思科网络技术培训之3：连接Cisco设备

©1999,CiscoSystems,Inc.3-1Chapter3AssemblingandCablingCiscoDevices©1999,CiscoSystems,Inc.—3-2ObjectivesUponcompletionofthischapter,youwillbeabletoperformthefollowingtasks:•Identifyandconnectnecessarycomponentstoenableconnectivitybetweenroutersorswitches•IdentifyandconnectnecessarycomponentstoenableWANconnectivityoverserialorISDNBRIconnections©1999,CiscoSystems,Inc.—3-3Objectives(cont.)•Setupconsoleconnectionsbetweenrouters,switchesandaterminal•Documentthephysicaltopology,includingcabletypesandcablelocationsoneachinternetworkingdevice©1999,CiscoSystems,Inc.—3-4core_sw_aISDNCloudLeasedLine/FrameRelayCablingtheCampusLegendFastEthernet/EthernetISDNDedicatedCore_Server©1999,CiscoSystems,Inc.—3-5PhysicalDataLink(MAClayer)LANPhysicalLayerImplementations•Physicallayerimplementationsvary•Someimplementationssupportmultiplephysicalmedia10BaseT802.310Base510Base2802.3Specificationsfor10mbEthernet802.3uSpecificationsfor100mb(Fast)Ethernet10BaseFDIXStandard©1999,CiscoSystems,Inc.—3-6PositioningEthernetintheCampusAccessLayerDistributionLayerCoreLayerEthernet10BaseTPositionFastEthernetPositionAccessLayerDistributionLayerCoreLayerProvidesconnectivtybetweentheenduserdeviceandtheaccessswitch.Nottypicallyusedatthislayer.Giveshigh-performancePCandworkstations100-Mbpsaccesstotheserver.Providesconnectivitybetweenaccessanddistributionlayers.Providesconnectivityfromthedistributiontocorelayer.Providesconnectivityfromtheserverblocktothecorelayer.Providesinter-switchconnectivity.Nottypicallyusedatthislayer.©1999,CiscoSystems,Inc.—3-7ComparingEthernetMediaRequirements10BaseTDuplexmedia-interfaceconnector(MIC)ST©1999,CiscoSystems,Inc.—3-8DifferentiatingbetweenConnectionsAUIconnectorsareDB15ISO8877(RJ-45)connectorsandjacksareslightlylargerthanRJ-11phoneconnectorsandjacksFiberConnectorPort©1999,CiscoSystems,Inc.—3-9UTPDeviceTheRJ-45Connector188Pair4R41234567WirePairTisTipRisRingPair2T2Pair2R2Pair3T3Pair1R1Pair1T1Pair3R3Pair4T4Pin©1999,CiscoSystems,Inc.—3-10UTPImplementationStraight-throughWiresoncableendsareinsameorderPinLabel1RD+2RD-3TD+4NC5NC6TD-7NC8NCCable10BaseT/100BaseTStraight-throughPinLabel1TD+2TD-3RD+4NC5NC6RD-7NC8NCServer/Router81woobwbwggbrwbr18Straight-throughCable81Hub/Switch81woobwbwggbrwbr1－2－3－6©1999,CiscoSystems,Inc.—3-11UTPImplementationCrossoverSomewiresoncableendsarecrossed81woowbwgbgbrwbrCable10BaseT/100BaseTCrossoverPinLabel1RD+2RD-3TD+4NC5NC6TD-7NC8NCPinLabel1RD+2RD-3TD+4NC5NC6TD-7NC8NCCrossoverCable181881wggwbwobobrwbrHub/SwitchHub/Switch©1999,CiscoSystems,Inc.—3-12UTPImplementationofStraight-throughversusCrossoverUseacrossovercablewhenBOTHportsaredesignatedwithanxorneitherportisdesignatedwithanx.Usestraight-throughwhenonlyoneportisdesignatedwithanX.1x2x3x4x1x2x3x4x1x2x3x4x©1999,CiscoSystems,Inc.—3-13CablingtheCampus•Determinethephysicalmediaused-10mbor100mbIndicateswhattypeofCATcableisrequired•Locatinginterfacesonthechassis-determineifoneorbothportshaveanXIndicatesifneedcrossoverorstraight-throughcable100MbpsCat5Crossover10MbpsCat3,4,5Crossover100MbpsCat5Straight-through10MbpsCat3,4,5Straight-through10MbpsCat3,4,5Straight-through©1999,CiscoSystems,Inc.—3-14CablingtheWANCore_Servercore_sw_aISDNCloudLegendFastEthernet/EthernetISDNDedicatedcore_sw_bcore_sw_bISLLeasedLine/FrameRelay©1999,CiscoSystems,Inc.—3-15WANPhysicalLayerImplementations•Physicallayerimplementationsvary•CablespecificationsdefinespeedoflinkPPPFrameRelayEIA/TIA-232EIA/TIA-449X.121V.24V.35HSSIISDNBRI(withPPP)RJ-45NOTE:PinoutsaredifferentthanRJ-45usedincampusHDLC©1999,CiscoSystems,Inc.—3-16DifferentiatingBetweenWANSerialConnectorsRouterconnectionsNetworkconnectionsattheCSU/DSUEIA/TIA-232EIA/TIA-449EIA-530V.35X.21CSU/DSUEnduserdeviceDTEDCEServiceprovider©1999,CiscoSystems,Inc.—3-17DataTerminalEquipmentEndoftheuser’sdeviceontheWANlinkDataCommunicationsEquipment•EndoftheWANprovider’ssideofthecommunicationfacility•DCEisresponsibleforclockingDCEDTEModemCSU/DSUSSSSSSDTEDTEDCEDCESerialImplementationofDTEversusDCEDTE/DCE—Thepointwhereresponsibilitypasses©1999,CiscoSystems,Inc.—3-18FixedInterfaces2500Router—rearviewSerialWANportscanbefixed©1999,CiscoSystems,Inc.—3-19Console1603Router—rearviewEthernetAUIEthernet10BaseTISDNBRIS/TSerialWANportscanbemodular3640Router—rearviewModularInterfacesModuleWANInterfaceCard©1999,CiscoSystems,Inc.—3-20CablingRoutersforISDNConnectionsDetermineifyouneedaBRIS/TorUInterface•RoutershaveoneorbothtypesofportsNoteportLabel©1999,CiscoSystems,Inc.—3-21CablingRoutersforISDNConnections(cont.)!!!WARNING!!!DonotconnectacableintoanISDNportunlessitisfromanISDNswitchorISDNwalljack.IfyouconnectacablefromanyotherdeviceintotheBRIport,youwillruinthenon-ISDNdevice.CiscoRouterISDNBRIport©1999,CiscoSystems,Inc.