【正文】
n Diego Pop PVC Jitter Threshold Spec. Type Condition Boundary UnitofMeas GracePeriod GPUnitofMeas. SeverityVariable Static==Envelope100 MillisecondsSecondsMinutesHoursDaysMillisecondsSecondsMinutesHoursDaysWarningMinorMajorCritical3ThresholdSpec2Conformance Operating Operating Period Days HoursHourDayWeekMonthYearMonFriWeekendsn/a8:00am 5:00pm6:00pm 11:00pmn/aSLA TimeSpec3ExpressionsSD_Pop_Availability AND(SD_Pop_PVC_Jitter OR SD_Pop_PVC_SignalQuality)4100%98%80%SLASanDiego Pop PVC SLA CalendarAnniversary5 SLA的配置舉例廣東省電信科學(xué)技術(shù)研究院 6陳文革博士后Web Gold Report for n 郵局送信的例子n 10M/100M端口、機房條件等的承諾???n SLA與通常所說的 QOS是有區(qū)別的n QOS一般針對網(wǎng)絡(luò)而言,而 SLA是用戶感知的服務(wù)質(zhì)量, QOS是實現(xiàn)和保證 SLA的一個環(huán)節(jié)。responseEC,success—providern Availabilityn Round“八菜一湯 ”?finefineprintprintprintatofthatprovideraServiceLevelcontractandguaranteesperformanceafinefinefineprintprint四星級飯店?tripAccessraten AccessASPtime(HTTPn 比如網(wǎng)絡(luò)暢通但是服務(wù)器擁塞?。。 IP網(wǎng)絡(luò)統(tǒng)計復(fù)用、流量突發(fā)的特點導(dǎo)致 SLA也只能以一種統(tǒng)計的方法描述n 平均,最大最小;n 某一性能指標大于某一約定值得概率大于 98%。28 SLA calculations were performed over the period Oct 1, 1999 12:00:00 AM Oct 7, 1999 11:59:59 PM.16 were found pliant, 9 were found nonpliant, and 3 were undetermined. recordtimesfullandBetteruserofthataccurateserviceviewedSLA報警和快速定位問題preemptiveserviceidentificationenabletrackingplanning,reporting商業(yè)服務(wù))n Hosting,n IPFirehunter、n Concord’sVitalSuiten Keynoten MatrixUUNET,isofoverBackbone Delay Delaytheatoenddestinationworkone39。thetheispacketsdataisone,thetwonotdelayisdistancetoaredistancetheinusedmiles.abilityclient39。andtomodemaverageSuccessthetheoverall(PoPs).40istimedownloadingofWebMonday15amtimePerspective measurementlocatedof廣東省電信科學(xué)技術(shù)研究院 27陳文革博士后廣東省電信科學(xué)技術(shù)研究院 28陳文革博士后TheIntertheofthe40sitesthroughbetween9byputersmajormeasurementviaandtheofleadin