宽频电信乙太网路之技术与趋势(英文版).ppt

寬頻電信乙太網路之技術與趨勢,outline,IntroductionMetroEthernetForumCarrierClassEthernetEthernetDemarcationSummary,Ethernet,Mostpopularpacket-switchedLANtechnologyBusandStartopologiesBandwidths:10Mbps,100Mbps,1Gbps,10GbpsCSMA/CDCS=carriersenseSendonlyifmediumisidleMA=multipleaccessCD=collisiondetectionStopsendingimmediatelyifcollisionisdetectedExponentialBackoff,WhydidEthernetWin?,PricePerformanceAvailabilityEaseofuseScalability,WorldwideEthernetbasedServicesMarketSize,TelecomEquipmentfor2005(HR2004),EthernetServices2003-07(IDC),BroadbandServiceTrends,Source:InfoneticsApril2005,WirelessSubscribers,Source:IDC,Yankee,EMC,BroadbandSubscribers,Source:IDC,Yankee,EMC,andbytheway,.Customerswantallofthese,deliveredviaasingle,convergednetwork.Enterprise&residentialBest-effort&bulletproof.,Video,voice&dataMobile&fixed,viathesameEthernet-enabledinfrastructure,MetroCarrierEthernet,TheNewNetworkArchitecture,BusinessSubscriber,ServiceProvider,Nationwide/GlobalCarrierEthernet,Transport,ResidentialSubscriber,ANewNetworkArchitecture,VideoSource,Internet,Voicegateway,Voice/VideoTelephony,HDTVTVoD,VoD,VideoSource,GamingBusinessBackup,ERP,BroadbandWireless,BusinessBroadband,E-LineandE-LANservice,FTTxandDSLAMBackhaul,Wirelessdata/videoNetworkinMotion,ResidentialTriple-Play,CarrierEthernet,WhatsCarrierEthernet,ScalabilityServicesandBandwidth100,000sofEVCsFromMbpstox10GbpsCustomerdataintegrity,Protection50msProtectionEndtoEndPathProtectionAggregatedLine&NodeProtection,HardQoSGuaranteedendtoendSLAEndtoEndCIRandEIRBusiness,Mobile,Residential,TDMSupportSeamlessintegrationofTDMCircuitEmulationServicesSupportexistingvoiceapplications,ServiceManagementFastservicecreationCarrierclassOAMcapabilitiesCustomerNetworkManagement(CNM),CarrierEthernet,WhatistheMEF?,TheMetroEthernetForumisanon-profitorganizationcharteredwiththemissionofacceleratingWorldwideAdoptionofCarrierclassEthernetNetworksandServices.TheForumiscomprisedofleadingserviceproviders,majorincumbentlocalexchangecarriers,topnetworkequipmentvendors,testequipmentvendorsandotherprominentnetworkingcompaniesthatshareaninterestinmetroEthernet.TheMEFhasover65membersasofMarch2005.,AboveNetActelisAdvaOpticalNetworksAgilentTechnologiesAlcatelAlteraAMCCAtricaAT&TAxerraNetworksAxxessitBellSouthBritishTelecomCienaCorp.CiscoSystemsColtTelecommunicationsCorrigentSystemsCovaroNetworksDiatem,EricssonExtremeNetworksFoundryNetworksFranceTelecomR&DLLCFujitsuNetworkCommunicationsFutureSoftHammerheadSystemsHarbourNetworksHatterasNetworks,Inc.HuaweiTechCo.Ltd.IndustrialTechnologyResearchInstituteIometrixIskratelIXIAJuniperNetworksKDDIR&DLaboratories,Inc.,MEFMemberListasofJune6,05,LucentTechnologiesLuminousNetworks,Inc.MahiNetworksMarconiCommunicationsMarvellSemiconductorMet-NetCommunicationsMetrobilityOpticalNativeNetworksNortelNetworksCorp