Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have two 3750G stacked and I am locked out of console access. The startup-config console settings are login and local. However, there is no local database, i.e, no username and password is specified. After attempting the normal password recovery (init_flash, load_helper, dir, rename, etc) and booting, the console screen still shows the "username" prompt. And since there is no username I am stuck. The switches are not currently in production so I can do anything to them to recover.

share|improve this question

restart it and use the serial console to interrupt boot.

Once you're at the switch prompt, do the following:

flash_init - initializes the flash (doesn't format it)

load_helper - makes the following command accessible

rename flash:config.text flash:config.text.prev


Once it's booted, I'd suggest copying off the old config, modifying it with a user and then loading it back onto the switch.

share|improve this answer
Did that, still boots back to "username" prompt. – Steve Feb 27 '13 at 9:38
run dir flash: after load_helper - what is the output? – Olipro Feb 27 '13 at 10:12

Is this 3750 stacked sometimes you have to disconnect the stack if it is to go to password recovery.

Unless of course somebody configured no service password config.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.