1、INTERNATIONAL STANDARD ISO/IEC 9314-4First edition 1999-10 Information technology Fibre distributed data interface (FDDI) Part 4: Single-mode fibre physical layer medium dependent (SMF-PMD) Reference number ISO/IEC 9314-4:1999(E)INTERNATIONAL STANDARD ISO/IEC 9314-4First edition 1999-10 Information
2、technology Fibre distributed data interface (FDDI) Part 4: Single-mode fibre physical layer medium dependent (SMF-PMD) ISO/IEC 1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, includ
3、ing photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office Case postale 56 CH-1211 Genve 20 Switzerland PRICE CODE U For price, see current catalogue2 93144ISO/IEC:1999(E) CONTENTS Page FOREWORD.4 INTRODUCTION5 Clause 1 Scope7 2 Normativereferences. 8
4、3 Concepts . 9 3.1 GeneralDescription 9 3.2 Environment 10 3.2.1 DataCenterEnvironment 10 3.2.2 Office/BuildingEnvironment 10 3.2.3 CampusEnvironment 10 3.2.4 MulticampusEnvironment 11 3.3 Definitions. 11 3.4 Acronyms 14 3.5 Conventions 15 4 Services. 18 4.1 GeneralDescription 18 4.2 PMDtoPHYService
5、s . 18 4.2.1 PM_UNITDATA.request. 19 4.2.2 PM_UNITDATA.indication 19 4.2.3 PM_SIGNAL.indication 20 4.3 PMDtoSMTServices. 20 4.3.1 SM_PM_CONTROL.request 21 4.3.2 SM_PM_BYPASS.request . 21 4.3.3 SM_PM_SIGNAL.indication . 22 5 MediaAttachment 24 5.1 General. 24 5.2 MediaInterfaceConnector 24 5.2.1 Keyi
6、ngDetail. 26 6 MediaSignalInterface 27 6.1 GeneralDescription 27 6.2 ActiveOutputInterface 28 6.2.1 Characteristics 28 6.2.2 PulseEnvelopeTest 28 6.3 ActiveInputInterface 31 6.4 StationBypassInterface 31 6.4.1 Characteristics 31 6.4.2 StationBypassTimingDefinitions 33 7 InterfaceSignals 3 3 7.1 Gene
7、ralDescription 33 7.2 OpticalReceiver 33 7.2.1 Signal_Detect 34 7.3 OpticalTransmitter 3593144ISO/IEC:1999(E) 3 Clause Page 8 CablePlantInterfaceSpecification . 36 8.1 CablePlantSpecification. 36 8.1.1 CablePlantAttenuation. 36 8.1.2 Fibre,Optical 37 8.1.3 Fibre,Dimensions . 37 8.1.4 FixedAttenuatio
8、n 37 8.2 Bypassing . 37 8.3 ConnectorsandSplices. 37 8.3.1 OpticalReturnLoss. 37 AnnexA(informative) TestMethods . 38 AnnexB(informative) CablePlantUsage . 43 AnnexC(informative) ElectricalInterfaceSpecifications. 46 AnnexD(informative) SystemJitterAllocations 49 AnnexE(informative) KeyingConsiderat
9、ions 51 Table1CharacteristicsofCategoryIandIIActiveOutputInterfaces28 Table2CharacteristicsofCategoryIandIIActiveInputInterfaceSignals31 Table3CharacteristicsofCategoryIOpticalBypassImplementations .31 Table4SummaryofClause735 Table5ActiveInput/OutputInterfaceCombinations .36 Table6FibreOpticalParam
10、eters.37 Table7FibreDimensions 37 Figure1FDDILinksandConnections 16 Figure2FDDITopologyExample.17 Figure3DualAttachmentPMDServices23 Figure4ExampleofMediaInterfaceConnector(MIC)Plug25 Figure5SMFMICKeyingDetails(WavelengthOption1).26 Figure6CategoryIPulseEnvelopeTest29 Figure7CategoryIIPulseEnvelopeT
11、est.30 Figure8StationBypassTimingCharacteristics32 Figure9SignalDetectThresholdsandTiming .344 93144ISO/IEC:1999(E) FOREWORD ISO(theInternationalOrganizationforStandardization)andIEC(theInternationalElectro technicalCommission)formthespecializedsystemforworldwidestandardization.National bodiesthatar
