资源描述：
《fiber-based atm computer network performance and survivability issues under soft failure co》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Fiber-BasedATMComputerNetworkPerformanceandSurvivabilityIssuesUnderSoftFailureConditionsIgorKosticAMaster’sThesisSubmittedtotheFacultyoftheBradleyDepartmentofElectricalandComputerEngineeringofVirginiaPolytechnicInstituteandStateUniversityinpartialfulfillm
2、entoftherequirementsforthedegreeofMasterofScienceinElectricalEngineeringIraJacobs,ChairScottMidkiffRickClaus12August1999Blacksburg,VirginiaKeywords:SoftFailures,ATM,OpticalFiber,ComputerNetworksCopyright1999,IgorA.KosticFiber-BasedATMComputerNetworkPerfor
3、manceandSurvivabilityIssuesUnderSoftFailureConditionsIgorKostic(ABSTRACT)Inthisresearchasuspected“gray”areaincomputernetworkperformancethatmightexistbetweenthenetwork’soptimumperformanceandcompletenetworkfailurewasinvestigated.Changesinperformancewerestud
4、iedasseenbytheapplicationlayerofthenetworkasattenuationwasintroducedatthephysicallayerofthenetwork.ThenetworkperformancewasmeasuredforfourgroupsoftestsrunningoverTCPandUDP.Variousscriptsemulatingdifferentnetworkapplicationswereused.Ultimatelytheperformanc
5、ewasevaluatedatdifferentopticalpowerlevels,basedonthroughput,transactionrate,responsetime,andlostdata.Additionally,thebiterrorratecharacterizationoftheattenuatedopticalfiberlinkwasanalyzed.Ultimately,performanceofthefiberopticATM-basedcomputernetworkassee
6、nbytheuserwascorrelatedwithopticalpowerdegradationintroducedinthephysicallayer.Adecreaseinperformancewasfoundasattenuationwasincreased,evenintherangeof“normal”operatingconditions.Asexpected,TCP,althoughnotimmunetosoftfailures,performedbetterthanUDP.Adescr
7、iptionoftheinvestigation,tests,scripts,methodsandresultsareincluded.AcknowledgementsRobertMonineandRogerHawkofOlicom,fortheuseof,andexpertiseonOlicomATMswitchesandOlicomATMNetworkInterfaceCards.RobertMartin,SteveEngemen,BillLindblomandRonMontgomeryofForce
8、,Inc.,forgeneroushelpwithBERmeasurements,opticalpowermetersandvariableattenuators.WarrenStuart,LeoGuzynski,JulieCantando,andAnn-ChristinM.PautzofGanymedeSoftware,Inc.forassistanceandguidancewithChariotSoftware.TomPa
