思科设备工作模式简介

CISCO网络工程师内部讲义Cisco路由器配置模式*一般用户模式只限于路由器的某一些有限的权限登录到机器的缺省状态router全局设置状态在特权执行态输入configterminal则进入该态router(config)#特权模式有检查，配置，调试等所有权限通过enable可进入此状态router#其他的设置状态在特权执行状态输入相应的命令时进入例如：interfaceserial2/0router(config-mode)#CISCO网络工程师内部讲义用户模式Router特权模式Router#全局配置模式Router(config)#子配置模式Router(config-mode)#enableconfigureterminalexitendctrl+z具体命令exitendctrl+zexit各种模式间的转换*路由器模式一览Router(config)#RouterenableRouter#configtermExitCtrl-Z(end)用户模式特权模式全局配置模式配置模式模式提示InterfaceRouter(config-if)#SubinterfaceRouter(config-subif)#ControllerRouter(config-controller)#LineRouter(config-line)#RouterRouter(config-router)#IPXrouterRouter(config-ipx-router)#CISCO网络工程师内部讲义wg_ro_c#?Execcommands:access-enableCreateatemporaryAccess-Listentryaccess-profileApplyuser-profiletointerfaceaccess-templateCreateatemporaryAccess-ListentrybfeFormanualemergencymodessettingcdChangecurrentdirectoryclearResetfunctionsclockManagethesystemclockconfigureEnterconfigurationmodeconnectOpenaterminalconnectioncopyCopyfromonefiletoanotherdebugDebuggingfunctions(seealso'undebug')deleteDeleteafiledirListfilesonafilesystemdisableTurnoffprivilegedcommandsdisconnectDisconnectanexistingnetworkconnectionenableTurnonprivilegedcommandseraseEraseafilesystemexitExitfromtheEXEChelpDescriptionoftheinteractivehelpsystem--More--路由器特权模式命令列表CISCO网络工程师内部讲义路由器上下文相关帮助Router#clokTranslatingCLOK%Unknowncommandorcomputername,orunabletofindcomputeraddressRouter#cl?clearclockRouter#clock%Incompletecommand.Router#clock?setSetthetimeanddateRouter#clockset%Incompletecommand.Router#Ctrl-Pclockset?hh:mm:ssCurrentTime•字符解析•命令提示•命令回调CISCO网络工程师内部讲义查看配置情况*控制台IOSSetuputilityshowstartup-configshowrunning-config将配置参数保存到NVRAM中ConfigConfigRAMNVRAMCISCO网络工程师内部讲义showrunning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中显示当前运行的和保存的配置情况Router(config)#interfacetypenumberRouter(config-if)#端口配置•type包括serial,ethernet,tokenring,fddi,hssi,loopback,dialer,null,async,atm,bri,andtunnel•number用来识别具体的单个端口Router(config-if)#exit•从当前端口配置模式退出Router(config)#interfacetypeslot/portRouter(config-if)#•模块化端口的表示法配置串口进入全局配置模式Router(config)#interfaceserial0/0Router(config-if)#Router#configuretermRouter(config)#指定某个端口配置串口进入全局配置模式Router(config-if)#clockrate64000Router(config-if)#Router(config)#interfaceserial0/0Router(config-if)#Router#configuretermRouter(config)#Router(config-if)#bandwidth64000Router(config-if)#exitRouter(config)#exitRouter#指定某个端口设置时钟频率(只在DCE端)调协波特率(建议)CISCO网络工程师内部讲义禁用或启用一个接口Router#configuretermRouter(config)#interfaceserial0Router(config-if)#noshutdown%LINK-3-UPDOWN:InterfaceSeria0,changedstatetoup%LINEPROTO-5-UPDOWN:LineProtocolonInterfaceSerial0,changedstatetoup•Enablesaninterfacethatisadministrativelyshutdown启用Router#configuretermRouter(config)#interfaceserial0Router(config-if)#shutdown%LINK-5-CHANGED:InterfaceSerial0,changedstatetoadministrativelydown%LINEPROTO-5-UPDOWN:LineprotocolonInterfaceSerial0,changedstatetodown•Administrativelyturnsoffaninterface管理性关闭Router#showinterfaceserial0/0Serial0isup,lineprotocolisupHardwareisHD64570Internetaddressis10.140.4.2/24MTU1500bytes,BW64Kbit,DLY20000usec,rely255/255,load1/255EncapsulationHDLC,loopbacknotset,keepaliveset(10sec)Lastinput00:00:09,output00:00:04,outputhangneverLastclearingofshowinterfacecountersneverInputqueue: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)确认参数修改情况CISCO网络工程师内部讲义Router#showinterfacesserial1Serial1isup,lineprotocolisupHardwareisHD64570Description:64KbLinetoSanJose::::::::::::::::::Operational..................Connectionproblem...Interfaceproblem........Disabled......................Serial1isup,lineprotocolisupSerial1isup,lineprotocolisdownSerial1isdown,lineprotocolisdownSerial1isadministrativelydown,lineprotocolisdownKeepalivesCarrierDetect接口的状态CISCO网络工程师内部讲义给接口配置IP地址*BecauseIPaddressisinterfacespecific,youneedtogotointerfaceRouterenableRouter#configtRouter(config)#ints0/0Router(config-if)#ipaddress172.16.20.2255.255.255.0Router(config-if)#intf0/0Router(config-if)#ipaddress172.16.10.1255.255.255.0Router(config-if)#^ZCISCO网络工程师内部讲义使用ping和trace命令测试连通性和路径Router#ping10.1.1.10Typeescapesequencetoabort.Sending5,100-byteICMPEchosto10.1.1.10,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=4/4/4msRouter#trace10.1.1.10Typeescapesequencetoabort.Tracingtherouteto10.1.1.10110.1.1.104msec4msec4msecRouter#