[Guide] How to recover Cisco Router password

  10:24 AM    Santosh




    • Turn off & Turn on the Router.


    • Press the Break key or key sequence to put the router into ROM Monitor mode. The sequence might be CTRL-D, CTRL-Break or another combination.


    • At the > prompt, type 0 to record the current value of the configuration register normally 0x2102, or 0x102.



>o

Configuration register = 0x2102 at last boot

Bit# Configuration register option settings:

15 Diagnostic mode disabled.



  • Type o/r 0x2142 to tell the router to boot from flash without loading the configuration in NVRAM at the next reload.


  • Type i to have the router reboot. The router ignores the configuration in NVRAM.


  • The router runs the setup dialog, Type no or press Ctrl-C to skip the initial setup Dialog.


  • Type enable at the Router> prompt to go to privileged exec mode.


  • Copy the startup configuration to the running configuration by using the configure memory or copy startup-config running-config commands. Do not type configure terminal. If you use the configure terminal command, you overwrite the configuration stored in NVRAM.


  • View the configuration by typing write terminal or show running-config. View the configured line, vty and enable passwords. Any encrypted passwords need to be changed.


  • Enter the configuration mode by typing configure terminal. Change the line of enable passwords as necessary.


  • Type config-register 0x2102 to return the router to normal operation at the next reloads.


  • Exit configuration mode by pressing Ctrl-Z


  • Save your changes by typing write memory or copy running-config startup-config.


  • Reload the router and verify the passwords.


    You are Done..