User guide

Chassis and Power Supplies Mounting the Switch
OmniSwitch 6900 Hardware Users Guide December 2013 page 2-17
Front-to-Rear Airflow
The OmniSwitch 6900 fan tray and power supplies are located at the rear of the switch and draw air
through the intake vents located at the top-front of the chassis. The air is directed straight through the
chassis’ module compartment and past the switch’s circuit boards. Airflow is then exhausted through
their vents.
Chassis Airflow - Front to Rear
Rear-to-Front Airflow
The OmniSwitch 6900 fan tray and power supplies are located at the rear of the switch and draw air
through their vents located at the rear of the chassis. The air is directed straight through the chassis’
module compartment and past the switch’s circuit boards. Airflow is then exhausted through the air vents
on the top-front of the chassis.
Chassis Airflow - Rear-to-Front
Airflow Mismatch
If an airflow mismatch is detected the following will occur:
1. If detected at bootup: LEDs flash amber (see “Chassis Status LEDs” on page 2-10), warnings displayed,
switch continuously reboots until corrected.
2. If detected after bootup: LEDs flash amber (see “Chassis Status LEDs” on page 2-10, warnings
displayed, switch will reboot when it reaches temperature danger threshold (see “OmniSwitch 6900
Chassis” on page 2-2).