.NTTAdvancedTechnologyCorp.OmniTronSystemsTechnologyPMC-SierraQwestCommunicationsRADDataCommunicationsRazaMicroelectronicsReduxCommunicationsRiverstoneNetworksSBCCommunications,Inc.,ShenickSiemensAGSIINetworkSystems,IncSpirentCommunicationsSunriseTelecomTelcordiaTechnologiesTelcoSystemsTeliaSoneraABTellabsTerachipTpackA/ST-SystemsTransmodeSystemsTranswitchUNH-InterOperabilityLabVerizonCommunicationsWorldWidePacketsZarlinkSemiconductorZTECorporation,MEFMemberListasofJune6,05,CarrierEthernetStandards,ScalabilityMEF9UNITestingMEF11UNIFrameworkMEFUNIIIAMEFUNITypeIIMEFEthernetAggregationIEEE802.1,ProtectionMEF2EthernetProtectionMEF4ArchitectureFrameworkIETFMPLSFastReroute,HardQoSMEF6ServiceDefinitionMEF10ServiceAttributesMEFServiceAttributesIIMEFServiceAttributesTestingMEFServiceDefinitionII,TDMSupportMEF3CESFrameworkMEF8CESImplementationMEFTDMTesting,ServiceManagementMEF7EMSandNMSInfoModelMEFOAMFramework&RequirementsMEFPerformanceMonitoringMEFNEManagementRequirementsIEEE802.1,ITU,CarrierEthernet,CarrierEthernetDrivers,ResidentialTriplePlaywithIPTV100sofTVchannelsVideoondemandVideorecording/playbackInteractivevideoappsMulti-megabitInternetaccessRemotelearningGaming,BusinessUltimateConnectivityDataCenterConsolidationGigabitconnectivitybetweenbusinessesStorageanddisasterrecoveryGuaranteedratemulti-megabitInternetaccessVideoconferencing&broadcastBusinesstelephony,MobileWirelessbackhaulWi-FiAccessdeliveryWiMAXinfrastructure3GandbeyondwirelessNextgendataservicesHighresolutionphotoWirelessvideoGamingDigitalTV,SupportingBusinessServices,Any-to-anyLayer2VPNtointerconnectmultiplelocationstransparentlyandeffectively(withhighandguaranteedbandwidth)Supportingtheconvergenceofdataandvoice,Branch,ISP,Nationwide/GlobalCarrierEthernet,IP,Branch,Branch,Branch,HQ,Internet,E-LAN,SupportingTransportforIPNetwork,Nationwide/GlobalCarrierEthernet,IP,IP,IP,E-LANconnectionsamongroutersAnylogicalIPtopology,multipleEVCsofasinglephysicalinterfaceItsupportsallbusinessIPservices,fromIPVPNtoInternetaccess,R,R,R,R,R,R,R,R,R,R,R,R,SupportingTVDistributionService,Subscribers,Nationwide/GlobalCarrierEthernet,IPDSLAM,1.Multicasttree(s)is(are)establishedwithQoSguaranteed,2.Subscribers(theSet-Top-Box)sendsrequestforachannel,3.CarrierEthernetfilters,onlyreplicatesandforwardstherequestedchanneltothesubscribers,4.Videosourceprotectionandnetworkprotectionaresetupautomaticallyuponrequirement,L2DSLAM,IPDSLAM,L2DSLAM,IPDSLAM,IPDSLAM,L2DSLAM,SupportingVoDService,Subscribers,Nationwide/GlobalCarrierEthernet,IPDSLAM,1.AnE-LANconnectionisestablishedbetweenDSLAMsandVoDservers,2.Subscribers(theSet-Top-Box)sendsrequesttoRSMforamovie,3.RSMfinds/informsthebestVoDserver,acknowledgesubscribersofsuch,L2DSLAM,IPDSLAM,L2DSLAM,IPDSLAM,IPDSLAM,L2DSLAM,E-LAN,4.ThesubscriberestablishesRTPandRTSPsessionwithVoDandCommandserverrespectively,SupportingVoIPService,Subscribers,Nationwide/GlobalCarrierEthernet,IPDSLAM,L2DSLAM,L2DSLAM,IPDSLAM,L2DSLAM,1.AnE-LANconnectionisestablishedbetweenWANrouterstobuildanIPWAN,L2DSLAM,L2DSLAM,E-LAN,2.AnE-LANconnectionisestablishedbetweentheDSLAMsandtheIPPoPineachmetro,3.CallercontactstheSIPProxyserverinordertofindtheIPaddressofthecalledparty,4.CallerestablishesRTPsessionwiththecalledpartythroughE-LANconnection,CarrierEthernetfor3G/UMTSBackhaul,GuaranteedQoSFlexibleSLAportfoliosfordifferentusersandservicesFlexiblebandwidthgrowthwithoutnetworkupgradeEfficientnetworkformultimediaapplications(P2P,P2MP,MP2MP)SecureconnectivityforcorporateandconsumerusersSeamlessintegrationwiththewirelinetransportnetworkbothEthernetandTDM,CarrierEthernet,IP,SupportingResidentialTriplePlayServices,Subscribers,Nationwide/GlobalCarrierEthernet,IPDSLAM,L2DSLAM,IPDSLAM,L2DSLAM,IPDSLAM,IPDSLAM,L2DSLAM,Voice,video&datadistribution&backhaul,ServiceProviderBenefits,GreaterRevenuePotential-GranularBandwidthMultipleRevenueStreamsfromSingleInterfaceInternetAccess(E-Line)EthernetVirtualPrivateLine(E-Line)VirtualPrivateLANService(E-LAN)BTVandVoD(TriplePlay)VASEnabled(VoIP,L3VPN,TDM/CESetc.)LowerCapitalCostsLowerOPEXCostsHigherCustomerRetention,EthernetDemarcation,WhatisEthernetDemarcation?,UNI,UNI,MediaConvrtr.,MediaConvrtr.,CarrierEdge,CarrierEdge,MediaConvrtr.,MediaConvrtr.,100FX,100FX,Cust.Eqpmnt.,Cust.Eqpmnt.,EthernetDemarcationNecessaryatcarriertocustomerinterface(UNI)ProvidesseparationbetweencarrierWANandenterpriseLANEnablestestingandmonitoringofbothLANandWANIEEE802.1ajstandardstartedMar05,CarrierNW,100FX,100BT,100BT,DemarcationDevice,UNI,CarrierWANNetwork,Cust.LANNetwork,Cust.LANNetwork,EthernetDemarcation:HistoryRepeatsItself,Ethernet10/100BTDemarcationpoint:mediaconverter,L2switch,ADM,andnowdedicateddevices,LegacyServices(egFrameRelay)Demarcationpoint:Smartjack,CSU/DSUorNTE.,Smartjack,CSU/DSUorNTE,V.35,CarrierNetwork,DemarcationPoint,ADM,ModemorMediaconverter,DemarcationiscriticaltoscalingEthernetServices,CarrierNetwork,DemarcationPoint,Switch/Router,CustomerNetwork,E1/T1,Switch/Router,CustomerNetwork,ADMorModem,EoX,100BT,100BT,EthernetDemarcationDevice,EthernetDemarcation,TwokeyfunctionsforEthernetdemarcationEthernetNID(NetworkInterfaceDevice)orNetworkTerminationEquipment(NTE)Link/ServicelayerEthernetOAM802.3ah&802.1agEthernetServiceUNI(UserNetworkInterface)ServicelayerpolicinganddefinitionMEF/ITUFunctionsmaybeinstandalonedevicesorintegratedintofirstmiletransportdevicesorCPEequipment,10/100BT,CustomerPremise,DemarcationDeviceUNI&NID/NTE,CarrierNetwork,CarrierNetwork,DemarcationPoint,CustomerNetwork,100FX,GbEorEoX,ADM,ModemorMediaconverter,10/100BT,Cust.Eqpmnt.,UserNetworkInterface(UNI),10/100BT,UserNetworkInterface(UNI),CarrierNetwork,EoX,UserNetworkInterface(UNI)functionmustbeatcustomer/carrierdemarcationpointEspeciallyifaccesslinkrequiresratelimitingfortransportMEFbasedservicedefinition(UNI)onportorEthernetVirtualCircuit(EVC)basisCIR/EIRCommitted/ExcessInformationRateCBS/EBSCommitted/ExcessBurstSizeTrafficclassification/prioritybasedonTOS/DSCP/802.1P/802.1Q/etc.LowlatencyhandlingofVoIP/videoservicesEthernetVirtualCircuit(EVC)orVLANsupport802.1Q&Q-in-Q-Add,remove,swapandstackingofVLANtags,50M,10M,CustomerPremise,ADM,ModemorMediaconverter,CustomerEquipment,CarrierNetwork,NetworkInterfaceDevice(NIDorNTE),10/100BT,NID/NTE,EoX,Carriervisibilityofcustomernetwork,Carriervisibilityofcarriernetwork,NIDorNTErequiredatcustomerhandoffforOAMAnalogoustosmartjack,CSU/DSUorNTEforframerelayLinkOAM(802.3ah)isnecessarybutnotsufficientPerformancemonitoringandthresholdcrossingalarmsRemotefailureindication-Dyinggasp,linkfault&criticaleventRemoteloopback(Port)Services/ConnectivityOAM(802.1ag,ITU,MEF,etc.)ContinuityverificationServicelevelloopbackAIS/RDIorfaultpropagationTestheadtogeneratetestsuites(RFC-2544)Cableintegritytestforcustomerpremise,Cust.Eqpmnt.,CustomerPremise,Discovery,AllowsprovideredgeswitchtodeterminetheOAMcapabilityoftheremotedemarcationdevice802.3ahOAMsupportis“optional”IfbothendssupportOAM,thenthetwoendsexchangestateandconfigurationMode-activevspassiveOAMPDUsizeIdentityLoopbacksupport,10/100BT,DemarcationDevice,CarrierNetwork,EoX,Cust.Eqpmnt.,DiscoveryMsg(Active),CustomerPremise,DiscoveryResponse(Passive),PerformanceMonitoringforSLAConformance,10/100BT,CarrierNetwork,EoX,Visibility,CarrierNetwork,CustomerNetwork,CollectedonportandEVC(VLAN)basisFrombothsidesofdemarcationpointRMONEtherstatsarentenough,extensionsfor:Discardedpackets(outofSLA),averagebitrateparameters,ingressvs.egressBW,etc.15minute/24hourcollectionintervalswithhistoryThresholdcrossingalerts/notificationReal-timeviewofserviceperformanceReportsforcustomervalidationmonthlyandweb,Cust.Eqpmnt.,DemarcationDevice,RemoteFailureLinkFault/CriticalEvent,10/100BT,CustomerPremise,DemarcationDevice,DemarcationPoint,EoX,LinkFaultmsg,LinkFaulte.g.LossofsignalisdetectedbythereceiverSentoncepersecondCriticalEventManufacturerspecifiedfailureeghardwareorsoftwarealarmSentimmediatelyandcontinuously,CarrierNetwork,Cust.Eqpmnt.,RemoteFailure-DyingGasp,10/100BT,CustomerPremise,DemarcationDevice,CarrierNetwork,DemarcationPoint,EoX,ADM,ModemorMediaconverter,DyingGaspmsg,Signalscarrierthatanunrecoverablelocalfault(e.g.powerfailure)hasoccurredSentimmediatelyandcontinuouslyCriticalforbothACandDCpoweredcustomerpremiselocatedequipment,Cust.Eqpmnt.,CustomerPremise,EthernetPortLoopback,10/100BT,CustomerPremise,DemarcationDevice,CarrierNetwork,Loopback,PortleveltestingisidealforturnupandcommissioningEliminatestruckrollsWorkswithcentraltestheadtoperformRFC-2544testsMeasuresperformance(delay