第四章操作与配置CiscoIOS设备CICNDSA

本章目标通过本章的学习，您应该掌握以下内容:开启交换机和路由器并观察其启动过程注意交换机的出厂初始配置情况，完成路由器的初始参数配置在网络设备上进入并辨识不同的命令模式本章目标(续)在不同的用户界面下应用各种帮助和命令行编辑功能查看并确认并于各网络设备的基本信息

CiscoIOS软件提供多种网络服务进而支持各种网络应用.Cisco互连网操作系统(IOS)软件网络设备的配置基于以下各方面来配置设备:

所需功能的网络策略

与协议关联的地址和相关参数

管理方面的需要交换机将出厂缺省设置作为初始配置如果路由器中没有配置文件，会提示进入初始化设置过程

硬件自检定位并加载CiscoIOS映象文件定位并运行配置文件Cisco设备的简单启动过程可以通过多种途径来配置配置直接在设备的内存中生效控制端口Aux端口端口PCorUnix服务器Web或网络管理服务器

虚拟终端多种途径的配置TelnetTFTP提供命令行界面在不同的网络设备上运行时有差别在命令模式下可以键入或粘贴命令

键入命令后回车，设备即解析和执行所键入的命令两个主要命令模式是用户模式和特权模式不同的命令模式有不同的提示符CiscoIOSCiscoIOS用户界面的基本特性用户模式对交换机和路由器的有限操作命令提示符为

主机名>主要有两个命令模式提供命令键入.模式一:CiscoIOS的主要命令模式特权(或enabled)模式对交换机和路由器更深入的操作有配置和监视权力是进入其它配置模式的前提命令提示符为

