CCNA課件-第五章-管理Cisco互聯(lián)網(wǎng)絡(luò)

第五章管理Cisco互聯(lián)網(wǎng)絡(luò)第五章管理Cisco互聯(lián)網(wǎng)絡(luò)CiscoRouter內(nèi)部組件CiscoRouter內(nèi)部組件ROM功能ROM功能路由器的啟動順序路由器執(zhí)行POST開機自檢。Bootstrap查找并加載CiscoIOS軟件。IOS在NVRAM中查找有效的配置文件。如果有，則復(fù)制到RAM中。無，則在以太網(wǎng)口進(jìn)行廣播查找TFTP尋求配置，如果找不到，進(jìn)入setup路由器的啟動順序路由器執(zhí)行POST開機自檢。Cisco配置寄存器配置寄存器2102位值1514131211109876543210二進(jìn)制0010000100000010Cisco配置寄存器配置寄存器2102位值15141312查看當(dāng)前配置寄存器的值wg_ro_a#showversionCiscoInternetworkOperatingSystemSoftwareIOS(tm)2500Software(C2500-JS-L),Version12.0(3),RELEASESOFTWARE(fc1)Copyright(c)1986-1999byciscoSystems,Inc.CompiledMon08-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_120-3.bin"--More--Configurationregisteris0x2102

使用showversion命令查看查看當(dāng)前配置寄存器的值wg_ro_a#showversio修改寄存器命令修改寄存器命令路由器口令破解路由器口令破解路由器口令破解路由器口令破解路由器口令破解路由器口令破解BootsystemBootsystem驗證閃存

Router#showversionCiscoInternetworkOperatingSystemSoftwareIOS(tm)C2600Software(C2600-JS-M),Version12.0(7a),RELEASESOFTWARE(fc1)Copyright(c)1986-2002byciscoSystems,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(revision0x300)with53248K/12288Kbytesofmemory.ProcessorboardIDJAD06090BMD(2719249260)M860processor:partnumber0,mask49Bridgingsoftware.X.25software,Version3.0.0.SuperLATsoftware(copyright1990byMeridianTechnologyCorp).TN3270Emulationsoftware.BasicRateISDNsoftware,Version1.1.1Ethernet/IEEE802.3interface(s)2Serial(sync/async)networkinterface(s)1ISDNBasicRateinterface(s)32Kbytesofnon-volatileconfigurationmemory.16384KbytesofprocessorboardSystemflash(Read/Write)Configurationregisteris0x2102驗證閃存

Router#showversion驗證閃存

wg_ro_a#showflash

Systemflashdirectory:FileLengthName/status110084696c2500-js-l_120-3.bin[10084760bytesused,6692456available,16777216total]16384KbytesofprocessorboardSystemflash(ReadONLY)驗證閃存

wg_ro_a#showflashCiscoIOS文件系統(tǒng)與設(shè)備CiscoIOS文件系統(tǒng)與設(shè)備管理CiscoIOS鏡像管理CiscoIOS鏡像wg_ro_a#showflashSystemflashdirectory:FileLengthName/status110084696c2500-js-l_120-3.bin[10084760bytesused,6692456available,16777216total]16384KbytesofprocessorboardSystemflash(ReadONLY)Verifythatflashmemoryhasroomforthe

CiscoIOSimage.檢查閃存中的鏡像文件wg_ro_a#showflashVerifythat升級之前需要先備份原來的鏡像.備份和升級軟件映像升級之前需要先備份原來的鏡像.備份和升級軟件映像升級鏡像文件升級鏡像文件設(shè)備配置文件設(shè)備配置文件CiscoIOScopy命令NVRAMTerminalTFTPserverErasestartCiscoIOScopy命令NVRAMCiscoIOScopy命令舉例

running-configTFTPServersaved.cfgResulting

running-configcopytftprun(merged)interfaces0ipaddressinterfacee0ipaddressinterfacee1noipaddressinterfacee0ipaddressinterfacee1ipaddressinterfaces0ipaddressinterfacee0ipaddressinterfacee1ipaddressCiscoIOScopy命令舉例

running-concopyruntftp和copytftprun命令

wg_ro_a#copyrunning-configtftpAddressornameofremotehost[]?Destinationfilename[running-config]?wgroa.cfg.!!1684bytescopiedin13.300secs(129bytes/sec)

wg_ro_a#copytftprunning-config

Addressornameofremotehost[]?Sourcefilename[]?wgroa.cfgDestinationfilename[running-config]?Accessingt/wgroa.cfg...Loadingwgroa.cfgfrom(viaEthernet0):![OK-1684/3072bytes]1684bytescopiedin17.692secs(99bytes/sec)copyruntftp和copytftprun命IFS命令dircopymoreshowfiledeleteerase/formatcd/pwdmkdir/rmdirIFS命令dirdelete使用Cisco發(fā)現(xiàn)協(xié)議

Cisco發(fā)現(xiàn)協(xié)議(CiscoDiscoveryProtocol)是由Cisco設(shè)計的專用協(xié)議。通過使用CDP，可以收集相鄰設(shè)備的硬件和協(xié)議信息，對于故障診斷和網(wǎng)絡(luò)文件歸檔很有用。使用Cisco發(fā)現(xiàn)協(xié)議Cisco發(fā)現(xiàn)協(xié)議(Cis使用CDP發(fā)現(xiàn)鄰居CDP運行在CiscoIOS?

10.3及以上版本的路由器，交換機，集線器上.總結(jié)信息包括:設(shè)備標(biāo)識符地址列表端口標(biāo)識符CapabilitieslistPlatform使用CDP發(fā)現(xiàn)鄰居CDP運行在CiscoIOS?

1使用CDP使用CDP使用showcdpneighbors命令使用showcdpneighbors命令使用showcdpentry命令使用showcdpentry命令其他CDP命令其他CDP