SDN-based ECMP algorithm for data center networks

Hailong Zhang, Xiao Guo, Jinyao Yan, Bo Liu, Qianjun Shuai
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引用次数: 20

Abstract

With the limitation of port densities in the highest-end commercial switches, topologies of data center network often take the form of a multi-rooted tree with higher-speed links. In order to achieve multipath transmission, data center uses Equal Cost Multipath (ECMP) algorithm to forward flows. ECMP algorithm is lack of dynamic scheduling mechanism. In this paper, we completed a full implementation of three scheduling algorithm in the data center network of SDN architecture. One is based on OSPF algorithm. The second is based on ECMP algorithm. In the third algorithm, we optimized the ECMP algorithm through OpenFlow protocol and made it possible to dynamically adjust the flow forwarding link according to the bandwidth utilization of core links. The evaluation results demonstrate that the third scheduling algorithm can improve performance of throughput in data center networks.
基于sdn的数据中心网络ECMP算法
由于高端商用交换机端口密度的限制,数据中心网络的拓扑结构通常采用具有高速链路的多根树的形式。为了实现多路径传输,数据中心采用ECMP (Equal Cost multipath)算法转发数据流。ECMP算法缺乏动态调度机制。本文在SDN架构的数据中心网络中完成了三种调度算法的全面实现。一种是基于OSPF算法。第二种是基于ECMP算法。在第三种算法中,我们通过OpenFlow协议对ECMP算法进行了优化,使得可以根据核心链路的带宽利用率动态调整流量转发链路。评估结果表明,第三种调度算法可以提高数据中心网络的吞吐量性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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