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Cisco 2621 路由器密码恢复实验

2012-03-14 20:46 浏览: Cisco 2621
清空路由器所有配置,重启
Router#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
%SYS-7-NV_BLOCK_INIT: Initialized the geometry of nvram
Router#reload
Proceed with reload? [confirm]


设置密码,并保存配置
Router>en
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#enable password 123
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
 
Router#wr
Building configuration...
[OK]


密码恢复
关闭路由器电源并重新开机,在路由器启动时,按【Ctrl+Break】键中断路由器的启动过程,进入rommon 模式。
rommon 1 > confreg 0x2142
rommon 2 > boot
......

         --- System Configuration Dialog ---
 
Continue with configuration dialog? [yes/no]: no


此时已可以直接进入特权模式,将NVRAM中的配置复制到RAM中

Router>
Router>en
Router#copy startup-config running-config
Destination filename [running-config]? 
 
429 bytes copied in 0.416 secs (1031 bytes/sec)
 
%SYS-5-CONFIG_I: Configured from console by console


重新设置密码,保存配置,重启。
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#enable password 123456
Router(config)#conf
Router(config)#config-register 0x2102
Router(config)#exit
 
%SYS-5-CONFIG_I: Configured from console by console
Router#wr
Building configuration...
[OK]

Router#reload
Proceed with reload? [confirm]

文章来源:
http://6887842.blog.51cto.com/3828451/806097

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