基于SDN的数据中心网络负载均衡策略

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中图分类号：TP393 文献标识码：A 文章编号：2096-4706（2025）11-0121-06

Load Balancing Strategy for Data Center Networks Based on SDN

SHAN Kai1²， YUN Hongyan'，LIU Tiantian' （1.College of Computer Science and Technology，Qingdao University， Qingdao 266o71，China; 2.QingdaoAcademyofTransportationSciences，Qingdao 266ooo，China）

Abstract： Aimingatthe problemsofcurrent loadbalancing algorithms in dealing with trafic indata center networks， suchas lack of globalperspectiveand dynamic adaptabilitydynamicchanges ofpath state，andtoo complicated calculation，a loadbalancing strategy is proposedbasedonthe ideaof separation ofcontroland forwarding proposed bySDN.The strategy distinguishes betweenlargeand smallfows.Largefows usethe perceptionabilityofSDNtocalculate the path set with the fewesthopsbetweenthesourcehostandthedestinationhostandtheoadofthepathset.Thefuzyinferencealgorithmisusedto calculate thescoreofeachpath，andthefowtableisissued to guide theforwarding ofdata packetsonthe path withthe highest score.Smallfowsareforwardedaccording to thefrwarding principleofEqual-Cost Multi-PathThe experimentalresultsshow that ntheFat-Tree topology，thenetwork throughputandlinkutilizationare improvedcompared withECMPand Hedera.

Keywords： data center network;SDN; load balancing; fuzzy logic

0 引言

随着全球信息技术的快速发展和网络规模的不断扩大，数据流量呈指数级增长，推动了网络应用服务提供商在世界各地建立众多数据中心，这些数据中心配备了数百万台服务器节点，对总带宽有着巨大的需求。（剩余9660字）