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Cooling and Airflow Requirements

The cooling system in a QFX10008 chassis consists of dual fan trays and dual fan tray controllers. There is no air filter in a QFX10008.

The air intake to cool the chassis is located on the port (line card) side of the chassis. Air flows into the chassis from the ports in the control boards and line cards, through the switch interface boards (SIBs), and exits from the fan trays and the power supplies. This airflow is called port-to-FRU cooling or airflow out (AFO). See Figure 2.

Figure 2: Airflow Through a QFX10008

Airflow Through a QFX10008

Follow these guidelines:

  • For the cooling system to function properly, the airflow around the chassis must be unrestricted.
  • If you are mounting a QFX10008 in a rack with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.
  • Leave at least 24 in. (61 cm) both in front of and behind the QFX10008 for service personnel to remove and install hardware components. To be NEBS GR-63 compliant, allow at least 30 in. (76.2 cm) in front of the rack and 24 in. (61 cm) behind the rack.

Modified: 2016-02-08