企业级网络虚拟映射带宽与能耗优化平衡策略

摘要

利用现有的网络环境运行大规模数据分析和处理任务是企业当前的实际需求,满足需求的途径之一是网络虚拟化技术.相比于云平台虚拟网络映射以最大化收益为出发点,企业级网络虚拟映射要以降低运行费用为目标,同时考虑节点间链路带宽小的特点.以能源和带宽消耗优化为目标,建立了整数线性规划模型,首先确定虚拟节点和链路映射到底层物理节点和链路的位置;其次确定采用哪条链路传输所需镜像.实验参数来源于实际值,分析了单一优化模型和该模型在实验数值上的差异,最终证明该模型可以在带宽消耗优化和能耗消耗优化取得较好的平衡.%The actual needs of enterprises are to operate the big data tasks for analyzing and processing by using the current environment of networks.The way to meet the demand is the technology of network virtualization.The goal of the virtual network embedding in cloud is to maximize profits of cloud providers,but the goal of virtual network embedding in enterprise network is to decrease the costs of running expense under the condition that the bandwidth between nodes is very small.For the purpose of consumption optimization in the terms of energy and bandwidth,this paper presented the integral linear programming model.The first step was to determine mapping positions between virtual nodes and physical nodes in the basement,as well as the mapping positions between virtual links and physical links.The second step was to choose the link used to transfer the desired image.The parameters in experiments were set by the actual data.The experiments analyzed the differences between single optimization and this proposed model.The results indicate that the trade-off between energy and bandwidth consumption can be acquired.