预览加载中，请您耐心等待几秒...

SLA----服务等级协议.ppt

预览
1/10
2/10
3/10
4/10
5/10
6/10
7/10
8/10
9/10
10/10

亲，该文档总共41页，到这已经超出免费预览范围，如果喜欢就直接下载吧～

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

SLA----服务等级协议ISP的锐利武器和必由之路内容提要一、什么是SLA?SLA的分类SLA的特点SLAConfigurationWebGoldReportforAcme.com28SLAcalculationswereperformedovertheperiodOct1199912:00:00AM-Oct7199911:59:59PM.16werefoundcompliant9werefoundnon-compliantand3wereundetermined.测量实际服务性能参数-Measureandrecordactualservicetransactiontimes-Measurefullpathsspanningnetworkandservers-Betterreflectscustomeroruserexperience监视服务等级协议的符合情况-Monitoringandmanagementofthekeycomponentsthatprovidetheactualservices-ProvidesanaccurateviewofactualservicequalitydeliveredasviewedbythecustomerSLA报警和快速定位问题-Providespreemptivewarningofdevelopingserviceproblems-Enablesrapidfaultidentificationandisolation提供SLA报告-Performancegraphsenabletrendanalysisfortrackingassetutilizationfuturecapacityplanningreal-timeservicesummaries-CustomerreportingconfirmsQoS为什么SLA变得越来越重要Manageeverchangingtechnologies二、国内外SLA技术的发展动态目前世界上最大的Internet骨干网络提供商基本上都为客户提供了实时/准实时的SLA并在WEB上公开发布骨干网络的SLA报告。AT&TSprintUUNETQwestCable&Wireless越来越多的数据中心采用SLA技术提高市场竞争力和争取客户。例如世界上最大的Hosting公司Verio等第三方独立的SLA测量和报告服务公司涌现KeynoteMIDSAT&TSLAGlossaryBackboneAvailabilityThisistheoverallavailabilityofthenetworkaveragedoverthemonth.BackboneDelayDelay(orlatency)istheround-triptimeforasmalldatapackettotravelbetweentwoendpoints(sourceanddestinationcity-pairs)inthenetworkbackbone.Delayaffectsone'sperceptionoftheresponsetimeofthenetwork.BackboneLossLossisthepercentageofpacketslostinadatatransaction.Themeasurementisaroundtriponemadebycountingthepacketssentbetweentwocity-pairsthatdonotreturn.Distance-SensitiveThresholdsBecausethedelayacrossthenetworkisdependentonthedistancethepacketshavetotravelourthresholdsaresettobedistancesensitive(basedonthespeedoflightinfiber).Thedistances