Password Recovery

How  to Routers Recover password

Basically there is two ways of recovering  lost password 

Method-1

As soon as the router/switch starts press Ctrl+Break Key Together within 1 min of it to start.

Ctrl+break --- for rommon mode

Default Confrig-register value 0x2102

1.      Press Break on the terminal keyboard within 60 seconds of power up in order to put the router into ROMmon.

2.      Rommon>confreg 0x2142 .

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

3.      rommon 2>Reset .

The router reboots, but ignores the saved configuration. Now you are in setup mode

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

5.      Type configure memory or copy startup-config running-config in order to copy the nonvolatile RAM (NVRAM) into memory.

Do not type copy running-config startup-config or write. These commands erase your startup configuration.

Now you can change the password and save the configuration in startup configuration in nvram

6.     Router-Rcy(config)#config-register 0x2102-----------------to set the default config-reg value

7.      Type write memory or copy running-config startup-config in order to commit the changes.

Summary:-

Router-Rcy#reload

###################################ctrl+break

Rommon>confreg 0x2142

Rommon>reset

###################################

Router-Rcy>

Router-Rcy#copy startup-config running-config

Router-Rcy(config) #-----------------change the required password

Router-Rcy (config)#config-register 0x2102

Router-Rcy#copy running-config startup-config

Router-Rcy #exit

Now you know the password

Procedure 2

Complete these steps in order to recover your password:

1.      Shut down the router.

2.      Remove the compact flash that is at the back of the router.

3.      Power on the router.

4.      Once the Rommon1> prompt appears, enter this command:

5.    Rommon1> confreg 0x2142

6.      Insert the compact flash.

7.      Type reset.

8.      Router-Rcy>enable.

9.       Router-Rcy#configure memory 

create a new user name and password:

Router-Rcy#config-register              0x2102

Router-Rcy#write memory

10.  Reload the router, and then use the new user name and password to log in to the route