基于拓扑划分的SDN多控制器部署方法

发布时间：2018-03-29 05:12

本文选题：软件定义网络　切入点：多控制器　出处：《计算机应用研究》2017年11期

【摘要】：传统SDN架构中的单控制器在可靠性方面存在不足,因此基于多控制器的SDN控制层架构的研究逐渐得到重视。然而现有工作或面向多控制器的协作或面向控制器热备份等问题,较少考虑控制器及控制层与转发层间链路失效的场景下多控制器的部署问题。针对上述不足,提出一种基于拓扑划分的SDN多控制器部署方法。首先从拓扑分析入手,研究基于最小f-平衡边割的拓扑划分算法,确定控制器数量和部署区域;然后针对控制器与转发设备距离不平衡问题,提出基于带外连接和拓扑划分的控制器部署算法,为控制器切换提供支撑。校园网环境下的实验结果证明,该方法能够实现高可靠的SDN控制层面,在控制器切换时的收敛速度、控制指令下发的执行效率以及传输任务保障能力方面有较大优势。
[Abstract]:The reliability of single controller in traditional SDN architecture is insufficient, so the research of SDN control layer architecture based on multi-controller has been paid more and more attention. However, there are some problems such as collaboration for multi-controller or hot backup for controller, etc. Less consideration is given to the deployment of multi-controllers in the scenario where the controller and the link between the control layer and the forwarding layer fail. In view of the above shortcomings, a method of SDN multi-controller deployment based on topology partitioning is proposed. The topology partition algorithm based on minimum f- equilibrium edge cut is studied to determine the number and deployment area of controller, and then a controller deployment algorithm based on out-of-band connection and topology partition is proposed to solve the problem of distance imbalance between controller and forwarding device. The experimental results under the campus network environment show that this method can achieve a high reliable SDN control level, and the convergence rate of controller switching can be achieved. The execution efficiency of control instruction and the ability of transmission task guarantee have great advantages.
【作者单位】：苏州科技大学电子与信息工程学院;
【基金】：国家自然科学基金资助项目(61502328,61672371) 国家住建部科研项目(2015-K6-012,2015-K8-035) 江苏省高校自然科学研究面上项目(15KJB520032)
【分类号】：TP393.02

【相似文献】