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1、©2002,CiscoSystems,Inc.Allrightsreserved.©2002,CiscoSystems,Inc.Allrightsreserved.2路由器启动及管理配置目标通过本章的学习，你将能做到以下内容：描述路由器的启动顺序并解释如何判断路由器是否正确启动识别Cisco路由器及交换机的内部组件路由器加电/启动顺序加电自检(POST).运行并加载bootstrap代码.发现CiscoIOS软件.加载CiscoIOS软件.发现配置信息.加载配置信息.运行已配置的CiscoIOS软件.路由器内部组件ROM功能包含了微代码用于基本操作发现Cisc
2、oIOS软件从Flash存储器中加载CiscoIOS软件Falsh中存储的文件被放到RAM中解压缩加载配置信息从NVRAM里加载并执行配置文件.如果NVRAM里没有配置文件,进入到配置模式.查看当前配置里的配置寄存器的值wg_ro_a#showversionCiscoInternetworkOperatingSystemSoftwareIOS(tm)2500Software(C2500-JS-L),Version12.0(3),RELEASESOFTWARE(fc1)Copyright(c)1986-1999byciscoSystems,Inc.Compile
3、dMon08-Feb-9918:18byphanguyeImagetext-base:0x03050C84,data-base:0x00001000ROM:SystemBootstrap,Version11.0(10c),SOFTWAREBOOTFLASH:3000BootstrapSoftware(IGS-BOOT-R),Version11.0(10c),RELEASESOFTWARE(fc1)wg_ro_auptimeis20minutesSystemrestartedbyreloadSystemimagefileis"flash:c2500-js-l_1
4、20-3.bin"--More--Configurationregisteris0x2102通过showversion命令查看配置寄存器的值配置寄存器位3,2,1,和0设置启动选项.通过showversion命令来检查配置寄存器的值.配置寄存器的值showversion命令Router#showversionCiscoInternetworkOperatingSystemSoftwareIOS(tm)C2600Software(C2600-JS-M),Version12.0(7a),RELEASESOFTWARE(fc1)Copyright(c)1986-20
5、02byciscoSystems,Inc.CompiledTue05-Feb-0201:48bypwadeImagetext-base:0x80008088,data-base:0x80B0404CROM:SystemBootstrap,Version11.3(2)XA4,RELEASESOFTWARE(fc1)Routeruptimeis1minuteSystemrestartedbyreloadSystemimagefileis"flash:c2600-js-mz.120-7a.bin"cisco2610(MPC860)processor(revision
6、0x300)with53248K/12288Kbytesofmemory.ProcessorboardIDJAD06090BMD(2719249260)M860processor:partnumber0,mask49Bridgingsoftware.X.25software,Version3.0.0.SuperLATsoftware(copyright1990byMeridianTechnologyCorp).TN3270Emulationsoftware.BasicRateISDNsoftware,Version1.1.1Ethernet/IEEE802.3
7、interface(s)2Serial(sync/async)networkinterface(s)1ISDNBasicRateinterface(s)32Kbytesofnon-volatileconfigurationmemory.16384KbytesofprocessorboardSystemflash(Read/Write)Configurationregisteris0x2102showflash命令wg_ro_a#showflashSystemflashdirectory:FileLengthName/status110084696c2500-j
8、s-l_120-3.bin[10084
