路由器基本配置导航-- 使用console线配置路由器：1. 将console线连接主机到路由器2. 新建终端通讯a) 所有程序b) 附件c) 通讯d) 超级终端3. 填入新建连接名称4. “连接时使用”中选择com口5. 点击还原成默认值6. 按确定后敲“回车”键可开始进行配置 路由器模式：用户模式：对路由器进行有限的检查，远程访问Router> 特权模式：可对路由器进行详细的检查和测试，文件处理，远程访问。Router# 通用配置模式--简单的配置命令Router（config）#用户模式进入特权模式Router>enableRouter#特权模式进入通用配置模式Router# configure terminal退出到上一模式Router#exit 配置它的一般参数，包括：修改主机名：hostname 特权口令：enable passWord 其中Console的secret、password的设置：Router(config)# enable secret <######>Router(config)# enable password <#######> Virtual Terminor的password的设置：Router(config)#line console 0Router(config)# Line vty 0 4Router(config-line)#Password <######> Host name的设置：Router(config)#hostname 查看现在的配置：Router#show running-config 查看端口状态：Router#shoipinterface briefInterface IP-Address OK? Method Status PRotocol
Ethernet0 192.168.100.2 YES NVRAM up up
Loopback0 172.16.1.1 YES manual up up
Serial0 172.16.0.5 YES manual up up
Serial1 unassigned YES NVRAM administratively down down 查看串口是DCE还是DTERouter#show controllers serial <0-1>prasit#show controllers serial 0HD unit 0, idb = 0x1D3A2C, driver structure at 0x1DAFE8buffer size 1524 HD unit 0, V.35 DCE cable, clockrate 64000spicey#show controllers serial 1HD unit 1, idb = 0x153E94, driver structure at 0x15A1F8buffer size 1524 HD unit 1, V.35 DTE cable 配置以太网口IP地址:Router>enableRouter# configure terminalRouter(config)#interface ethernet 0Router(config-if)#no shutdownRouter(config-if)#ip address 192.168.2.50-55 255.255.255.0 配置串口地址Router>enableRouter#configure terminalRouter(config)#interface serial 0Router(config-if)#no shutdownRouter(config-if)#ip address 192.168.0.1 255.255.255.0Router(config-if)#encapsulation pppRouter(config-if)#clock rate 9600(如果是DCE端需要配置时钟速率) 检查路由器的状态：show version系统硬件配置，软件版本，引导映像isco2621xm#show version
Cisco InternetworkOperating System Software
IOS (tm) C2600 Software (C2600-I-M), Version 12.3(5d), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Wed 09-Jun-04 00:05 by kellythw
Image text-base: 0x80008098, data-base: 0x80CA63B4
ROM: System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)
cisco2621xm uptime is 4 hours, 53 minutes
System returned to ROM by power-on
System restarted at 15:40:05 UTC Tue Dec 7 2004
System image file is "Flash:c2600-i-mz.123-5d.bin"
cisco 2621XM (MPC860P) processor (revision 0x301) with126976K/4096K bytes of me
mory.
Processor board ID FOC08382DBW (3885486175)
M860 processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
32K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102 show process显示激活的进程信息主要查看CPU的使用状态CPU使用率一旦超过70%，就说明路由器的CPU负荷较大如果CPU使用率超过90%，网内一定存在病毒 路由器时间设置Router#show clock查看现在路由器时间Router#clock set <日期> 一月 Jan. January二月 Feb. February三月 Mar. March四月 Apr. April五月 May. May六月 June. June七月 July. July八月 Aug. August九月 Sept. September十月 Oct. October十一月 Nov. November十二月 Dec. December 路由器配置存储：Router#copy running-config startup-configRouter#write