Password Recovery for Catalyst Switches

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通过终端或带有仿真终端程序(比如 Hyper Terminal)的 PC,连接到交换机的 console 口.
Password Recovery for Catalyst 2900/3500XL 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.
Password Recovery for Catalyst 2940/2950L 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.
Password Recovery for Catalyst 2955 对于 2955 交换机,它没有外部的 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  (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 finish
loading the operating system software:
flash_init load_helper bootswitch:
接下来输入 flash_init 命令: switch: flash_init Initializing Flash...
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:
接着输入 load_helper 命令: switch: load_helper switch:
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    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:
输入 boot 命令启动交换机:
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)
不进入 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
进入特权模式,恢复原始的配置文件:
Switch#rename flash:config.old flash:config.text
Destination filename [config.text] Switch#
把配置文件保存在内存里:
Switch#copy flash:config.text system:running−config
Destination filename [running−config]?
1131 bytes copied in 0.760 secs
Switch# 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 memory
Building configuration...
[OK] Switch#



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