基于SDN的數(shù)據(jù)中心網(wǎng)絡(luò)負(fù)載均衡策略

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中圖分類號(hào)：TP393 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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

隨著全球信息技術(shù)的快速發(fā)展和網(wǎng)絡(luò)規(guī)模的不斷擴(kuò)大，數(shù)據(jù)流量呈指數(shù)級(jí)增長(zhǎng)，推動(dòng)了網(wǎng)絡(luò)應(yīng)用服務(wù)提供商在世界各地建立眾多數(shù)據(jù)中心，這些數(shù)據(jù)中心配備了數(shù)百萬臺(tái)服務(wù)器節(jié)點(diǎn)，對(duì)總帶寬有著巨大的需求。（剩余9660字）