ip接入網(wǎng)的報(bào)文平衡測度研究

1、東南大學(xué)碩士學(xué)位論文IP接入網(wǎng)的報(bào)文平衡測度研究姓名：楊艷申請學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)系統(tǒng)結(jié)構(gòu)指導(dǎo)教師：丁偉20080520lP接入網(wǎng)的報(bào)文平衡測度研究AbstractAPacketQuantitativeBalanceStudyonIPAccessNetworkYangYah，DingWeiSoutheastUniversityWithrapidgrowthofInternetbandwidthandthenumberofusers

2、，thereisahigherdemandonnetworkmanagementanddetection，whilenetworkmetricshavesignificantimportanceinthisfieldThestudyonnetworkmetricsfacestwodifficulties：oneistodefinemeaningfulmetrics，theotheristousetheminnetwork，andthel

3、atterincludestwoaspectsaswell：toobtainthemetrics(includingtheobtainmentofvariablesandthecalculationofmetrics)andtosetthethresholdForacCeSSnetwork，whichisapeculiarkindofnetwork，genericmethodsandmetricsarenoteffectiveandha

4、rdtoexploreitsparticularity；Moreoverthenetworktrafficisgrowing，makingtheexistingmetricsandmethodsinappropriateinhighspeednetworkThispapergivesquantitativebalancemetricsofbidirectionalpacketsforbothTCPconnectionandIPacces

5、snetworkbasedonthedirectionofpacketdeliveryprovidesdeepdiscussionandfeasiblesolutions，makingthemetricconvenientandusefulinrealnetworkenvironmentFinallyabalancedetectionsystembasedonSNMPplatformisdesignedandimplementedThi

6、spaperbeginswiththeparticularityofaccessnetwork，anddefinesquantitativebalancemetricsofbidirectionalpacketsforbothTCPconnectionandIPaccessnetworkbasedonthedirectionofpacketdeliveryThetwometricsbelongtodifferentnetworklaye

7、rs：TCPlayerorientedmetricscarrymoresemantemeandareeasyforanalysis，buttheyhavepoorrealtimeperformancesincemaintainingthestateofTCPflowsisneeded；IPlayerorientedmetricsareeasytocalculate，havegoodrealtimeperformanceandaresui

8、tableforhigh—speednetworkmeasurementBytheanalysisofTCPprotocolspecification，howtomaptheformertothelatterisdiscussed，makingthemetricwithbothacademicsupportandgoodrealtimeperformanceInthethirdchapterthekeyissuestoputthepac

9、ketquantitativebalancemetricforaccessnetworkintopracticalUSearediscussed，includingthedatacollectingmethod，thethresholdandthetimebintocalculateitThe‘‘health’’rangeofthemetricisgivenbyreferringtothemethodintheresearchfield

10、ofmedicalmetricsthustwolines—一“redline”and“yellowline”areestablishedasthestaticthresholdtoevaluateandwatchthestateofbidirectionalpacketquantitativebalanceAftertheanalysisanddataevaluation，theadaptivefilteringmethodissele

11、ctedoutofothermethodstochangethethresholddynamicallysomeimprovementismadeandtheanomalydetectionmethodisintroducedonthatbaseAfterthesyntheticalanalysisfrommultipleperspectives，inludingthemodeleffectiveness，theefrectonnetw

12、orkperformanceandtherestrictionofSNMPdatacollectingplatform，apropertimebinisgivenThefourthchapterfocusesonthesystemdesignandimplementationThesystemarchitectureisintroducedfirst，followedbythemodulesdesignandimplementation

13、andotherkeydetailsThenthetestofthesystemisintroduced，indicatingthatthesystemhasaccomplishedtheexpectationinfunctionFinallyasummaryisgivenandtheexpectationoffutureworkisproposedaswell[KeyWords]NetworkmanagementNetworkdete