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How to reset Cisco Router Password

January 3rd, 2012 Leave a comment Go to comments
There are occasions that we forget the router password or sometimes wanted to take out our old cisco router for some lab purposes. But what if it asks for password which we dont know? or we forget ? Here are the steps to recover a cisco router password.
Step-1 : First witch off the router and then switch it on after 10 seconds , within the first few seonds of booting press the CTRL+Break Keys, The router will enter the ROM Monitor mode with the following prompt.
Rommon1>
Step-2: In the ROM Monitor mode change the configuration Register to 0×2142 to ignore the Startup Config file upon booting
Rommon1>confreg 0×2142
Rommon2>b 
On Booting the router will enter the Setup mode .
Would you like to enter the initial configuration guidelines (yes/no):

Step-3:
 Skip this option by pressing CTRL+C.The router will now enter the User Exec mode
Router>
Step-4: Enter the privilige mode and copy the startup configuration file to the RAM(Running-Config)
Router>enable
Router#copy startup-config running-config
 Step-5: Change the enable/enable secret or whatever password you want to change and then the configuration to the NVRAM
Router(config)#enable secret Cisco
Router#wr

Step-6:
Now change the config-register value to the default

Router(config)#config-register 0×2102
The procedure is quite useful in case someone has lost the password and wants to break it without affecting the rest of the configuration .
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