思科Catalyst系列交換機密碼恢復妙招
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如果交換機的login密碼忘記了咋辦啊? 別急別急,只要妳有PC,有類似超級終端(Hyper Terminal)這樣是終端程序,連接到交換機的console口,那麽密碼的恢復就簡單了。 1.對於Catalyst 2900/3500XL系列來說: 拔下交換機的電源線,然後按住交換機的Mode按鈕,再重新插上交換機的電源線.直到端口Port 1x的LED熄滅之後釋放Mode按鈕。 就這麽簡單,別告訴我妳不知道Mode按鈕在哪啊。 2.對於Catalyst 2940/2950L系列來說: 拔下交換機的電源線,然後按住交換機的Mode按鈕,再重新插上交換機的電源線.直到STAT的LED熄滅之後釋放Mode按鈕。 3.對於Catalyst 2955系列來說: Catalyst 2955沒有沒有外部的Mode按鈕,因此就不能使用之前的那種方法來進行密碼恢復.在交換機啟動時,對於Windows系列的PC,按下Ctrl+Break鍵;對於UNIX系列的工作站,按下Ctrl+C.如下: C2955 Boot Loader (C2955?HBOOT?M) Version 12.1(0.0.514), CISCO DEVELOPMENT TEST VERSION Compiled Fri 13?Dec?02 17:38 by madison WS?C2955T?12 starting… Base ethernet MAC Address: 00:0b:be:b6:ee:00 Xmodem file system is available. Initializing Flash… flashfs[0]: 19 files, 2 directories flashfs[0]: 0 orphaned files, 0 orphaned directories flashfs[0]: Total bytes: 7741440 flashfs[0]: Bytes used: 4510720 flashfs[0]: Bytes available: 3230720 flashfs[0]: flashfs fsck took 7 seconds. …done initializing flash. Boot Sector Filesystem (bs:) installed, fsid: 3 Parameter Block Filesystem (pb:) installed, fsid: 4 /—接下來交換機會在15秒內自動啟動,等出現該信息之後,按下Ctrl+Break鍵或Ctrl+C鍵—-/ The system has been interrupted prior to initializing the flash file system to finish loading the operating system software: flash_init load_helper bootswitch: 接下來輸入flash_init命令: switch:flash_init Initializing Flash… flashfs[0]: 143 files, 4 directories flashfs[0]: 0 orphaned files, 0 orphaned directories flashfs[0]: Total bytes: 3612672 flashfs[0]: Bytes used: 2729472 flashfs[0]: Bytes available: 883200 flashfs[0]: flashfs fsck took 86 seconds ….done Initializing Flash. Boot Sector Filesystem (bs:) installed, fsid: 3 Parameter Block Filesystem (pb:) installed, fsid: 4 switch: 接著輸入load_helper命令: switch:load_helper switch: 再輸入dir flash:命令顯示交換機的文件系統: switch:dir flash: Directory of flash:/ 2 ?rwx 1803357 c3500xl?c3h2s?mz.120?5.WC7.bin 4 ?rwx 1131 config.text 5 ?rwx 109 info 6 ?rwx 389 env_vars 7 drwx 640 html 18 ?rwx 109 info.ver 403968 bytes available (3208704 bytes used) switch: 把配置文件重命名: switch:rename flash:config.text flash:config.old switch: 輸入boot命令啟動交換機: switch:boot Loading “flash:c3500xl?c3h2s?mz.120?5.WC7.bin"…############################### ################################################################################ ###################################################################### File “flash:c3500xl?c3h2s?mz.120?5.WC7.bin" uncompressed and installed, entry po int: 0x3000 executing… (略) 不進入setup模式: ??? System Configuration Dialog ??? At any point you may enter a question mark ‘?’ for help. Use ctrl?c to abort configuration dialog at any prompt. Default settings are in square brackets ‘[]’. Continue with configuration dialog? [yes/no]: n 進入特權模式,恢復原始的配置文件: Switch#rename flash:config.old flash:config.text Destination filename [config.text] Switch# 把配置文件保存在內存裏: Switch#copy flash:config.text system:running?config Destination filename [running?config]? 1131 bytes copied in 0.760 secs Switch# 進入全局配置模式,取消密碼設置: Switch(config)#no enable secret 保存配置: Switch#write memory Building configuration… [OK] Switch# 搞定了@_@ 4.對於Catalyst 3550/3750系列來說: 1.通過帶有支持Xmodem協議的超級終端程序的PC連接到交換機的console口,把波特率設置為9600。 2.拔掉交換機的電源。 3.按下交換機上的Mode按鈕,與此同時,重新插上交換機的電源線。當交換機端口1X上的LED熄滅後可以松開Mode按鈕1到2秒,之後將顯示壹些指示信息: The system has been interrupted prior to initializing the flash file system. The following commands will initialize the flash file system, and finish loading the operating system software: flash_init load_helper boot switch# 4.初始化flash文件系統: switch#flash_init 5.加載幫助文件: switch#load_helper 6.顯示閃存裏的內容: switch#dir flash: 7.重命名配置文件: switch#rename flash:config.text flash:config.text.old 8.啟動系統,並且如果提示進入setup模式,輸入N: switch#boot Continue with the configuration dialog? [yes/no]: N 9.進入特權模式,把配置文件名恢復為原始文件名: Switch#rename flash:config.text.old flash:config.text 10.把配置文件寫進內存: Switch#copy flash:config.text system:running-config Source filename [config.text]? Destination filename [running-config]? 11.進入全局配置模式更改密碼: Switch(config)#enable secret {password} 12.退出,並保存到startup-config文件裏: Switch(config)#copy running-config startup-config
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