Cisco Catalyst交换机密码恢复策略.doc

Cisco Catalyst交换机密码恢复策略如果交换机的login密码忘记了，别急别急,只要你有PC,有类似超级终端(Hyper Terminal)这样是终端程序,连接到交换机的console口,那么密码的恢复就N简单了.1.对于Catalyst 2900/3500XL系列来说:拔下交换机的电源线,然后按住交换机的Mode按钮,再重新插上交换机的电源线.直到端口Port 1x的LED熄灭之后释放Mode按钮.就这么简单,别告诉我你不知道Mode按钮在哪啊-_-#2.对于Catalyst 2940/2950L系列来说:拔下交换机的电源线,然后按住交换机的Mode按钮,再重新插上交换机的电源线.直到STAT的LED熄灭之后释放Mode按钮.3.对于Catalyst 2955系列来说:Catalyst 2955没有没有外部的Mode按钮,因此就不能使用之前的那种方法来进行密码恢复.在交换机启动时,对于Windows系列的PC,按下Ctrl+Break键;对于UNIX系列的工作站,按下Ctrl+C.如下:C2955 Boot Loader (C2955HBOOTM) Version 12.1(0.0.514), CISCO DEVELOPMENT TESTVERSIONCompiled Fri 13Dec02 17:38 by madisonWSC2955T12 starting.Base ethernet MAC Address: 00:0b:be:b6:ee:00Xmodem file system is available.Initializing Flash.flashfs0: 19 files, 2 directoriesflashfs0: 0 orphaned files, 0 orphaned directoriesflashfs0: Total bytes: 7741440flashfs0: Bytes used: 4510720flashfs0: Bytes available: 3230720flashfs0: flashfs fsck took 7 seconds.done initializing flash.Boot Sector Filesystem (bs:) installed, fsid: 3Parameter Block Filesystem (pb:) installed, fsid: 4/-接下来交换机会在15秒内自动启动,等出现该信息之后,按下Ctrl+Break键或Ctrl+C键-/The system has been interrupted prior to initializing the flash file system to finishloading the operating system software:flash_initload_helperbootswitch:接下来输入flash_init命令:switch:flash_initInitializing Flash.flashfs0: 143 files, 4 directoriesflashfs0: 0 orphaned files, 0 orphaned directoriesflashfs0: Total bytes: 3612672flashfs0: Bytes used: 2729472flashfs0: Bytes available: 883200flashfs0: flashfs fsck took 86 seconds.done Initializing Flash.Boot Sector Filesystem (bs:) installed, fsid: 3Parameter Block Filesystem (pb:) installed, fsid: 4switch:接着输入load_helper命令:switch:load_helperswitch:再输入dir flash:命令显示交换机的文件系统:switch:dir flash:Directory of flash:/2 rwx 1803357 c3500xlc3h2smz.1205.WC7.bin4 rwx 1131 config.text5 rwx 109 info6 rwx 389 env_vars7 drwx 640 html18 rwx 109 info.ver403968 bytes available (3208704 bytes used)switch:把配置文件重命名:switch:rename flash:config.text flash:config.oldswitch:输入boot命令启动交换机:switch:bootLoading flash:c3500xlc3h2smz.1205.WC7.bin.#File flash:c3500xlc3h2smz.1205.WC7.bin uncompressed and installed, entry point: 0x3000executing.(略)不进入setup模式: System Configuration Dialog At any point you may enter a question mark ? for help.Use ctrlc to abort configuration dialog at any prompt.Default settings are in square brackets .Continue with configuration dialog? yes/no: n进入特权模式,恢复原始的配置文件:Switch#rename flash:config.old flash:config.textDestination filename config.textSwitch#把配置文件保存在内存里:Switch#copy flash:config.text system:runningconfigDestination filename runningconfig?1131 bytes copied in 0.760 secsSwitch#进入全局配置模式,取消密码设置:Switch(config)#no enable secret保存配置:Switch#write memoryBuilding configuration.OKSwitch#4.对于Catalyst 3550/3750系列来说:1.通过带有支持Xmodem协议的超级终端程序的PC连接到交换机的console口,把波特率设置为9600.2.拔掉交换机的电源.3.按下交换机上的Mode按钮,与此同时,重新插上交换机的电源线.当交换机端口1X上的LED熄灭后可以松开Mode按钮1到2秒.之后将显示一些指示信息:The system has been interrupted prior to initializing the flash file system. The followingcommands will initialize the flash file system, and finish loading the operating systemsoftware:flash_initload_helperbootswitch#4.初始化flash文件系统:switch#flash_init5.加载帮助文件:switch#load_helper6.显示闪存里的内容:switch#dir flash:7.重命名配置文件:switch#rename flash:config.text flash:config.text.old8.启动系统,并且如果提示进入setup模式,输入N:switch#bootContinue with the configuration dialog? yes/no: N9.进入特权模式,把配置文件名恢复为原始文件名:Switch#rename flash:config.text.old flash:config.text10.把配置文件写进内存:Switch#copy flash:config.text system:running-configSource fil