3500系列交换机密码恢复

1.拔掉交换机的电源线
2 。用超级终端和控制线连到交换机，超级终端的设置是：
9600 baud rate
No parity
8 data bits
1 stop bit
No flow control
3 。按住交换机前面板的“mode”按钮，插上电源线，当端口1上面的灯不亮后，放松“mode”按钮；
4 。这时超级终端上应该显示：
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
5 。输入flash_init
6 。输入load_helper
7. 输入dir flash:
这时显示：
Directory of flash:
2 -rwx 843947 Mar 01 1993 00:02:18 C2900XL-h-mz-112.8-SA
4 drwx 3776 Mar 01 1993 01:23:24 Html
66 -rwx 130 Jan 01 1970 00:01:19 env_vars
68 -rwx 1296 Mar 01 1993 06:55:51 config.text
1728000 bytes total (456704 bytes free)
8 。输入rename flash:config.text flash:config.old
9.输入boot，重新启动系统
10 。系统启动完后显示：Continue with the configuration dialog? [yes/no] :
输入N
11.输入enable
12.进入enable模式后，输入rename flash:config.old flash:config.text
13 。接着按以下步骤操作：
Switch# copy flash:config.text system:running-config
Source filename [config.text]? (press Return)
Destination filename [running-config]? (press Return)
14。接着按以下步骤操作：
switch#configure terminal
switch(config)#no enable secret
switch(config)#no enable passWord
switch(config)#exit
switch#write memory
这时,系统就恢复没有密码的状态了