Finding an Cisco lightweight AP physically using command line
To enable the controller to send commands to the access point from its CLI, enter this command
debug ap enable your_access_point_name
To cause a specific access point to flash its LEDs for a specified number of seconds, enter this command:
debug ap command "led flash seconds" your_access_point_name
You can enter a value between 1 and 3600 seconds for the seconds parameter.
To disable LED flashing for a specific access point, enter this command:
debug ap command "led flash disable" your_access_point_name