI: 10.3969/j.issn.1000-1565.2020.04.014

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基于时序与集合的SDN流表更新策略

刘振鹏1,2,李明1,王鑫鹏1,任少松1,李小菲2   

  • 收稿日期:2019-12-19 出版日期:2020-07-25 发布日期:2020-07-25
  • 通讯作者: 李小菲(1979—),女,河北保定人,河北大学实验师,主要从事网络信息安全与异常检测方向研究. E-mail: lixiaofei@hbu.edu.cn
  • 作者简介:刘振鹏(1966—),男,河北安国人,河北大学教授,博士,主要从事网络信息安全、隐私保护、软件定义网络等方向研究. E-mail:lzp@hbu.edu.cn
  • 基金资助:
    河北省自然科学基金资助项目(F2019201427);教育部“云数融合科教创新基金”资助项目(2017A20004)

Update strategy of SDN flow table based on time series and sets

LIU Zhenpeng1,2, LI Ming1, WANG Xinpeng1, REN Shaosong1, LI Xiaofei2   

  1. 1.College of Electronic Information Engineering, Hebei University, Baoding 071002, China; 2.Center for Information Technology, Hebei University, Baoding 071002, China
  • Received:2019-12-19 Online:2020-07-25 Published:2020-07-25

摘要: 流表更新是软件定义网络中不可忽视的问题.针对SDN(软件定义网络)流表更新一致性问题提出一种基于时序与集合的流表更新方案,将交换机根据新旧路径分类,分类集合按次序分别进行更新,首先将新流表更新完毕以保证传输,最后删除旧流表.仿真实验表明,在相同网络速率下,方案保证了流表更新的一致性,更新时间较短,控制负载较低,并减小了交换机流表空间的占用.

关键词: 软件定义网络, 流表更新, 流表更新一致性

Abstract: Flow table update is an issue that cannot be ignored in software-defined networks(SDN). Aiming at the problem of SDN flow table update consistency, a flow table update scheme based on timing and set is proposed. The classification of switches is separated by new and old paths, and the updating of the classification set is in accordance with a certain order. To ensure the transmission, the updating of the new flow table is realized before the deletion of the old one. Simulation experiments show that this scheme realized the consistency of the SDN flow table update under the same network speed. At the same time, this scheme showed the relatively short update time, the comparably low control load, and the reduction of the occupation space of switch flow table to ensure the better update effect.

Key words: software-defined network, flow table update, flow table update consistency

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