杨旭,,
刘雅丽,
孙立
合肥工业大学计算机与信息学院 合肥 230009
基金项目:国家重大科学仪器设备开发专项(2013YQ030595)
详细信息
作者简介:史久根:男,1963年生,副教授,研究方向为嵌入式系统、计算机网络和软件定义网络
杨旭:男,1994年生,硕士生,研究方向为嵌入式系统和软件定义网络
刘雅丽:女,1996年生,硕士生,研究方向为软件定义网络和网络功能虚拟化
孙立:男,1993年生,硕士生,研究方向为软件定义网络和网络功能虚拟化
通讯作者:杨旭 2018110930@mail.hfut.edu.cn
中图分类号:TP393计量
文章访问数:220
HTML全文浏览量:108
PDF下载量:28
被引次数:0
出版历程
收稿日期:2020-04-03
修回日期:2020-09-22
网络出版日期:2021-08-09
刊出日期:2021-09-16
Fast and Consistent Flow Update in Software Defined Network
Jiugen SHI,Xu YANG,,
Yali LIU,
Li SUN
School of Computer and Information, Hefei University of Technology, Hefei 230009, China
Funds:The National Major Scientific Instruments Development Project (2013YQ030595)
摘要
摘要:在软件定义网络中,为了实现各种网络性能优化目标,控制面需要频繁的对数据面进行更新。然而,由于数据面的异步性,不合理的更新将严重降低网络性能。针对此问题,该文提出一种快速和一致的流更新策略(FCFU)。该策略通过流分段减弱其原有的强依赖关系,使能并行更新,通过分析子流段与多个资源间的依赖关系得到总更新轮数较少的更新安排,最后基于延时队列完成一致性流更新。实验结果表明,与现有的流更新算法相比,该策略能够缩短流更新总时间达20.6%,同时保证了更新期间无拥塞和包乱序等问题的发生。
关键词:软件定义网络/
流更新/
一致性更新/
无拥塞/
包乱序
Abstract:In Software Defined Networks (SDN), in order to meet various network performance optimization goals, the control plane needs to frequently update the data plane. However, due to the asynchronous nature of the data plane, unreasonable updates will severely degrade network performance. To address this issue, a Fast and Consistent Flow Update (FCFU) strategy is proposed, which weakens the original strong dependency through flow segmentations and enables parallel updates. By analyzing the dependency relationship between sub-flow segments and multiple resources, the update schedule with less numbers of rounds is obtained. Finally, consistent flow update is achieved based on the delay queue. Experimental results show that, compared with the existing flow update algorithms, this strategy can shorten the total completion time of flow update by 20.6%, while ensuring that no congestion and packet reordering occur during the update period.
Key words:Software Defined Network (SDN)/
Flow update/
Consistent update/
Congestion-free/
Packet reordering
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