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Community Member

reset router password

I have a cisco 1601 router. I'm trying to reset the password over the console port, but I'm having some trouble, I've never done this before. I'm trying to follow the directions in a pdf I found, but the router is saying the config-register command doesn't exist.

Easton>confreg 0x142

Translating "confreg"

% Unknown command or computer name, or unable to find computer address

2 REPLIES
Community Member

Re: reset router password

sorry. somehow this went to the wrong forum

Community Member

Re: reset router password

Hi,

1) - Before reloading, note the value of the configuration register from "show version" command, generally 0x2102

Router#sh ver

...

Configuration register is 0x2102

2) - reload the router:

Router#reload

if havenot the access to the router (lost password) make a cool boot

3) - Type the break sequence during bootup to enter the ROM monitor mode (ROMMON):

"ALT-B" or "ALT-C"

4) - Use "confreg" command to change the value of the configuration command to make the router ignore the startup configuration in the next bootup:

Rommon1>confreg 0x2142

5) - reboot by typing:

i

6) - Break the setup system config dialog or type "n" to not erase the NVRAM Backup config file

7) - restore your startup config and change the password

8) - Now you can restore the config registry value from 0x2142 to 0x2102:

Router(config)#config-register 0x2102

!!!!NOTE that with a physical access to the device you can do everything you want, so first and before anything make sure that your devices are physically secured!!!!

I hope this will help you!

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