主机名#模式二(也是最常用的模式):CiscoIOS的主要命令模式(续)系统启动例程会初始化交换机初始启动利用缺省配置参数1.启动前确认正确连接线缆和控制线2.接入电源3.观察启动顺序面板上的指示灯LEDsCiscoIOS输出到控制台上的内容交换机的初始启动检查交换机指指示灯(LEDs)交换机自检期期间的端口指指示灯1.启动时时，所有端口口指示灯变绿绿.2.每个端口自检检完毕，对应应的指示灯熄熄灭.3.如果端口自检检失败,对应指示灯呈呈黄色.4.如果有任何自自检失败情况况，系统指示示灯呈现黄色色.5.如果没有自检检失败,自检过程完成成.6.随着自检过程程的完成,指示灯闪亮后后熄灭.交换机初次启启动时的显示示信息控制台连接Catalyst1900ManagementConsoleCopyright(c)CiscoSystems,Inc.1993-1998Allrightsreserved.EnterpriseEditionSoftwareEthernetAddress:00-50-BD-73-E2-C0PCANumber:73-3121-01PCASerialNumber:FAA0252A0QXModelNumber:WS-C1924-ENSystemSerialNumber:FAA0304S0U3PowerSupplyS/N:PHI025101F3-------------------------------------------------1user(s)nowactiveonManagementConsole.UserInterfaceMenu[M]Menus[K]CommandLine[I]IPConfigurationEnterSelection:控制台登入交换机并并键入特权模模式密码>>enableEnterpassword:##disable>quit用户模式提示示特权模式提示示上下文关联帮帮助错误信息提示示指出所输入交交换机命令的的错误所在，，以便于修改改或纠正.可以重新调出出一个较长或或较复杂的命命令或其它内内容，用来再再次运行、查查看或修改.之前命令保存存区交换机命令行行帮助机制提供命令清单单和与特定命命令相关联的的参数.Switch#showinterfacesSwitch#showversion显示交换机初初始启动的状状态Switch#showrunning-config显示交换机的的各种运行状状态wg_sw_c#showversionCiscoCatalyst1900/2820EnterpriseEditionSoftwareVersionV8.01.01writtenfrom171.068.229.225Copyright(c)CiscoSystems,Inc.1993-1998wg_sw_cuptimeis15day(s)21hour(s)53minute(s)11second(s)ciscoCatalyst1900(486sxl)processorwith2048K/1024KbytesofmemoryHardwareboardrevisionis5UpgradeStatus:Noupgradecurrentlyinprogress.ConfigFileStatus:Noconfigurationupload/downloadisinprogress27FixedEthernet/IEEE802.3interface(s)BaseEthernetAddress:00-50-BD-73-E2-C0交换机之showversion命令wg_sw_c#showrunBuildingconfiguration...Currentconfiguration:!hostname"wg_sw_c"!ipaddress3ipdefault-gateway!interfaceEthernet0/1<textomitted>interfaceEthernet0/24!InterfaceEthernet0/25!interfaceFastEthernet0/26!interfaceFastEthernet0/27交换换机机之之showrunning-configuration命令令wg_sw_c#showrunBuildingconfiguration...Currentconfiguration:!hostname"wg_sw_c"!ipaddress3ipdefault-gateway!interfaceEthernet0/1<textomitted>interfaceEthernet0/12!InterfaceEthernet0/25!interfaceFastEthernet0/26!interfaceFastEthernet0/27Catalyst1924Catalyst1912wg_sw_c#showinterfacesethernet0/1Ethernet0/1isEnabledHardwareisBuilt-in10Base-TAddressis0050.BD73.E2C1MTU1500bytes,BW10000Kbits802.1dSTPState:ForwardingForwardTransitions:1Portmonitoring:DisabledUnknownunicastflooding:EnabledUnregisteredmulticastflooding:EnabledDescription:Duplexsetting:HalfduplexBackpressure:Disabled--More--交换机机之showinterfaces命令wg_sw_a#showipIPAddress:1SubnetMask:DefaultGateway:ManagementVLAN:1Domainname:Nameserver1:Nameserver2:HTTPserver:EnabledHTTPport:80RIP:Enabledwg_sw_a#查看交交换机机的IP地址配置模模式:全局配配置模模式wg_sw_a#conftermwg_sw_a(config)#端口配配置模模式wg_sw_a(config)#interfacee0/1wg_sw_a(config-if)#配置交交换机机配置交交换机机的各各种标标识为交换换机设设置本本地标标识交换机名(config)#hostnamewg_sw_cwg_sw_c(config)#wg_sw_a(config)#ipaddress{ipaddress}{mask}wg_sw_a(config)#ipaddress1配置交交换机机IP地址系统启启动例例程会会初始始化路路由器器如果需需要，，路由由器可可以有有选择择性地地回退退启动动CheckhardwareFindandloadCiscoIOSsoftwareimageFindandapplyrouterconfigurationinformationLoadBootstrap1.启启动动前确确认正正确连连接线线缆和和控制制线2.按下电电源开开关3.观察启启动顺顺序CiscoIOS输出到到控制制台上上的内内容Cisco路由器器的初初始启启动没有配配置文文件与与有配配置文文件的的路由由器启启动对对比---SystemConfigurationDialog---Continuewithconfigurationdialog?[yes/no]:yesAtanypointyoumayenteraquestionmark'?'forhelp.Usectrl-ctoabortconfigurationdialogatanyprompt.Defaultsettingsareinsquarebrackets'[]'.Setup模式wg_ro_ccon0isnowavailablePressRETURNtogetstarted.用户模式提示wg_ro_c>路由器器启动动时在在控制制台上上的输输出内内容控制台台Setup:初始配配置对对话框框Router#setup---SystemConfigurationDialog---Continuewithconfigurationdialog?