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Cisco 3750 password recovery quick tip

July 22nd, 2009 philippe No comments
CISCO 3750

CISCO 3750

This password recovery method also applies to at least the:

Cisco 2950, Cisco 2960, Cico 3550, Cisco 3560 and Cisco 3750 series.
The only difference will be for how long you will hold the mode button,
from my experience just try to hold it longer if it doesn’t work.
(It should be around 15 seconds for the 3750.)
Console port settings :
  • 9600 bits
  • 8 data bits
  • ‘none’ parity
  • 1 stop bit
THE 18 Steps :
  1. Connect to Cisco 3750 with the Console Cable at it’s original settings
  2. Power On the switch Cisco 3750
  3. Press Mode
  4. then on the console
  5. switch: flash_init
  6. switch: load_helper
  7. switch: dir flash:
  8. switch: rename flash:config.text flash:config.text.old
  9. switch: boot
  10. Continue with the configuration dialog? [yes/no]: N
  11. Switch> enable
  12. Switch# rename flash:config.text.old flash:config.text
  13. Switch# copy flash:config.text system:running-config
  14. Switch# conf t
  15. Switch (config)# enable secret <PASSWORD>
  16. Switch (config)# exit
  17. Switch# copy running-config startup-config
  18. Switch# reload
Categories: Cisco, Networks Tags: , , , ,