12、emembersofISOorIECparticipateinthedevelopmentofInternational Standardsthroughtechnicalcommitteesestablishedbytherespectiveorganizationtodealwith particularfieldsoftechnicalactivity.ISOandIECtechnicalcommitteescollaborateinfieldsof mutualinterest.Otherinternationalorganizations,governmentalandnongove
13、rnmental,in liaisonwithISOandIEC,alsotakepartinthework. Inthefieldofinformationtechnology,ISOandIEChaveestablishedajointtechnical committee,ISO/IECJTC1.DraftInternationalStandardsadoptedbythejointtechnicalcom mitteearecirculatedtonationalbodiesforvoting.PublicationasanInternationalStandard requiresa
14、pprovalbyatleast75%ofthenationalbodiescastingavote. InternationalStandardISO/IEC93144waspreparedbyJointtechnicalCommitteeISO/IEC JTC1 Informationtechnology ,SubcommitteeSC25 ,Interconnectionofinformationtechnology equipment. ISO/IEC9314consistsofthefollowingparts,underthegeneraltitle Informationtech
15、nology FibreDistributedDataInterface(FDDI): Part1:TokenRingPhysicalLayerProtocol(PHY) Part2:TokenRingMediaAccessControl(MAC) Part3:TokenRingPhysicalMediumDependentLayer(PMD) Part4:SingleModeFibrePhysicalLayerMediumDependent(SMFPMD) Part5:HybridRingControl(HRC) Part6:TokenRingStationManagement(SMT) P
16、art7:PhysicalLayerProtocol(PHY2) Part8:TokenRingMediaAccessControl2(MAC2) Part9:FDDILowCostFibrePhysicalMediumDependent(LCFPMD) Part10:TokenRingTwistedPairPhysicallayerMediumDependent(TPPMD) Part13:ConformanceTestProtocolImplementation ConformanceStatementproforma(CTPICS) Part20:PhysicalMediumDepend
17、entConformanceTesting(PMDATS) Part21:PhysicalLayerProtocolConformanceTesting(PHYATS) Part25:AbstractTestSuiteforFDDIStationManagement ConformanceTesting(SMTATS) Part26:MediaAccessControlConformanceTesting(MACATS)93144ISO/IEC:1999(E) 5 INTRODUCTION TheFibreDistributedDataInterface(FDDI)isintendedforu
18、seinahighperformancegeneral purposemultistationnetworkandisdesignedforefficientoperationwithapeakdatarateof 100megabitspersecond.Itusesatokenringarchitecture.ThispartofISO/IEC9314extends thebasicFDDIbyallowingbothmultimodeandsinglemodefibre,(MMFandSMF respectively),astransmissionmedia.ThebasicFDDIpr
19、ovidesforhundredsofstations operatingoveranextentofmanykilometers.Theindividuallinklengthssupportedbythebasic FDDIarelimitedtotwo(2)kilometersbythecharacteristicsofthemultimodefibreitspecifies. ThisextensiontothebasicFDDIstandardallowslinkstoabout60kilometersdependingon cableplantcharacteristics,bym
20、akingitpossibletoincludesinglemodefibrelinksina standardFDDInetwork. TheSinglemodePhysicalLayerMediumDependent(SMFPMD)specifiesthelowersublayer ofthePhysicalLayerfortheFDDI.Assuch,itpresentsthespecificationsforconformingFDDI attachmentdevicesattheinterfacetothesinglemodeopticalnetwork.Thisincludespo
21、wer levelsandcharacteristicsoftheopticaltransmitterandreceiver,interfaceopticalsignal requirementsincludingjitter,theconnectorreceptaclefootprint,therequirementsof conformingFDDIsinglemodefibrecableplants,andthepermissibleBER. SMFPMDprovidesforextensionofthesetofbasicstandardsforFDDIthatincludesthe
22、followingstandards: a) AMediaAccessControl(MAC)standard,whichspecifiesthelowersublayeroftheData LinkLayerforFDDI,includingaccesstothemedium,dataframing,addressing,anddata checking; b) APhysicalMediumDependent(PMD)standardwhichisthealternativestandardtothis document,whenusingMMFratherthanSMF; c) APhy
