Cisco 2900 ISR Password Recovery

This article explains the steps to recover the enable and secret passwords.  The enable password password can be recovered, but the enable secret password must be replaced with a new password.

  • Switch off or shut down the router
  • Remove the compact flash that is on the back of the router
  • Power on the router
  • Once the router is on Rommon mode, reinsert the compact flash
  • Enter confreg 0x2142 at the rommon 1> prompt in order to boot from Flash.  To bypass the startup configuration
  • Enter reset at the rommon 2> prompt
  • Skip the initial setup procedure by pressing Ctrl-C
  • Enter enable at the Router> prompt
  • Enter copy startup-config running-config in order to copy the NVRAM into memory
  • Enter the show running-config command
  • Enter configure terminal
  • Enter enable secret <secret> in order to change the enable secret
    hostname(config)#enable secret innophia
    
  • Enter the no shutdown command on every interface that you use
  • Enter config-register 0x2102 or any other value you require
    hostname(config)#config-register 0x2102
    
  • Press Ctrl-z or end in order to leave the configuration mode
  • Enter copy running-config startup-config to write the NVRAM to memory