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New Member

How do I start over on Cisco 1841?

I have a cisco 1841 router and setup the default config a few months ago and for some reason I cannot remember the password.

I would like to start over and just rebuild the thing, or is it easier to just recover the password? Of course Im not sure how to do either.

Some tips or documentation would be great thanks.

1 ACCEPTED SOLUTION

Accepted Solutions
Silver

Re: How do I start over on Cisco 1841?

Hi ,

*** Router config will be present as it is after recovering password.

Check the below link for password recovery .

http://www.cisco.com/en/US/products/hw/routers/ps221/products_password_recovery09186a0080094773.shtml

PASSWORD RECOVERY

---------------------------------

TO MAKE A PASSWORD RECOVEY YOU MUST BE DIRECTLY CONSOLED TO THE ROUTER.

POWERCYCLE THE ROUTER AND ENTER THE BREAK SEQUENCE

?CTRL+BREAK or BTRL+BREAK+F6?

YOU WILL BE IN ROMMON MODE:

rommon 1>confreg 0x2142

rommon 2>reset (if no reset powercycle the router)

YOU WILL BE ASKED TO GET IN THE CONFIGURATION MODE, TYPE NO

Enter in the configuration mode? N

press return go get started

Router>enable (won?t ask for password, if it does go to step 1)

Router#show start

HIGHLIGHT EVERYTHING AND MAKE A COPY OF THE CONFIGURATION INTO A NOTEPAD (this is very

important, it?s to do a backup of your configuration, just to have it in case something

goes wrong)

Router#copy start run

(destination file run: press enter)

Router#

Router#config t

*** To clear the enable password ****

Router(config)#no enable secret

Router(config)#no enable password

**** To clear the telnet password*******

Router(config)#line vty 0 4

Router(config-line)#no login

Router(config-line)#no login local

Router(config-line)#no password

Router(config-line)# exit

*** to clear the console password ***

Router(config)#line con 0

Router(config-line)#no login

Router(config-line)#no login local

Router(config-line)#no password

Router(config-line)# exit

Router(config)#config-register 0x2102

Router(config)#exit

Router#write mem

Router#show ver (make sure that the config register is set to 0x2102)

Router#reload

Confirm with reload? Y

Router(config)#exit

Hope it helps you.Plz rate it.

Thanks,

satish

2 REPLIES
Silver

Re: How do I start over on Cisco 1841?

Hi ,

*** Router config will be present as it is after recovering password.

Check the below link for password recovery .

http://www.cisco.com/en/US/products/hw/routers/ps221/products_password_recovery09186a0080094773.shtml

PASSWORD RECOVERY

---------------------------------

TO MAKE A PASSWORD RECOVEY YOU MUST BE DIRECTLY CONSOLED TO THE ROUTER.

POWERCYCLE THE ROUTER AND ENTER THE BREAK SEQUENCE

?CTRL+BREAK or BTRL+BREAK+F6?

YOU WILL BE IN ROMMON MODE:

rommon 1>confreg 0x2142

rommon 2>reset (if no reset powercycle the router)

YOU WILL BE ASKED TO GET IN THE CONFIGURATION MODE, TYPE NO

Enter in the configuration mode? N

press return go get started

Router>enable (won?t ask for password, if it does go to step 1)

Router#show start

HIGHLIGHT EVERYTHING AND MAKE A COPY OF THE CONFIGURATION INTO A NOTEPAD (this is very

important, it?s to do a backup of your configuration, just to have it in case something

goes wrong)

Router#copy start run

(destination file run: press enter)

Router#

Router#config t

*** To clear the enable password ****

Router(config)#no enable secret

Router(config)#no enable password

**** To clear the telnet password*******

Router(config)#line vty 0 4

Router(config-line)#no login

Router(config-line)#no login local

Router(config-line)#no password

Router(config-line)# exit

*** to clear the console password ***

Router(config)#line con 0

Router(config-line)#no login

Router(config-line)#no login local

Router(config-line)#no password

Router(config-line)# exit

Router(config)#config-register 0x2102

Router(config)#exit

Router#write mem

Router#show ver (make sure that the config register is set to 0x2102)

Router#reload

Confirm with reload? Y

Router(config)#exit

Hope it helps you.Plz rate it.

Thanks,

satish

New Member

Re: How do I start over on Cisco 1841?

Thanks alot Satish, that worked great, thanks alot.

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