忘记了 Cisco 2500密码怎么办？
>o //显示register值Configuration register = 0x2142 at last boot
Bit# Configuration register option settings:
15 Diagnostic mode disabled
14 IP broadcasts do not have network numbers
13 Boot default ROM software if network boot fails
12-11 Console speed is 9600 baud
10 IP broadcasts with ones
08 Break disabled
07 OEM disabled
06 Ignore configuration enabled
03-00 Boot file is cisco2-2500 (or 'boot system' command)
>o/r 0x2142 //修改register值
>i //重新启动路由器
进入路由器，EN就不要密码了，
进入路由器：
Router#configure terminal
Router(config)#config-register 0x2102 //恢复正常配置寄存器
Router#copy running-config startup-config//保存当前配置信息
或： Router# wr
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