1、 1999, Cisco Systems, Inc. 3-1Chapter 3Assembling and Cabling Cisco Devices 1999, Cisco Systems, Inc. ICND3- 2ObjectivesUpon completion of this chapter, you will be able to perform the following tasks: Identify and connect necessary components to enable connectivity between routers or switches Iden
2、tify and connect necessary components to enable WAN connectivity over serial or ISDN BRI connections 1999, Cisco Systems, Inc. ICND3- 3Objectives (cont.) Set up console connections between routers, switches and a terminal Document the physical topology, including cable types and cable locations on
3、each internetworking device 1999, Cisco Systems, Inc. ICND3- 4core_sw_a ISDN Cloud Leased Line/Frame Relay Cabling the CampusLegendFastEthernet/EthernetISDNDedicatedCore_Server 1999, Cisco Systems, Inc. ICND3- 5PhysicalData Link(MAC layer)LAN Physical Layer ImplementationsPhysical layer implementa
4、tions varySome implementations support multiple physical mediaEthernet100baseTX10BaseT802.310Base510Base2 100baseFX802.3 Specifications for 10mb Ethernet802.3u Specifications for 100mb (Fast) Ethernet100baseT410BaseFDIX Standard 1999, Cisco Systems, Inc. ICND3- 6Positioning Ethernet in the Campus A
5、ccess LayerDistribution LayerCore LayerEthernet 10BaseT PositionFast Ethernet PositionAccess LayerDistribution LayerCore LayerProvides connectivty between the end user device and the access switch.Not typically used at this layer.Gives high-performance PC and workstations 100-Mbps access to the serv
6、er.Provides connectivity between access and distribution layers. Provides connectivity from the distribution to core layer. Provides connectivity from the server block to the core layer.Provides inter-switch connectivity.Not typically used at this layer. 1999, Cisco Systems, Inc. ICND3- 7Comparing
7、Ethernet Media Requirements10Base5 100BaseTX10BaseT 100BaseFXMediaMaximum Segment LengthTopologyConnector50-ohm coax (thick)500 metersBus100 metersStar Star Point-to-PointEIA/TIA Cat3, 4, 5 UTP2 pairEIA/TIA Cat5 UTP2 pair62.5/125 micron multi-mode fiberAUI ISO 8877 (RJ-45)Duplex media-interface conn
8、ector(MIC) STISO 8877 (RJ-45)400 meters100 meters 1999, Cisco Systems, Inc. ICND3- 8Differentiating between ConnectionsAUI connectors are DB15ISO 8877 (RJ-45) connectors and jacks are slightly larger than RJ-11 phone connectors and jacksFiber Connector Port 1999, Cisco Systems, Inc. ICND3- 9UTP De
9、viceThe RJ-45 Connector188 Pair 4 R41234567Wire PairT is TipR is RingPair 2 T2Pair 2 R2Pair 3 T3Pair 1 R1Pair 1 T1Pair 3 R3Pair 4 T4Pin 1999, Cisco Systems, Inc. ICND3- 10UTP Implementation Straight-throughWires on cable ends are in same orderPin Label1 RD+2 RD-3 TD+4 NC5 NC6 TD-7 NC8 NCCable 10BaseT/100BaseT Straight-throughPin Label1 TD+2 TD-3 RD+4 NC5 NC6 RD-7 NC8 NCServer/Router8 1woo bwbwgg brwbr18Straight-through Cable81Hub/Switch8 1woo bwbwgg brwbr1 2 3 6
