思科设备路由器串行端口配置.docx

本次讲解DTE/DCT串行端口配置：同步串行端口的同步时钟信号是由DCE(数据通讯设备,如modem)提供的。默认情况下，路由器串行端口充当DTE。如果查看到该端口是DTE(数据终端设备,如计算机)类型，不必配置同步时钟参数；如果查看到端口是DCE类型，就必须用clock rate命令指定时钟频率来配置成DCE端。在串行端口连接中，作为DCE的一端必须要为连接的另一DTE提供时钟信号。本例配置模型图命令行：以下为RouteA配置：RouterenableRouter#conf tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#int s1/0 /进入串口s1/0配置模式Router(config-if)#ip addreRouter(config-if)#ip address 192.168.1.1 255.255.255.0 /配置ip地址和子网掩码Router(config-if)#clock rate 64000 /设置时钟频率为64KHz，DCE端必须配置，DTE端不需要配置Router(config-if)#baRouter(config-if)#bandwidth 64 /设置带宽为64KbpsRouter(config-if)#no shutdown /激活端口%LINK-5-CHANGED: Interface Serial1/0, changed state to downRouter(config-if)#exitRouter(config)#exit%SYS-5-CONFIG_I: Configured from console by consoleRouter#show int s1/0 /查看s1/0配置情况Serial1/0 is down, line protocol is down (disabled) /目前由于未配置routeB，故端口未激活，线路不通 Hardware is HD64570 Internet address is 192.168.1.1/24 MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255Router#wrBuilding configuration.OKRouter#Router#show int s1/0Serial1/0 is up, line protocol is up (connected) /已配置routeB，故端口已激活，线路已通 Hardware is HD64570 Internet address is 192.168.1.1/24 MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Router#以下为routeB配置：RouterenableRouter#conf tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#int s1/0 Router(config-if)#ip addRouter(config-if)#ip address 192.168.1.2 255.255.255.0Router(config-if)#baRouter(config-if)#bandwidth 64 /设置带宽为64KHz，在DTE端不用设置时钟频率Router(config-if)#no shutRouter(config-if)#no shutdown %LINK-5-CHANGED: Interface Serial1/0, changed state to upRouter(config-if)#exitRouter(config)#exitRouter#show int s1/0Serial1/0 is up, line protocol is up (connected) /端口已激活 Hardware is HD64570 Internet address is 192.168.1.2/24 MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,%SYS-5-CONFIG_I: Configured from console by consoleRouter#show ip route /查看路由信息Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static routeGateway of last resort is not setRouter#%LINEPROT