兰巨龙,
江逸茗,
孙鹏浩
国家数字交换系统工程技术研究中心 ??郑州 ??450002
基金项目:国家自然科学基金(61521003, 61572519, 61502530),国家863计划项目(2015AA016102)
详细信息
作者简介:张少军:男,1989年生,博士生,研究方向为软件定义网络
兰巨龙:男,1962年生,教授,研究方向为宽带信息网、可重构柔性网络
江逸茗:男,1984年生,助理研究员,研究方向为软件定义网络、网络虚拟化
孙鹏浩:男,1992年生,博士生,研究方向为软件定义网络
通讯作者:张少军 zhangsj07@126.com
中图分类号:TP393.2计量
文章访问数:1766
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被引次数:0
出版历程
收稿日期:2017-12-06
修回日期:2018-05-18
网络出版日期:2018-07-12
刊出日期:2018-09-01
Flow Characteristics Aware Dynamic Controller Assignment in Software-defined Networking
Shaojun ZHANG,,Julong LAN,
Yiming JIANG,
Penghao SUN
National Digital Switching System Engineering and Technological R & D Center, Zhengzhou 450002, China
Funds:The National Natural Science Foundation of China (61521003, 61572519, 61502530), The National 863 Program of China (2015AA016102)
摘要
摘要:在部署分布式控制平面的软件定义网络中,控制器与交换机的关联仅以数据流请求的数量分布作为控制资源分配的依据。该文针对这一问题,以数据流的源目的地址特征为例,对不同特征数据流的控制资源消耗进行了分析,提出在控制资源分配中应对数据流的特征分布加以考虑。然后,设计了一种流特征感知的控制器关联决策机制,并针对网络流的动态变化特性设计了一种快速求解算法。仿真结果表明,与基于负载均衡的机制对比,所提机制在使用模拟退火算法求解时能节省10%~20%的控制资源消耗;所提快速求解算法可节省10%的资源消耗,且相比模拟退火算法具有较大的速度优势和良好的可扩展性。
关键词:软件定义网络/
控制器关联/
资源分配/
流特征感知
Abstract:In Software-Defined Networking (SDN) with distributed control plane, the switches are assigned to controllers using only the quantity distribution of flow requests as the basis of resource allocation. To address this issue, the control resource consumption of flow requests processing with different characteristics is analyzed taking the source and destination of flow as an example, from which a conclusion is drawn that the characteristics distribution of flow should be taken into account when allocating control resource. Then, a flow characteristics aware controller assignment model is designed, and a fast algorithm coping with the fluctuation of flow request is proposed. Simulation results show that when solving with the simulated annealing algorithm, the model can save 10%~20% of control resource compared with the load balancing model; with 10% of resource saving, the proposed algorithm outperforms the simulated annealing algorithm in execution speed and scalability.
Key words:Software-Defined Networking (SDN)/
Controller assignment/
Resource allocation/
Flow characteristics aware
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