连接网络设备

1、第一单元,网络基础 -连接网络设备,第一讲、互联网概念综述 第二讲、TCP/IP协议 第三讲、连接网络设备（CISCO） 第四讲、配置命令（CISCO） 第五讲、管理网络设备,学习内容,通过本章的学习，您应该掌握以下内容： 认识及了解各类线缆，并可以熟练的制作常用连接线缆。 掌握不同设备互连选线技术。 理解DCE、DTE，固化和模块化接口设备。 理解超级终端及创建超级终端会话。,本节目标,连接网络设备（CISCO）,10Base5,100BaseTX,10BaseT,100BaseFX,Media,Maximum Segment Length,Topology,Connector,50-ohm

2、 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 micron multi-mode fiber,AUI,ISO 8877 (RJ-45),Duplex media- interface connector (MIC) ST,ISO 8877 (RJ-45),400 meters,100 meters,常用局域网连接线缆类型,AUI connectors are DB15,ISO 887

3、7 (RJ-45) connectors and jacks are slightly larger than RJ-11 phone connectors and jacks,Fiber Connector Port,常用以太网接口,连接网络设备（CISCO）,RJ-45水晶头,1,8,8,Pair 4 R4,1,2,3,4,5,6,7,Wire Pair T is Tip R is Ring,Pair 2 T2,Pair 2 R2,Pair 3 T3,Pair 1 R1,Pair 1 T1,Pair 3 R3,Pair 4 T4,Pin,1、3发送 2、6接受,UTP的设计,连接网络设备（

4、CISCO）,Wires on cable ends are in same order,Pin Label 1RD+ 2RD- 3TD+ 4NC 5NC 6TD- 7NC 8NC,Cable 10BaseT/100BaseT Straight-through,Pin Label 1TD+ 2TD- 3RD+ 4NC 5NC 6RD- 7NC 8NC,Server/Router,1,8,Straight-through Cable,8,1,Hub/Switch,直通线,连接网络设备（CISCO）,switch to router switch to PC or server hub to PC

5、 or server,直通线用途,连接网络设备（CISCO）,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+ 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,Crossover（交叉线）,连接网络设备（CISCO）,Switc

6、h to SwitchPC to PC Switch to Hub Hub to Hub Router to Router,Crossover（交叉线）用途,连接网络设备（CISCO）,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 designated with an X.,1x,2x,3x,4x,1x,2x,3x,4x,1x,2x,3x,4x,连接

7、网络设备（CISCO）,连接网络设备（CISCO）,CSU/DSU,End user device,DTE,DCE,Service provider,串口连接类型,Data Terminal Equipment End of the users device on the WAN link,Data Communications Equipment End of the WAN providers side of the communication facility DCE 负责提供时钟频率,DCE,DTE,Modem CSU/DSU,DTE,DTE,DCE,DCE,DTE 与 DCE,连接网

8、络设备（CISCO）,2500 Routerrear view,Serial WAN ports can be fixed,固定接口设备,连接网络设备（CISCO）,Console,1603 Routerrear view,Ethernet AUI,Ethernet 10BaseT,ISDN BRI S/T,Serial WAN ports can be modular,3640 Routerrear view,Module,WAN Interface Card,模块化接口设备,连接网络设备（CISCO）,Determine if you need a BRI S/T or U Interfa

9、ce Routers have one or both types of ports,Note port Label,连接网络设备（CISCO）,!警告! Do not 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,连接网

10、络设备（CISCO）,Device with console,PCs require an RJ-45 to DB-9 or RJ-45 to DB-25 adapter COM port settings are 9600 bps, 8 data bits, no parity, 1 stop bit, no flow control,Console连接的设置,连接网络设备（CISCO）,Console Port,CommunicationsPort (COM),Cisco device,Windows 95 PC withHyperTerminal terminal emulation software,超级终端,连接网络设备（CISCO）,Step 1: 验证线缆（全反线，DB9） Step 2: 开机 Step 3: 打开 HyperTerminal文件夹 Step 4: 打开 HyperTerminal Step