cisco 2900xl, 3500xl, 2950, 3550密码恢复

Cisco 2950交换机密码恢复

1） 按下MODE键后给2950加电。
2） 在出现的菜单中选择第一项
system software:

flash_init
load_helper
boot

switch:flash_init
switch:load_helper
switch:dir flash: 可以看到flash中有config.text文件
3） 重命名flash:config.text文件。
switch: ren flash:config.text flash:config.old

4） 重启交换机
switch: boot
5） 当出现问你是否进行配置时，选择NO（因为它找不到配置文件config.text文件了）
Would you like to enter the initial configuration dialog? [yes/no]:no
6） 从用户模式登录特权模式，无需密码。
Switch>en
Switch#
7） 恢复刚才重命令的配置文件名.
Switch#ren flash:config.old flash:config.text
Destination filename [config.text]?直接回车
8） 用老的配置文件替换当前的配置文件。
Switch#copy flash:config.text system:running-config
Destination filename [running-config]?直接回车
% Login disabled on line 1, until 'password' is set
% Login disabled on line 2, until 'password' is set
% Login disabled on line 3, until 'password' is set
% Login disabled on line 4, until 'password' is set
% Login disabled on line 5, until 'password' is set
% Login disabled on line 6, until 'password' is set
% Login disabled on line 7, until 'password' is set
% Login disabled on line 8, until 'password' is set
% Login disabled on line 9, until 'password' is set
% Login disabled on line 10, until 'password' is set
% Login disabled on line 11, until 'password' is set
% Login disabled on line 12, until 'password' is set
% Login disabled on line 13, until 'password' is set
% Login disabled on line 14, until 'password' is set
% Login disabled on line 15, until 'password' is set
% Login disabled on line 16, until 'password' is set
1531 bytes copied in 2.364 secs (765 bytes/sec)
9） 修改使用密码。
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#no en secret
Switch(config)#en secret cisco
Switch(config)#
10） 重启交换机，密码已被改成cisco.
Switch#reload
Proceed with reload? [confirm]