Reset enable password on cisco router

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To reset enable password on cisco router use following steps:

1. Connect to router on console port using standard 9600 8N1 (9600 bits per second, no parity, 8-bit, 1 stop-bit, no flow control)
2. If console password is not set or known then use it. Use 'show version' and not current value of configuration register.
3. Reboot and use break sequence

   Hyper-terminal

   Ctrl + Break

   Minicom

   Ctrl+a f

   Putty

   Right click on title bar, choose special command -> break

4. On 'rommon1>' prompt use to disable loading of startup-config as running-config on system boot:

   confreg 0x2142

5. For reboot

   reset

6. Cancel initial configuration wizard (Ctrl+C)
7. Go to enable mode using enable after reboot
8. Get old configuration back using 'copy startup-config running-config'

   Do not do reverse, else all config would be lost

9. Look at current configuration, reset enable password and no shut all configured interfaces using:

   show running
   show ip interface brief
   config t
   enable secret
   int <int-name-number>  #for each configured interface
   no shut

10. Again reset configuration register value so that startup configuration is copied to running-config on startup, using:

    config t
    config-register 0x2102 (or value noted before rebooting)

11. Save the entire configuration for next reboot using:

    copy running-config startup-config

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