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New Member

Cisco 1921 Router default password invalid

Hi All,

I am facing a weird issue where after resetting the Cisco router 1921, i am trying to login using default username "cisco" and password "cisco"

and i am getting password invalid error.

I have hard resetted the router using the the key in the back.

Can someone help me in resolving this error. Its frustrating when you cant even login to a new router

Thanks!!

Everyone's tags (6)
1 ACCEPTED SOLUTION

Accepted Solutions

Re: Cisco 1921 Router default password invalid

Some devices are configured with onetime password. If you log on with these credentials and save the configuration, the default password is erased. If you don't have set a new password, you'll end up with an inaccessible box. This avoids production devices with the default manufacture password and being exposed.



You need to do a password recovery procedure.



1) connect via console to the device
2)power on the device
3)hit ctrl+break until you are in rommon mode


Type confreg 0x2142 at the rommon 1> prompt in order to boot from Flash.

This step bypasses the startup configuration where the passwords are stored.

Type reset at the rommon 2> prompt.

The router reboots, but ignores the saved configuration.

Type no after each setup question, or press Ctrl-C in order to skip the initial setup procedure.

Type enable at the Router> prompt.

You are in enable mode and should see the Router# prompt.

As it's a new router without previous configuration it's not really required to restore the previous saved configuration. But if you would do: copy start run

Warning: Do not enter copy running-config startup-config or write. These commands erase your startup configuration.

Type configure terminal.

The hostname(config)# prompt appears.

Type enable secret in order to change the enable secret password. For example:

hostname(config)#enable secret YourPassword


Restore the previous conf-reg value:
hostname(config)#config-register 0x2102

If you did a copy start run, you must also configure a new user:

Username youruser secret yourpassword

And of course: save your configuration


Don't forget to rate useful posts ;)





Sent from Cisco Technical Support iPad App

2 REPLIES

Re: Cisco 1921 Router default password invalid

Some devices are configured with onetime password. If you log on with these credentials and save the configuration, the default password is erased. If you don't have set a new password, you'll end up with an inaccessible box. This avoids production devices with the default manufacture password and being exposed.



You need to do a password recovery procedure.



1) connect via console to the device
2)power on the device
3)hit ctrl+break until you are in rommon mode


Type confreg 0x2142 at the rommon 1> prompt in order to boot from Flash.

This step bypasses the startup configuration where the passwords are stored.

Type reset at the rommon 2> prompt.

The router reboots, but ignores the saved configuration.

Type no after each setup question, or press Ctrl-C in order to skip the initial setup procedure.

Type enable at the Router> prompt.

You are in enable mode and should see the Router# prompt.

As it's a new router without previous configuration it's not really required to restore the previous saved configuration. But if you would do: copy start run

Warning: Do not enter copy running-config startup-config or write. These commands erase your startup configuration.

Type configure terminal.

The hostname(config)# prompt appears.

Type enable secret in order to change the enable secret password. For example:

hostname(config)#enable secret YourPassword


Restore the previous conf-reg value:
hostname(config)#config-register 0x2102

If you did a copy start run, you must also configure a new user:

Username youruser secret yourpassword

And of course: save your configuration


Don't forget to rate useful posts ;)





Sent from Cisco Technical Support iPad App

New Member

Re: Cisco 1921 Router default password invalid

Thanks Davy. That solved the login issue.

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