23、sicalLayerProtocol(PHY)standard,whichspecifiestheuppersublayerofthe PhysicalLayerforFDDI,includingencode/decode,clocking,anddataframing; d) AStationManagement(SMT)standard,whichspecifiesthelocalportionofthesystem managementapplicationprocessforFDDI,includingthecontrolrequiredforproper operationofast
24、ationinanFDDIring; Theideaofdevelopinganewhighspeeddatainterfaceforcomputersbasedontheuseof opticalfibrewasfirstraisedinanOctober1982meeting.Anadhoctaskgroupwasformedto examinetheissuesandthreeprojectproposals,fortheFDDIPhysical,DataLink,andNetwork layersweredevelopedandsubsequentlyapproved. Initial
25、proposalsfortheMediaAccessControl(MAC),correspondingtothelowerhalfofthe DataLinkLayer,andforthePhysical(PHY),correspondingtothePhysicalLayer,wereboth submittedinJune1983.FDDIadoptedthestructuresoftheISO/IEC8802Series,andearly workindicatedthattheFDDIMACcouldbedevelopedtooperateundertheLogicalLink Co
26、ntrol(LLC)describedintheISO/IEC8802series.Thisdecision,ineffect,obviatedthe developmentofLLCorNetworkLayerstandardsuniquetoFDDI.MAChasbeenpublishedas ISO/IEC93142. Inearly1984aneedwasrecognizedforaseparateStationManagement(SMT)document. ThisdevelopmentworkremainsunderwayonISO/IEC93146. Recognizingth
27、atfibretechnologywasnotyetthensufficientlysettledandthatcriticalFDDI developmentworkwasdependentupontheprotocolportionsofthePHYdocument,the PhysicalLayerwasdividedintotwosublayers(PHYandPMD),withthePHYdocument retainingonlytheuppersublayerofthePhysicalLayer.PHYwassubsequentlypublishedas ISO/IEC93141
28、. Meanwhile,issuesconcerningthelowersublayerofthePhysicalLayerformultimodeFDDI werebeingaddressed.ThatworkledtothepublicationofISO/IEC93143FDDIPMD.6 93144ISO/IEC:1999(E) InJune1987theneedwasrecognizedforFDDItosupportstationtostationdistanceslonger thanthe2kilometerslimitoftheMMFdesign.Theprojectobje
29、ctivewastostayascloseas possibletothePMDstandardandinparticulartohavethesameinterfaceswithPHYandSMT. WiththeFDDIMAC,theFDDIPHYandthemultimodeFDDIPMD,theFDDISMFPMD standardrepresentsanalternativePMDinthesetofstandardsthatconstituteFDDI.93144ISO/IEC:1999(E) 7 INFORMATIONTECHNOLOGY FIBREDISTRIBUTEDDATA
30、INTERFACE(FDDI) Part4:Singlemodefibrephysicallayermediumdependent(SMFPMD) 1Scope ThispartofISO/IEC9314specifiestheSinglemodefibrePhysicalLayer MediumDependent (SMFPMD)requirementsfortheFibreDistributedDataInterface(FDDI). FDDIprovidesahighbandwidth(100megabitspersecond)generalpurposeinterconnection
31、amongcomputersandperipheralequipmentusingafibreopticwaveguideasthetransmission medium.TheFDDImaybeconfiguredtosupportasustainedtransferrateofapproximately 80 megabits(10megabytes)persecond.TheFDDImaynotmeettheresponsetime requirementsofallunbufferedhighspeeddevices.TheFDDIestablishestheconnection am
32、ongmanystationsdistributedoverdistancesofseveralkilometersinextent.Defaultvalues forFDDIwerecalculatedonthebasisof1000physicalconnectionsandatotalfibrepath lengthof200kilometers(seetheMACStandardISO/IEC93142orISO/IEC93148). TheFDDIconsistsof: 1) ThePhysicalLayerMediumDependent(PMD)isspecifiedinfoura
33、lternativestandards: a)ISO/IEC93143(FDDIPMD)correspondingtomultimodefibre(MMF)whichactually means“FDDIMMFPMD“. b)ThisstandardISO/IEC93144(SMFPMD)whichcontainstherequirementsforsingle modefibre(SMF)physicalconnectionsbetweenstations. c)ISO/IEC93149(FDDILCFPMD),analternativelowercostmultimodefibre(LCF
