BRKOPT-2114 Ethernet Operations,Administration and

©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr1©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublicBRKOPT-211414366_04_2008_c12EthernetOperations,AdministrationandMaintenance(E-OAM):TechnicalOverviewBRKOPT-2114©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr2©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic3BRKOPT-211414366_04_2008_c1AgendaƒEthernetOAMProtocolOverviewIEEE802.3ah(clause57)IEEE802.1agITUY.1731MEFE-LMIƒEthernetOAMInter-WorkingƒEthernetOAMFaultManagement“InAction”ƒEthernetPerformanceManagement—CiscoIPSLAƒSummary©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic4BRKOPT-211414366_04_2008_c1EthernetOAMProtocolOverview©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr3©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic5BRKOPT-211414366_04_2008_c1DriversforEthernetOAMƒOAMBenchmarksSetbyTDMandexistingWANtechnologiesƒOperationalEfficiencyReduceOPEX,avoidtruck-rollsDowntimecostƒManagementComplexityLargeSpanNetworksMultipleconstituentnetworksbelongtodisparateorganizations/companies©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic6BRKOPT-211414366_04_2008_c1ProblemTaxonomyFaultManagementƒFaultDetectionƒFaultVerificationƒFaultIsolationƒFaultRecoveryƒFaultNotificationConfigurationManagementƒServiceProvisioningPerformanceManagementƒFrameLossMeasurementƒDelayMeasurementƒDelayVariationMeasurementƒAvailabilityMeasurementCarrierEthernetServices©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr4©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic7BRKOPT-211414366_04_2008_c1EthernetOAMBuildingBlocksFaultManagementFaultManagementPerformanceManagementPerformanceManagementConfigurationManagementConfigurationManagementFaultManagementFaultManagementFaultManagementFaultManagementPerformanceManagementPerformanceManagementConfigurationManagementConfigurationManagementPerformanceManagementPerformanceManagementFaultManagementFaultManagementPerformanceManagementPerformanceManagementConfigurationManagementConfigurationManagementConfigurationManagementConfigurationManagement802.3ahE-LMICiscoIPSLAsServiceLayerNetworkLayerTransportLayer802.1ag/Y.1731E-LMI©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic8BRKOPT-211414366_04_2008_c1EthernetOAMDecoderRingƒIEEE802.1agConnectivityFaultManagement(CFM)AlsoreferredasServiceOAMƒIEEE802.3ah(Clause57)EthernetLinkOAMAlsoreferredas802.3OAM,LinkOAMorEthernetintheFirstMile(EFM)OAMƒITU-TY.1731OAMfunctionsandmechanismsforEthernet-basednetworksƒMEFE-LMIEthernetLocalManagementInterface©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr5©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic9BRKOPT-211414366_04_2008_c1CiscoCarrierEthernetOAMProtocolPositioningƒE-LMI—UsertoNetworkInterface(UNI)ƒLinkOAM—Anypoint-point802.3linkƒCFM—End-to-EndUNItoUNIƒMPLSOAM—WithinMPLScloudCoreCustomerProviderBridgesProviderBridgesIP/MPLSBusinessResidentialBusinessResidentialUNIUNINNINNINNIBackboneBridgesBackboneBridgesCustomerEthernetLinkOAMAccessConnectivityFaultManagementAccessE-LMIMPLSOAM©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic10BRKOPT-211414366_04_2008_c1IEEE802.3ah(Clause57)LinkOAM©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr6©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic11BRKOPT-211414366_04_2008_c1LinkOAM(IEEE802.3ah,Clause57)ƒProvidesmechanismsusefulfor“monitoringlinkoperation,”suchas:LinkMonitoringRemoteFailureIndicationRemoteLoopbackControlƒDefinesanoptionalOAMsub-layerƒIntendedforsinglepoint-to-pointIEEE802.3linksƒUses“SlowProtocol”*framescalledOAMPDUswhichareneverforwardedbyMACclientsƒStandardized:IEEE802.3ah,Clause57(nowinIEEE802.3-2005)MACOAM(Optional)LLCHigherLayersPhysicalLayerLANCSMA/CDLayersTransportSessionPresentationApplicationNetworkPhysicalDataLinkOSIModel*Nomorethan10framestransmittedinanyone-secondperiod©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic12BRKOPT-211414366_04_2008_c1IEEE802.3ahKeyFunctionsƒOAMDiscoveryDiscoverOAMsupportandcapabilitiesperdeviceƒLinkMonitoringBasicerrordefinitionsforEthernetsoentitiescandetectfailedanddegradedconnectionsƒFaultSignalingMechanismsforoneentitytosignalanotherthatithasdetectedanerrorƒRemoteLoopbackUsedtotroubleshootnetworks,allowsonestationtoputtheotherstationintoastatewherebyallinboundtrafficisimmediatelyreflectedbackontothelink©2006,CiscoSystems,Inc.Allrightsreserved.Presentation_ID.scr7©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic13BRKOPT-211414366_04_2008_c1IEEE802.3ahOAMEventsƒSetofeventsthatmayimpactlinkoperationƒCriticalLinkeventsLinkFault—FaultintheRxdirectionoflocalDTEDyingGasp—UnrecoverablelocalfailureconditionCriticalEvent—UnspecifiedcriticaleventƒLinkeventsErroredSymbolPeriodEventErroredFrameEventErroredFramePeriodEventErroredFrameSecondsSummaryEvent©2008CiscoSystems,Inc.Allrightsreserved.CiscoPublic14BRKOPT-211414366_04_2008_c1IEEE802.3ahRemoteLoopbackƒFaultlocalizationandlinkperformancetestingƒLoopbackControlOAMPDUisusedtocontrolaremoteOAMclientƒTrafficsentfrommasterloopbackportisloopbackbyslaveport,exceptPauseandOAMPDUOAMMACPHYOAMMACPHYXXMaster