[yes/no]:yAtanypointyoumayenteraquestionmark'?'forhelp.Usectrl-ctoabortconfigurationdialogatanyprompt.Defaultsettingsareinsquarebrackets'[]'.Basicmanagementsetupconfiguresonlyenoughconnectivityformanagementofthesystem,extendedsetupwillaskyoutoconfigureeachinterfaceonthesystemWouldyouliketoenterbasicmanagementsetup?[yes/no]:n预先浏浏览端端口配配置情情况First,wouldyouliketoseethecurrentinterfacesummary?[yes]:InterfaceIP-AddressOK?MethodStatusProtocolBRI0unassignedYESunsetadministrativelydowndownBRI0:1unassignedYESunsetadministrativelydowndownBRI0:2unassignedYESunsetadministrativelydowndownEthernet0unassignedYESunsetadministrativelydowndownSerial0unassignedYESunsetadministrativelydowndown自检过过程中中所找找到的的端口口设置全全局参参数初始化化全局局参数数Configuringglobalparameters:Enterhostname[Router]:wg_ro_cTheenablesecretisapasswordusedtoprotectaccesstoprivilegedEXECandconfigurationmodes.Thispassword,afterentered,becomesencryptedintheconfiguration.Enterenablesecret:ciscoTheenablepasswordisusedwhenyoudonotspecifyanenablesecretpassword,withsomeoldersoftwareversions,andsomebootimages.Enterenablepassword:sanfranThevirtualterminalpasswordisusedtoprotectaccesstotherouteroveranetworkinterface.Entervirtualterminalpassword:sanjoseConfigureSNMPNetworkManagement?[no]:设置全局局参数(续)初始化协协议配置置ConfigureLAT?[yes]:nConfigureAppleTalk?[no]:ConfigureDECnet?[no]:ConfigureIP?[yes]:ConfigureIGRProuting?[yes]:nConfigureRIProuting?[no]:ConfigureCLNS?[no]:ConfigureIPX?[no]:ConfigureVines?[no]:ConfigureXNS?[no]:ConfigureApollo?[no]:设置端口口参数BRIinterfaceneedsisdnswitch-typetobeconfiguredValidswitchtypesare:[0]none..........Onlyifyoudon'twanttoconfigureBRI.[1]basic-1tr6....1TR6switchtypeforGermany[2]basic-5ess....AT&T5ESSswitchtypefortheUS/Canada[3]basic-dms100..NorthernDMS-100switchtypeforUS/Canada[4]basic-net3....NET3switchtypeforUKandEurope[5]basic-ni......NationalISDNswitchtype[6]basic-ts013...TS013switchtypeforAustralia[7]ntt...........NTTswitchtypeforJapan[8]vn3...........VN3andVN4switchtypesforFranceChooseISDNBRISwitchType[2]:Configuringinterfaceparameters:DoyouwanttoconfigureBRI0(BRId-channel)interface?[no]:DoyouwanttoconfigureEthernet0interface?[no]:yConfigureIPonthisinterface?[no]:yIPaddressforthisinterface:3Subnetmaskforthisinterface[]:ClassAnetworkis,24subnetbits;maskis/24DoyouwanttoconfigureSerial0interface?[no]:设置脚本本的确认认与应用用Thefollowingconfigurationcommandscriptwascreated:hostnameRouterenablesecret5$1$/CCk$4r7zDwDNeqkxFO.kJxC3G0enablepasswordsanfranlinevty04passwordsanjosenosnmp-server!noappletalkroutingnodecnetroutingiproutingnoclnsroutingnoipxroutingnovinesroutingnoxnsroutingnoapolloroutingisdnswitch-typebasic-5essinterfaceBRI0shutdownnoipaddress!interfaceEthernet0noshutdownipaddress1nomopenabled!interfaceSerial0shutdownnoipaddress<textomitted>end[0]GototheIOScommandpromptwithoutsavingthisconfig.[1]Returnbacktothesetupwithoutsavingthisconfig.[2]Savethisconfigurationtonvramandexit.Enteryourselection[2]:Consolewg_ro_c>wg_ro_c>enablewg_ro_c#wg_ro_c#disablewg_ro_c>wg_ro_c>logoutwg_ro_ccon0isnowavailablePressRETURNtogetstarted.用户模式式提示特权模式式提示登入路由由器只要所输输命令串串在全部部命令中中是唯一一的，可可以将一一个命令令尽可能能地简写写，路由器在在用户模模式下的的命令清清单wg_ro_c>?Execcommands:access-enableCreateatemporaryAccess-ListentryatmsigExecuteAtmSignallingCommandscdChangecurrentdeviceclearResetfunctionsconnectOpenaterminalconnectiondirListfilesongivendevicedisableTurnoffprivilegedcommandsdisconnectDisconnectanexistingnetworkconnectionenableTurnonprivilegedcommandsexitExitfromtheEXEChelpDescriptionoftheinteractivehelpsystemlatOpenalatconnectionlockLocktheterminalloginLoginasaparticularuserlogoutExitfromtheEXEC

