基于资源整合的节能虚拟网络重配置算法

发布时间：2018-01-26 13:31

本文关键词： 节能资源整合网络虚拟化　出处：《计算机应用》2016年04期 　论文类型：期刊论文

【摘要】：针对虚拟网络映射中能耗过高、接收率偏低和负载不够均衡等问题,提出一种基于虚拟资源整合的综合性重配置算法——HEAR算法。该重配置算法分为两个阶段:节点重配置阶段优先将映射虚拟节点最少的物理节点上的虚拟节点及其相连虚拟链路迁移,挂起或关闭空负载的物理节点来达到节能的目的;此外对这些迁移节点的目标物理节点进行筛选,避免选择过度拥塞的物理节点达到提高接收率和均衡负载的目的。链路重配置阶段采用能耗感知的方法选择可用于迁移的物理链路集合,再用Dijkstra算法选择最短物理路径并将相关路径迁移过去。实验结果表明,HEAR算法比启发式重配置算法平均能耗下降约20%,接收率提高约10%。
[Abstract]:Aiming at the problems of high energy consumption, low reception rate and unbalanced load in virtual network mapping, etc. A comprehensive reconfiguration algorithm based on virtual resource integration, head algorithm, is proposed. The reconfiguration algorithm is divided into two stages:. The node reconfiguration phase preferentially migrates virtual nodes on the physical nodes that map the least number of virtual nodes and their connected virtual links. Suspending or closing the physical nodes of empty load to achieve the purpose of energy saving; In addition, the target physical nodes of these migrated nodes are filtered. The purpose of improving the reception rate and balancing the load is to avoid selecting overcongested physical nodes. In the link reconfiguration phase the energy-consumption aware method is used to select the physical link set that can be used for migration. Then Dijkstra algorithm is used to select the shortest physical path and transfer the related path. The experimental results show that the average energy consumption of our algorithm is about 20% lower than that of the heuristic reconfiguration algorithm. The receiving rate increased by about 10.
【作者单位】：山东师范大学信息科学与工程学院;
【基金】：国家自然科学基金资助项目(61373149)~~
【分类号】：TP393.01
【正文快照】： 0引言随着网络虚拟化技术的发展,各种不断改进的映射方法都能够显著地提高虚拟网请求的接收率,越高的物理网络利用率使得基础设施提供商和网络服务提供商都能够获得更多的收益[1]。然而随着虚拟网请求生存周期的结束,该请求离开的同时会使得底层网络资源碎片化,导致即使在当前

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