MPLS網(wǎng)絡中基于速率的組播樹動態(tài)切換機制的研究與實現(xiàn).pdf

1、東北大學碩士學位論文MPLS網(wǎng)絡中基于速率的組播樹動態(tài)切換機制的研究與實現(xiàn)姓名：蘭艷申請學位級別：碩士專業(yè)：計算機系統(tǒng)結構指導教師：夏利20061201東北大學碩士學位論文AbstractResearchandImplementationOfMulticast1’reeDynamicSwitchoverMechanismBasedonRateinMPLSNetworI‘sAbstractWitllthenourishingdevelop

2、memofmuItiIIlediasen，ice，thefhture口net、vorknotoIlly、villmeetQoSrequirementssllch嬲b肌d嘶dtll，delay，jittcraIldsoon，bmalso研l(wèi)lsupportmultic淞trcalizingmultipo缸commuIlicationThctecllllolog)，ofmultic邪tcansendacopyofdatatomanyreci

3、pientsnrcducestlleloadofsen慣andnetworkeqllipmentsattlle缸hest托dpfovidesusersmorebarld撕dt圭1sAsoneofthecoretechnologiesofnextgenerationImemet，MPLScaIlachieveme如nctionoff瓠tfo九vardingatmesecondleVel鋤droutmgatthetMrdlevel，ensu

4、ringQoSofnet、vorkcommunicationwitlloutquestioIl，re∞archinghoWtoimplementmultic船tonⅧLS謝llbesignificantTherearetvvokindSofmulticast仃ce：Rendez、rousPointTrce限PnandShonestPathTree(SPDRPTissharedbymulti—sourceandlessinfo肌ation

5、itemisstoredinrouterButwitllne“Ⅳorktra丘icaugmenting，more仃afficwillconcen眥eonrootnodehwillbringbomeneck孤dcon2estionwilloccure器ilySPTaskeachsourcet0bIlilditselfmu王ticast缸eeinf|avorofbalancmgnetwork仃a髓cButwhentllereisless咖伍

6、c，thecostofbuildingSPTisbiggerrelativelyTherefore，onb髂eof臼咖[1smmingmulticastdataonRPTinMPLSnetwork，aratebaseddyn鋤ics謝tchoverschemeisproposedWhentherateofsomesot撇ortotalratesonRPexceedsthema)(iln啪threshoId，thcdesignatedro

7、uterofreceiVcrwiIjstaftt0s、vitchover仃omRPTt0SPTWhenmemteofsomesourceisundertheminimumthreshold。thesourcecatlswitchoverbackt0RPTdynamicanyAsresult，wlcnmulticastdatais仃ansmi他donRPTⅡlecostofnct、vorkisreduced。andthetraf!fici

8、sbalancedonindividualLSPSimultalleously，congestionc趾beavoidedalldthcQosofnet、№rkisimprovedThet11esisin仃oducessomecorrespondingtectlnologiesaboutmultic嬲taIldMPLS111capproachisproposedimplementingdyn姍ics塒tchoVerbe帆eenRPTan

9、dSPTinMPLSnetworksByexpand堍andmodi每噸御LsmodukinNS，the矗mctionofmesourceregis鈀ring，tllegr01lpmemberjoining，fb刪ingmultic嬲tda協(xié)卸ddyllamicswitchover、Ⅳitllthena銜calteringisaccomplishedBya越lyziI培ttlesimulationresultandexperimemda