--More--wg_ro_c#?Execcommands:access-enableCreateatemporaryAccess-Listentryaccess-profileApplyuser-profiletointerfaceaccess-templateCreateatemporaryAccess-ListentrybfeFormanualemergencymodessettingcdChangecurrentdirectoryclearResetfunctionsclockManagethesystemclockconfigureEnterconfigurationmodeconnectOpenaterminalconnectioncopyCopyfromonefiletoanotherdebugDebuggingfunctions(seealso'undebug')deleteDeleteafiledirListfilesonafilesystemdisableTurnoffprivilegedcommandsdisconnectDisconnectanexistingnetworkconnectionenableTurnonprivilegedcommandseraseEraseafilesystemexitExitfromtheEXEChelpDescriptionoftheinteractivehelpsystem--More--路由器在特特权模式下下的命令清清单只要输入部部分命令串串(唯一表表示某个命命令)，紧紧接着按tab键就可以完完整地输入入一个命令令路由器命令令行帮助机机制上下文关联联帮助错误信息提提示指出所输入入交换机命命令的错误误所在，以以便于修改改或纠正.可以重新调调出一个较较长或较复复杂的命令令或其它内内容，用来来再次运行行、查看或或修改.之前命令保保存区提供命令清清单和与特特定命令相相关联的参参数.路由器的上上下文相关关联帮助Router#clokTranslating"CLOK"%Unknowncommandorcomputername,orunabletofindcomputeraddressRouter#cl?clearclockRouter#clock%Incompletecommand.Router#clock?setSetthetimeanddateRouter#clockset%Incompletecommand.Router#<Ctrl-P>clockset?hh:mm:ssCurrentTime符号解析命令提示调出最近用用过的内容容路由器的上上下文相关关联帮助(续)Router#clokTranslating"CLOK"%Unknowncommandorcomputername,orunabletofindcomputeraddressRouter#clearclockRouter#%Incompletecommand.Router#setSetthetimeanddateRouter#%Incompletecommand.Router#hh:mm:ssCurrentTimeRouter#clockset19:56:00%Incompletecommand.Router#clockset19:56:00?<1-31>DayofthemonthMONTHMonthoftheyearRouter#clockset19:56:00048^%Invalidinputdetectedatthe'^'markerRouter#clockset19:56:0004August%Incompletecommand.Router#clockset19:56:0004August?<1993-2035>Year命令提示语法检查命令提示Router>Shapethefutureofinternetworkingbycreatingunpreced使用增强的的编辑命令令“Shapethefutureofinternetworkingbycreatingunprecedentedvalueforcustomers,employees,andpartners.””上述文字段段在输入时时会超出一一行Router>$futureofinternetworkingbycreatingunprecedentedop使用增强的的编辑命令令(一行中长长字串会自自动滚卷).Router>Shapethevalueofinternetworkingbycreatingunpreced使用增强的的编辑命令令(一行中长长字串会自自动滚卷).<Ctrl-A>光标移动到到命令行的的开始位置置.Router>$valueforcustomers,employees,andpartners.使用增强的的编辑命令令(一行中长长字串会自自动滚卷).<Ctrl-A>光标移动到到命令行的的开始位置置.<Ctrl-E>光标移动到到命令行的的结束位置置.使用增强的的编辑命令令(一行中长长字串会自自动滚卷).<Ctrl-A>光标移动到到命令行的的开始位置置.<Ctrl-E>光标移动到到命令行的的结束位置置.<Esc-B>回移一个单单词Router>$valueforcustomers,employees,andpartners.使用增强的的编辑命令令(一行中长长字串会自自动滚卷).<Ctrl-A>光标移动到到命令行的的开始位置置.<Ctrl-E>光标移动到到命令行的的结束位置置.<Esc-B>回移一一个单单词.<Ctrl-F>下移一一个字字符.Router>$valueforcustomers,employees,andpartners.使用增增强的的编辑辑命令令(一行行中长长字串串会自自动滚滚卷).<Ctrl-A>光标移移动到到命令令行的的开始始位置置.<Ctrl-E>光标移移动到到命令令行的的结束束位置置.<Esc-B>回移一一个单单词<Ctrl-F>下移一一个字字符.<Ctrl-B>回移一一个字字符.Router>$valueforcustomers,employees,andpartners.使用增增强的的编辑辑命令令(一行行中长长字串串会自自动滚滚卷).<Ctrl-A>光标移移动到到命令令行的的开始始位置置.<Ctrl-E>光标移移动到到命令令行的的结束束位置置.<Esc-B>回移一一个单单词<Ctrl-F>下移一一个字字符.<Ctrl-B>回移一一个字字符.<Esc-F>下移一一个单单词Router>$valueforcustomers,employees,andpartners.(一行行中长长字串串会自自动滚滚卷).<Ctrl-A>光标移移动到到命令令行的的开始始位置置.<Ctrl-E>光标移移动到到命令令行的的结束束位置置.<Esc-B>回移一一个单单词<Ctrl-F>下移一一个字字符.<Ctrl-B>回移一一个字字符.<Esc-F>下移一一个单单词使用增增强的的编辑辑命令令<Ctrl-D>删除当当前字字符Router>$valueforcustomers,employees,andpartners.Ctrl-PorUparrow调出最最近(前一)使用过过的命命令Ctrl-NorDownarrow调出更更近使使用过过的命命令Router>showhistory显示命命令保保存区区内容容Router>terminalhistorysizelines设置命命令保保存区区大小小回览之之前用用过的的命令令showversion命令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"(outputomitted)--More--Configurationregisteris0x2102查看配置情情况控制台IOSSetuputilityshowstartup-configshowrunning-config将配置参数数保存到NVRAM中ConfigConfigRAMNVRAMshowrunning和showstartup命令wg_ro_c#showstartup-configUsing1359outof32762bytes!version12.0!--More--wg_ro_c#showrunning-configBuildingconfiguration...

