1/31
文档分类:资格/认证考试

End-to-End Inference of Router Packet Forwarding Priority.ppt


下载后只包含 1 个 PPT 格式的文档,里面的视频和音频不保证可以播放,查看文件列表

特别说明:文档预览什么样,下载就是什么样。

0/100
您的浏览器不支持进度条
下载所得到的文件列表
End-to-End Inference of Router Packet Forwarding Priority.ppt
文档介绍:
End-to-EndInferenceofRouterPacketForwardingPriorityGuohanLu1,YanChen2,StefanBirrer2,FabianE.Bustamante2,ChiYinCheung2,work,TsinghuaUniv.&SecurityTech,NorthwesternUniv.12BackgroundRouterQoSmechanismsavailablePriorityQueueingCustomQueueingClass-BasedWeightedFairQueueingTrafficpolicing/shapingISPsdousethemRatelimiting,e.g.,P2PapplicationsProvidebandwidthguaranteeforcertainapplications3MotivationPacketforwardingpriorityaffects:measurements,loss,delay,availablebandwidthapplicationsHiddenrulesEnd-to-endapproachPOPI(PacketfOrwardingPriorityInference)Thefirstsuchworktothebestofourknowledge4OutlineBackgroundandMotivationInferenceMethodsEvaluationsConclusions5BasicIdeasPrioritygeneratespacketdeliverydifferencesMeasurethedifferencesSenddifferentpackettypesChooseametricLoss:themostnaturalchoiceDelay:queuingdelaymaybesmallOut-of-order:notallQoSgenerateOOO,butveryinterestingworkwehaveinprogress6ChallengesandBuildingBlocksChallengesBackgroundtrafficfluctuationsPacketlossescanbehighlycorrelatedPOPIDesignStep1:GeneratethedifferencesSaturatelow-priorityqueue(s)temporarilyStep2:DetectthedifferencesNon-parametricstatisticalmethodsindependenttothelossmodelandinsensitivetolosscorrelationStep3:ClustermultiplepackettypesintogroupsHierarchicalclusteringmethod7Step1:ProbingApproachesSendburstsSpectrumofapproachesSmallbursts:lessaggressive,waitforthelossesLargebursts:moreaggressive,urateLongerperiod8ProbingMethodnbbursts,nrrounds,BAACB9Step2:DetecttheDifference–AverageLossRanks(ANR)0.10.30.20.50.60.4Burst1ABCDEF132564Burst20.30.20.10.60.50.80.20.10.30.80.50.40.00.00.10.70.70.8Burst3Burst41.51.534.54.562**********ANR0.320.330.360.770.830.90SmalldifferenceforthesamegroupLargedifferencefordifferentgroupsk=6,nb=4,nr=10LossratesLossranksLossratesLossranksLossratesLossranksLossratesLossranks0.70.3ABCDEF10 内容来自淘豆网www.taodocs.com转载请标明出处.