如果交換機的login密碼忘記了咋辦啊?
只要你有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,那么密碼的恢復就簡單了。
1.對于Catalyst 2900/3500XL系列來說:
拔下交換機的電源線,然后按住交換機的Mode按鈕,再重新插上交換機的電源線.直到端口Port 1x的LED熄滅之后釋放Mode按鈕。
2.對于Catalyst 2940/2950L系列來說:
拔下交換機的電源線,然后按住交換機的Mode按鈕,再重新插上交換機的電源線.直到STAT的LED熄滅之后釋放Mode按鈕。
3.對于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,對于Windows系列的PC,按下Ctrl+Break鍵;對于UNIX系列的工作站,按下Ctrl+C.如下:
| 以下是引用片段： 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,等出現該信息之后,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: |
| 以下是引用片段： 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: |
| 以下是引用片段： switch:load_helper switch: |
| 以下是引用片段： 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: |
| 以下是引用片段： switch:rename flash:config.text flash:config.old switch: |
| 以下是引用片段： 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) |
| 以下是引用片段： −−− 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 |
| 以下是引用片段： Switch#rename flash:config.old flash:config.text Destination filename [config.text] Switch# |
| 以下是引用片段： Switch#copy flash:config.text system:running−config Destination filename [running−config]? 1131 bytes copied in 0.760 secs Switch# |
Switch(config)#no enable secret
保存配置:
| 以下是引用片段： Switch#write memory Building configuration... [OK] Switch# |
4.對于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熄滅后可以松開Mode按鈕1到2秒.之后將顯示一些指示信息:
| 以下是引用片段： 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# |
switch#flash_init
5.加載幫助文件:
switch#load_helper
6.顯示閃存里的內容:
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,并且如果提示進入setup模式,輸入N:
| 以下是引用片段： switch#boot Continue with the configuration dialog? [yes/no]: N |
Switch#rename flash:config.text.old flash:config.text
10.把配置文件寫進內存:
| 以下是引用片段： 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,并保存到startup-config文件里:
Switch(config)#copy running-config startup-config
其實有的時候硬件安全比軟件安全還要重要些。