Currentconfiguration:

!version12.0!--More--保存在NVRAM中保存在RAM中显示当前运运行的和保保存的配置置情况路由器模式式一览Router(config)#Router>enableRouter#configtermExitCtrl-Z(end)用户模式特权模式全局配置模模式配置模式模式提示Interface Router(config-if)#SubinterfaceRouter(config-subif)#ControllerRouter(config-controller)#LineRouter(config-line)#RouterRouter(config-router)#IPXrouterRouter(config-ipx-router)#保存配置wg_ro_c#wg_ro_c#copyrunning-configstartup-configDestinationfilename[startup-config]?Buildingconfiguration…wg_ro_c#将当前运行行的配置复复制到NVRAM中配置路由器器的各种标标识为路由器或或其端口设设置标识或或信息路由器名Router(config)#hostnamewg_ro_cwg_ro_c(config)#开机时的固固定显示信信息wg_ro_c(config)#bannermotd#AccountingDepartmentYouhaveenteredasecuredsystem.Authorizedaccessonly!#配置路由器器的各种标标识为路由器或或其端口设设置标识或或信息路由器名Router(config)#hostnamewg_ro_cwg_ro_c(config)#开机时的固固定显示信信息wg_ro_c(config)#bannermotd#AccountingDepartmentYouhaveenteredasecuredsystem.Authorizedaccessonly!#端口描述wg_ro_c(config)#interfaceethernet0wg_ro_c(config-if)#descriptionEngineeringLAN,Bldg.18Router(config)#lineconsole0Router(config-line)#loginRouter(config-line)#passwordcisco控制台密码码虚拟终端密密码Router(config)#linevty04Router(config-line)#loginRouter(config-line)#passwordsanjose路由器密码码配置Router(config)#lineconsole0Router(config-line)#loginRouter(config-line)#passwordcisco控制台密码码虚拟终端密密码Router(config)#linevty04Router(config-line)#loginRouter(config-line)#passwordsanjose特权模式明明文密码Router(config)#enablepasswordcisco特权模式加加密密码Router(config)#enablesecretsanfran路由器密码码配置其它控制台台命令Router(config)#lineconsole0Router(config-line)#exec-timeout00Router(config)#lineconsole0Router(config-line)#loggingsynchronous禁止控制台台会话自动动退出重显被打乱乱的控制台台输入Router(config)#interfacetypenumberRouter(config-if)#端口配置type包括serial,ethernet,tokenring,fddi,hssi,loopback,dialer,null,async,atm,bri,andtunnelnumber用来识别具具体的单个个端口Router(config-if)#exit从当前端口口配置模式式退出Router(config)#interfacetypeslot/portRouter(config-if)#模块化端口口的表示法法配置串口进入全局配配置模式Router(config)#interfaceserial0Router(config-if)#Router#configuretermRouter(config)#指定某个端端口配置串口进入全局配配置模式Router(config-if)#clockrate64000Router(config-if)#Router(config)#interfaceserial0Router(config-if)#Router#configuretermRouter(config)#Router(config-if)#bandwidth64Router(config-if)#exitRouter(config)#exitRouter#指定某个端口口设置时钟频率率(只在DCE端)调协波特率(建议)Router#showinterfaceserial0Serial0isup,lineprotocolisupHardwareisHD64570Internetaddressis/24MTU1500bytes,BW64Kbit,DLY20000usec,rely255/255,load1/255EncapsulationHDLC,loopbacknotset,keepaliveset(10sec)Lastinput00:00:09,output00:00:04,outputhangneverLastclearingof"showinterface"countersneverInputqueue:0/75/0(size/max/drops);Totaloutputdrops:0Queueingstrategy:weightedfairOutputqueue:0/1000/64/0(size/maxtotal/threshold/drops)Conversations0/1/256(active/maxactive/maxtotal)