34、)for shorterdistances. d) ISO/IEC931410(FDDITPPMD),acoppertwistedpair(TP)alternative. AnFDDIringcanbemadeupofallthesealternatives.(Forsomerestrictionssee6.4). ThePMDprovidesallservicesnecessarytotransportasuitablycodeddigitalbitstream fromstationtostation.TheSMFPMDspecifiesthepointofinterconnection
35、requirementsforFDDIstationsandcableplantsatbothsidesoftheMediaInterface Connector(MIC)forconformingstationsutilizingsinglemodefibre. SMFPMDincludesthefollowing: i) Theopticalpowerbudgetsfortwo(2)categoriesofActiveOutputandActiveInput Interfacesusingsinglemode fibreopticcablesandopticalbypassswitches
36、 ii) TheMICReceptaclemechanicalmatingrequirementsincludingthekeyingfeatures iii) Thesinglemodefibreopticcablerequirements iv) TheservicesprovidedbyPMDtoPHYandSMT 2) APhysicalLayerProtocol(PHY),whichprovidesconnectionbetweenmultimodeorsingle modePMDandtheDataLinkLayer(DLL).PHYestablishesclocksynchron
37、izationwiththe upstreamcodebitdatastreamanddecodesthisincomingcodebitstreamintoan equivalentsymbolstreamforusebythehigherlayers.PHYprovidesencodingand decodingbetweendataandcontrolindicatorsymbolsandcodebits,mediumconditioning andinitializing,thesynchronizationofincomingandoutgoingcodebitclocks,andt
38、he delineationofoctetboundariesasrequiredforthetransmissionofinformationtoorfrom higherlayers.InformationtobetransmittedontheinterfacemediumisencodedbythePHY intoagroupedtransmissioncode. 3) ADataLinkLayer(DLL),whichcontrolstheaccessingofthemediumandthegeneration andverificationofframechecksequences
39、toassuretheproperdeliveryofvaliddatatothe8 93144ISO/IEC:1999(E) higherlayers.DLLalsoconcernsitselfwiththegenerationandrecognitionofdevice addressesandthepeertopeerassociationswithintheFDDInetwork.Forpurposeofthe PHY,referencestoDLLaremadeintermsoftheMediaAccessControl(MAC)entity,which isthelowestsub
40、layerofDLL. 4) AStationManagement(SMT),whichprovidesthecontrolnecessaryatthestationlevelto managetheprocessesunderwayinthevariousFDDIlayerssuchthatastationmaywork cooperativelyonaring.SMTprovidesservicessuchascontrolofconfiguration management,faultisolationandrecovery,andschedulingprocedures. Thispa
41、rtofISO/IEC9314isasupportingdocumenttoISO/IEC93141whichshouldbereadin conjunctionwithit. TheSMTdocumentISO/IEC 93146shouldbeconsultedforinformationpertainingto supportedFDDIstationandnetworkconfigurations. ThesetofFDDIstandardsspecifiestheinterfaces,functionsandoperationsnecessaryto insureinteropera
42、bilitybetweenconformingFDDIimplementations.ThispartofISO/IEC9314is afunctionaldescription.Conformingimplementationsmayemployanydesigntechniquewhich doesnotviolateinteroperability. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext, constituteprovisi
43、onsofthispartofISO/IEC9314.Fordatedreferences,subsequent amendmentsto,orrevisionsof,anyofthesepublicationsdonotapply.However,partiesto agreementsbasedonthispartofISO/IEC9314areencouragedtoinvestigatethepossibilityof applyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundated references,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISO andIECmaintainregistersofcurrentlyvalidInternationalStandards. ISO/IEC 93141:1989,Infor
