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1、EvaluationofOpenFlowControllersGuillermoRomerodeTejadaMuntanerOctober15,2012AbstractThemainobjectiveofthisprojecthasbeentoperformastudyandevaluationofdi er-enttypesofOpenFlowcontrollersthatexisttoday.Initially,hasbeenperformedadetailedstudyontheOpenFlowtechnolog
2、yanddi erenttypesofcontrollersthatcanbeimplemented(amongothertheNOX,Beacon,Trema,SNACandMaestroControllers).Then,havebeendesignedtwoapplications,usingBeaconandTremaControllers,bothapplicationswiththesamepurpose:redirectthePingmessages.Finally,havebeenevaluatedth
3、esetwoapplicationsdesignedandlearning-SwitchapplicationofthefollowingControllers:NOX,Beacon,TremaandMaestro.OpenFlowisanewtechnologybasedontheSoftware-De nedNetworking(SDN)conceptthatconsistsinbreakwiththeconventionalmodelofnetworkwhereistheSwitchthatdecidesthea
4、ctionsthathavetodo.OpenFlowtechnologyseparatestheControlPlanefromtheDataPathandthisallowsfornetworkresearcherstodeveloptheirownalgorithmstocontroldata
owsandpackets.OpenFlowtechnologyimplementsthecontrollogiconanexternalcontroller(typicallyanexternalPC)andthisco
5、ntrollerisresponsiblefordecidingtheactionsthattheSwitchmustperform.ThecommunicationbetweenthecontrollerandtheDataPathismade,onthenetworkitself,usingtheprotocolthatprovidesOpenFlow(OpenFlowProtocol).Thereisanon-pro torganizationcalledOpenNetworkFoundation(ONF),or
6、ganizationthatisresponsibletocontrolandpublishthedi erentOpenFlowspeci cationsandwillgivethetrademarklicense"OpenFlowSwitching"tocompaniesthatadoptthisstandard.AbstractDetfr•amstasyftetmeddettaprojektharvaritattg•oraenstudieochutv•arderingavolikatyperavOpenFlows
7、tyrenhetersom nnsidag.Inledningsvis,hargenomf•orteningaendeunders•okningavOpenFlowteknikocholikatyperavregulatorersomkangenomf•oras(blandannatNOX,Beacon,Trema,SNAC-ochMaestro-styrenheter).Sedan,harutformatstvapro-grammedBeaconochstyrenheterTrema,badaans•oknin
8、garnamedsammasyfte:omdirigeraPing-meddelanden.Slutligen,harutv•arderatdessatvautformadeprogramochl•arande-Switchtill•ampningenavf•oljandestyrenheter:NOX,Beacon,Trema