ReservedConversations0/0(allocated/maxallocated)5minuteinputrate0bits/sec,0packets/sec5minuteoutputrate0bits/sec,0packets/sec(outputomitted)确认参数修改改情况以太网的media-type命令Router(config)#interfaceethernet2Router(config-if)#media-type10baset为以太网端口口选择适当的的介质类型开启或关闭端端口Router#configuretermRouter(config)#interfaceserial0Router(config-if)#noshutdown%LINK-3-UPDOWN:InterfaceSeria0,changedstatetoup%LINEPROTO-5-UPDOWN:LineProtocolonInterfaceSerial0,changedstatetoup开启已经关闭闭的端口Router#configuretermRouter(config)#interfaceserial0Router(config-if)#shutdown%LINK-5-CHANGED:InterfaceSerial0,changedstatetoadministrativelydown%LINEPROTO-5-UPDOWN:LineprotocolonInterfaceSerial0,changedstatetodown人工关闭端口口路由器的showinterfaces命令Router#showinterfacesEthernet0isup,lineprotocolisupHardwareisLance,addressis00e0.1e5d.ae2f(bia00e0.1e5d.ae2f)Internetaddressis1/24MTU1500bytes,BW10000Kbit,DLY1000usec,rely255/255,load1/255EncapsulationARPA,loopbacknotset,keepaliveset(10sec)ARPtype:ARPA,ARPTimeout04:00:00Lastinput00:00:07,output00:00:08,outputhangneverLastclearingof"showinterface"countersneverQueueingstrategy:fifoOutputqueue0/40,0drops;inputqueue0/75,0drops5minuteinputrate0bits/sec,0packets/sec5minuteoutputrate0bits/sec,0packets/sec81833packetsinput,27556491bytes,0nobufferReceived42308broadcasts,0runts,0giants,0throttles1inputerrors,0CRC,0frame,0overrun,1ignored,0abort0inputpacketswithdribbleconditiondetected55794packetsoutput,3929696bytes,0underruns0outputerrors,0collisions,1interfaceresets0babbles,0latecollision,4deferred0lostcarrier,0nocarrier0outputbufferfailures,0outputbuffersswappedoutRouter#showinterfacesserial1Serial1isup,lineprotocolisupHardwareisHD64570Description:64KbLinetoSanJose::::::::::::::::::Operational..................Connectionproblem...Interfaceproblem........Disabled......................Serial1isup,lineprotocolisupSerial1isup,lineprotocolisdownSerial1isdown,lineprotocolisdownSerial1isadministrativelydown,lineprotocolisdown存活信息载波监测解读端口状态态串口上用showcontroller命令Router#showcontrollerserial0HDunit0,idb=0x121C04,driverstructureat0x127078buffersize1524HDunit0,V.35DTEcable...显示串口线的的线缆类型core_serverwg_sw_a0wg_sw_l20wg_pc_awg_pc_l...console21e0/2fa0/26(portA)e0/2e0e0fa0/26(portA)fa0/1fa0/12fa0/24core_sw_a1wg_ro_lA/BA/Bwg_ro_aconsoleconsoleconsolepod sw ro’’se0A 0 1B 0 1C 0 1D 0 1E 0 1F 0 1G 0 1H 0 1I 0 1J 00 01K 10 11L 20 21可视化目标通过本章的学学习，您应该该掌握以下内内容:开启交换机和和路由器并观观察其启动过过程注意交换机的的出厂初始配配置情况，完完成路由器的的初始参数配配置在网络设备上上进入并辨识识不同的命令令模式在不同的用户户界面下应用用各种帮助和和命令行编辑辑功能查看并确认并并于各网络设设备的基本信信息本章总结9、静夜四无无邻，荒居居旧业贫。。。12月-2212月-22Tuesday,December20,202210、雨中中黄叶叶树，，灯下下白头头人。。。12:00:4712:00:4712:0012/20/202212:00:47PM11、以我我独沈沈久，，愧君君相见见频。。。12月月-2212:00:4712:00Dec-2220-Dec-2212、故故人人江江海海别别，，几几度度隔隔山山川川。。。