一种考虑软件定义网络控制节点故障的控制器部署和交换机迁移方法

发布时间：2018-06-05 04:29

本文选题：软件定义网络 + 控制器部署　；参考：《电子与信息学报》2017年08期

【摘要】：在软件定义网络(SDN)中,若控制节点发生不可恢复的故障,则相关交换机需向其他控制节点迁移,这将导致网络性能下降。针对这一问题,该文提出一种考虑SDN控制节点故障的控制器部署和交换机迁移方法。与现有算法仅优化交换机迁移方法不同,该方法同时考虑控制器部署位置的影响。首先利用标号传播算法构造备选子集并划分双层子集,然后在每个子集中选取合适位置部署控制器,最后为子集内节点分配相应的master和slave控制器。实验结果表明,与现有算法相比,所提方法可有效解决交换机迁移后控制器超载的问题;通过调整参数,权衡控制器故障前后网络性能,可明显改善交换机迁移后的控制链路平均时延。
[Abstract]:In software defined network (SDN), if the control node has an unrecoverable fault, the related switch has to migrate to other control nodes, which will lead to the degradation of network performance. In order to solve this problem, this paper presents a method of controller deployment and switch migration considering the fault of SDN control node. Different from the existing algorithms, which only optimize switch migration, this method also takes into account the influence of controller deployment location. First, an alternative subset is constructed by label propagation algorithm and divided into two subsets, then the appropriate location of the controller is selected in each subset. Finally, the corresponding master and slave controllers are assigned to the nodes in the subset. The experimental results show that compared with the existing algorithms, the proposed method can effectively solve the problem of controller overload after switch migration, and weigh the network performance before and after the controller failure by adjusting the parameters. It can obviously improve the average delay of control link after switch migration.
【作者单位】：国家数字交换系统工程技术研究中心;
【基金】：国家973计划项目(2012CB315901,2013CB329104) 国家自然科学基金(61572519,61502530) 国家863计划项目(2013AA013505,2015AA016102)~~
【分类号】：TP393.0

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