Displays fan status information.
Privileged EXEC mode
The show environment fan command displays the following information:
| Output field | Description | 
|---|---|
| OK | Fan is functioning correctly at the displayed speed (RPM). | 
| absent | Fan is not present. | 
| below minimum | Fan is present but rotating too slowly or stopped. | 
| above maximum | Fan is rotating too quickly. | 
| unknown | Unknown fan unit installed. | 
| faulty | Fan has exceeded hardware tolerance and has stopped. In this case, the last known fan speed is displayed. | 
| Airflow direction | Port side intake or Port side exhaust. This value is not applicable to modular chassis. | 
| speed | Fan RPM. | 
The following example displays fan status information:
device# show environment fan Fan 1 is Ok, speed is 4243 RPM Fan 2 is Ok, speed is 4249 RPM Fan 3 is Ok, speed is 4402 RPM