思科Catalyst系列交換機密碼恢復妙招

十一月 5, 2010 by
Filed under: 未分類 

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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