基于节点可靠度的虚拟SDN映射算法

发布时间：2018-06-13 09:26

本文选题：软件定义网络 + 网络虚拟化　；参考：《计算机应用研究》2017年07期

【摘要】：为应对网络故障,提升网络的可靠性,针对SDN环境设计了节点的可靠度指标,提出了基于节点可靠度的虚拟SDN映射算法。在初始可靠映射阶段,该算法根据节点可靠度指标进行v SDN映射,部署控制器时兼顾了控制器与交换机的时延,同时考虑控制网络的重要性,为控制网络构建相应的备份资源;在故障恢复阶段,针对物理SDN单节点或单链路故障,算法使用迁移方法应对控制节点失效的情况,使用重映射方法应对其他故障。仿真结果表明,算法在请求接受率、故障恢复率、有效承载率和平均控制时延等指标上取得了较好的结果。
[Abstract]:In order to deal with network failures and improve network reliability, a virtual SDN mapping algorithm based on node reliability is proposed for designing the reliability index of nodes in SDN environment. In the initial reliability mapping stage, the algorithm maps the v SDN according to the reliability index of the node. When deploying the controller, the delay between the controller and the switch is taken into account. At the same time, the importance of the control network is considered, and the corresponding backup resources are constructed for the control network. In the stage of fault recovery, for the single node or single link fault of physical SDN, the migration method is used to deal with the failure of the control node, and the remapping method is used to deal with other faults. Simulation results show that the algorithm achieves good results in terms of request acceptance rate, fault recovery rate, effective load carrying rate and average control delay.
【作者单位】：空军工程大学信息与导航学院;
【基金】：国家自然科学基金资助项目(61401499) 陕西省自然科学基金资助项目(2015JM6340) 陕西省工业科技攻关项目(2016GY-087)
【分类号】：TP393.0

【相似文献】