The AP boot-up sequence includes a random delay interval, followed by a vulnerable time interval. During the vulnerable time interval (2 seconds), the LEDs flash in a particular sequence to indicate that the controller is in the vulnerable time interval. For more information, see the Wireless User Guide.
If you power up the AP and interrupt the power during the vulnerable time interval three consecutive times, the next time the AP reboots, it will restore its factory defaults including the user password and the default IP settings.
Caution
The restoration of factory default settings does not erase the non-volatile log.