《实用网络技术》PPT课件.ppt

1、Objectives,Upon 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 Identify and connect necessary components to enable WAN connectivity over serial or ISDN BRI connections,Objective

2、s (cont.),Set up console connections between routers, switches and a terminal Document the physical topology, including cable types and cable locations on each internetworking device,core_sw_a,ISDN Cloud,Leased Line/ Frame Relay,Cabling the Campus,Legend FastEthernet/ Ethernet ISDN Dedicated,Core_Se

3、rver,Physical,Data Link (MAC layer),LAN Physical Layer Implementations,Physical layer implementations vary Some implementations support multiple physical media,Ethernet,100baseTX,10BaseT,802.3,10Base5,10Base2,100baseFX,802.3 Specifications for 10MB Ethernet,802.3u Specifications for 100MB (Fast) Eth

4、ernet,100baseT4,10BaseF,DIX Standard,Positioning Ethernet in the Campus,Access Layer,Distribution Layer,Core Layer,Ethernet 10BaseT Position,Fast Ethernet Position,Access Layer,Distribution Layer,Core Layer,Provides connectivty between the end user device and the access switch.,Not typically used at

5、 this layer.,Gives high-performance PC and workstations 100-Mbps access to the server.,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 connect

6、ivity.,Not typically used at this layer.,Comparing Ethernet Media Requirements,10Base5,100BaseTX,10BaseT,100BaseFX,Media,Maximum Segment Length,Topology,Connector,50-ohm coax (thick),500 meters,Bus,100 meters,Star,Star,Point-to-Point,EIA/TIA Cat 3, 4, 5 UTP 2 pair,EIA/TIA Cat 5 UTP 2 pair,62.5/125 m

7、icron multi-mode fiber,AUI,ISO 8877 (RJ-45),Duplex media- interface connector (MIC) ST,ISO 8877 (RJ-45),400 meters,100 meters,Differentiating between Connections,AUI connectors are DB15,ISO 8877 (RJ-45) connectors and jacks are slightly larger than RJ-11 phone connectors and jacks,Fiber Connector Po

8、rt,UTP Device,The RJ-45 Connector,1,8,8,Pair 4 R4,1,2,3,4,5,6,7,Wire Pair T is Tip R is Ring,Pair 3 T2,Pair 3 R2,Pair 2 T3,Pair 1 R1,Pair 1 T1,Pair 2 R3,Pair 4 T4,Pin,UTP Implementation Straight-through,Wires on cable ends are in same order,Pin Label 1RD+ 2RD- 3TD+ 4NC 5NC 6TD- 7NC 8NC,Cable 10BaseT

9、/100BaseTx Straight-through,Pin Label 1TD+ 2TD- 3RD+ 4NC 5NC 6RD- 7NC 8NC,Server/Router,1,8,Straight-through Cable,8,1,Hub/Switch,UTP Implementation Crossover,Some wires on cable ends are crossed,Cable 10BaseT/100BaseT Crossover,Pin Label 1RD+ 2RD- 3TD+ 4NC 5NC 6TD- 7NC 8NC,Pin Label 1RD+ 2RD- 3TD+

10、4NC 5NC 6TD- 7NC 8NC,Crossover Cable,1,8,1,8,8,1,wg,g,w b,wo,b,o,br,wbr,Hub/Switch,Hub/Switch,UTP Implementation of Straight-through versus Crossover,Use a crossover cable when BOTH ports are designated with an x or neither port is designated with an x.,Use straight-through when only one port is des

11、ignated with an X.,1x,2x,3x,4x,1x,2x,3x,4x,1x,2x,3x,4x,Cabling the Campus,Determine the physical media used- 10MB or 100MB Indicates what type of CAT cable is required Locating interfaces on the chassis- determine if one or both ports have an X Indicates if need crossover or straight-through cable,1

12、00 Mbps Cat 5 Crossover,10 Mbps Cat 3, 4, 5 Crossover,100 Mbps Cat 5 Straight-through,10 Mbps Cat 3, 4, 5 Straight-through,10 Mbps Cat 3, 4, 5 Straight-through,Cabling the WAN,Core_Server,core_sw_a,ISDN Cloud,Legend FastEthernet/ Ethernet ISDN Dedicated,core_sw_b,core_sw_b,ISL,Leased Line/ Frame Rel

13、ay,WAN Physical Layer Implementations,Physical layer implementations vary Cable specifications define speed of link,PPP,Frame Relay,EIA/TIA-232 EIA/TIA-449 X.21 V.24 V.35 HSSI,ISDN BRI (with PPP),RJ-45 NOTE: Pinouts are different than RJ-45 used in campus,HDLC,Differentiating Between WAN Serial Conn

14、ectors,Router connections,Network connections at the CSU/DSU,EIA/TIA-232,EIA/TIA-449,EIA-530,V.35,X.21,CSU/DSU,End user device,DTE,DCE,Service provider,Data Terminal Equipment End of the users device on the WAN link,Data Communications Equipment End of the WAN providers side of the communication fac

15、ility DCE is responsible for clocking,DCE,DTE,Modem CSU/DSU,DTE,DTE,DCE,DCE,Serial Implementation ofDTE versus DCE,DTE/DCEThe point where responsibility passes,Fixed Interfaces,2500 Routerrear view,Serial WAN ports can be fixed,Console,1603 Routerrear view,Ethernet AUI,Ethernet 10BaseT,ISDN BRI S/T,

16、Serial WAN ports can be modular,3640 Routerrear view,Modular Interfaces,Module,WAN Interface Card,Cabling Routers for ISDN Connections,Determine if you need a BRI S/T or U Interface Routers have one or both types of ports,Note port Label,Cabling Routers for ISDN Connections (cont.),!WARNING! Do not

17、connect a cable into an ISDN port unless it is from an ISDN switch or ISDN wall jack. If you connect a cable from any other device into the BRI port, you will ruin the non-ISDN device.,Cisco Router,ISDN BRI port,PCs require an RJ-45 to DB-9 or RJ-45 to DB-25 adapter COM port settings are 9600 bps, 8

18、 data bits, no parity, 1 stop bit, no flow control This provides out-of-band console access AUX switch port may be used for modem-connected console,Setting up a Console Connection,Device with console,Visual Objective,core_ server,wg_sw_a,wg_sw_l,wg_pc_a,wg_pc_l,.,LL/FR,wg_ro_a,wg_ro_l,e0/1(1x),e0/2 (2x),fa0/26 (Ax),e0/2 (2x),e0/1(1x),e0,e0,s0,s0,bri0,bri0,fa0/26 (Ax),fa0/1(1x),fa0/12(12x),fa0/23 (23x),fa0/24(24x),fa0/0,s1/0 - s2/3,s3/0,console,console,A/B,A/B,console,console,core_sw_a,core_ro,.,ISDN,Summary,After completing this chapter, you should be able to perform the following tasks: I