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Reset Cisco Router Password or Reset Switch Password

How to Reset Cisco Router Password or Reset Switch Password?

This is going to be very old but very informative post. People often search for this info in websites on how to reset a cisco router or cisco switch when they forget the password.

The below post will help to reset the router password along with configuration. Once the below steps are performed, the configuration will be erased.

Power ON Cisco Router/Switch that you want to reset.
Press and hold CTRL key + Pause Break. This will let you enter rommon mode.
Once you are at the rommon> prompt, you need to type “confreg 0x2142” without quotation and hit enter.
Type “reset” without quotation and hit enter

You should be able to login now without a password. You have to again change the config register value back to “config-register 0x2102”.

Type “enable” without quotation and hit enter
Type “config terminal” without quotation and hit enter
Type “config-register 0x2102” without quotation and hit enter
Type “write conifg” to write the configuration with the config register value.

That’s all!! Cheers..

Published by Team UC Collabing

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Electrical Engineer CCNA Collaboration CCNA Voice CCNA R&S. I'm Electrical Engineer and I work like Support Engineer for a Telephony Service Provider Company. Before that I had position like Pre-Sale Engineer about small and medium multivendor telephony solutions. I have 5 years of experience working in Telephony Multivendor Projects. I am also 3 years of experience working in Support and implementation about Cisco Collaboration platforms: UCS server, UCM, Cisco Unity, Presence Server, Jabber, Gateway. Support Community is most useful in finding design, implementation and support tricks and shortcuts that greatly help me in my daily activities. If you need to contact me, please you can writte me.


CCNA Routing and Switching
Am a technology enthusiast. I work in network support providing support with implementation, maintaining and precisely troubleshooting the infra.
Realm of collaboration makes me want to learn and face new challenges more and more.