,droppedpackets,throughput,etc.)IdealforfaultisolationandlocatingwithincarriernetworkCanalsoworkwithintegratedtestheadforend-to-end(servicelevel)RFC-2544verificationIdealforend-to-endSLAverification,DemarcationDevice,CustomerEquipment,CustomerPremise,Selective(Non-Intrusive)Loopback,10/100BT,CustomerPremise,CarrierNetwork,SelectiveLoopback,SelectiveloopbackperformedonVLANorspecificOAMframes(eg.opcode:ETH_LB)IntrusivelytestofanindividualEVC(VLAN)whileremainingEVCsarein-serviceAlsousedforcontinuitycheckandserviceassuranceFar-endtestheadexecutestestperiodicallyonnon-serviceaffectingVLANorOAMframetoverifyendtoendconnectivitythroughentirenetworksimilartopingCanmeasuredelay,throughput,droppedframesofend-to-endservicefollowsactualdatapath(LSP,etc.)ofcustomertraffic,TestPattern,TestHead,CustomerTraffic,DemarcationDevice,DemarcationDevice,Cust.Eqpmnt.,CableIntegrityTesting,10/100BT,CustomerPremise,DemarcationDevice,CarrierNetwork,DemarcationPoint,EoX,Identifiesopens,shortsandimpedanceproblemswithCAT-5cableoncustomerpremiseMeasuresdistancetocablefaultAddresseslargepercentofcustomerinducedissues,Cust.Eqpmnt.,RemoteFault,EthernetAIS/RDI,UsedtosuppressdownstreamalarmsandeliminatealarmstormsfromasinglefailureCommonlyusedinlegacyserviceslikeSONET,TDM,framerelay,etc.,InsertAIS,AlarmsSuppressed,ReportAlarm,FaultPropagation,10/100BT,CustomerPremise,DemarcationPoint,EoX,FaultPropagationallowsupstreamlinkissuestopropagatedownstreamCriticalforenduserapplicationsthatneedvisibilityofnetworkissuesEgRedundantroutingprotocols(HSRP),DemarcationDevice,CarrierNetwork,Cust.Eqpmnt.,LinkdownAISRXJABBERRFIDUPUNKNOWN,LinkdownAISDonothing,Propagation,DemarcationForSLAConsistency,100BT,EoSONET,CustomerLocation3,ADM,ADM,100FX,GbE,CarrierIPNetwork,CustomerLocation2,CustomerLocation1,SophisticatedQoSVLANbasedservicesMonitoringonport&VLANDetailedstatistics,LimitedQoSSimpleportlevelservicesMonitoringonportonlyLimitedstatistics,100BT,ADM,100BT,EthernetDemarcationDeviceSophisticatedQoSVLANbasedservicesMonitoringonport&VLANDetailedstatistics,EthernetdemarcationdeviceprovidesSLAconsistencyregardlessoftransporttechnologye.g.ADMmadetolooklikeopticalEthernet,DemarcationDevice,DemarcationForOAMCapabilities,EoSONET,CustomerLocation3,ADM,ADM,100FX,GbE,CarrierIPNetwork,CustomerLocation2,CustomerLocation1,100BT,100BT,EthernetdemarcationdeviceprovidesOAMcapabilityforremotemanagementPerformancemonitoringRemotefailureindicationRemoteloopbackContinuitytestingRemotetestheadCableintegritytesting,etc.,DemarcationDevice,1000BT,DemarcationDevice,MediaConverter,100BT,1000BT,100BT,DemarcationDevice,MediaConverter,Summary,MetroEthernetForumwebsite:http:/www.metroethernetforum.orgCarrierClassEthernetProtectionHardQosTDMsupportScalabilityServicemanagementEthernetDemarcationPerformancemonitoringLoopbacktestFailurealarm,