יום שני, 1 בפברואר 2010

Cisco Factory Reset Password Recovery

If you need to do a "factory reset" on one of these you can.


Connect to the console using serial cable.
Switch on while hitting CTRL-BREAK

(on laptop hit FN-CTRL-BREAK)

 

Tricky, may take a few attempts - need to be hitting it really early on in the boot process.
Get rommon>

 

confreg 0x2142

 

OR

1. >confreg, >yes, >no to everything except "ignore system config info".

2. >reset


It will then reboot from an alternate configuration file, and you're in! Now however, to clear the existing setup and revert the router to a good state.
  1. Router>enable
  2. Router#conf t
  3. Router(config)config-register 0x2102
  4. Router(config)exit
  5. Router>write memory
  6. Router>reload

Useful guide:
FREE VIDEO: How to Reset or Recover your Lost Cisco Router or Switch Password
http://happyrouter.com/free-video-how-to-reset-or-recover-your-lost-cisco-router-or-switch-password

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