Juniper QFX Series User Manual

The air intake to cool the front card cage and powerhouse is located below the front
fan tray on the chassis. Hot air exhausts from the powerhouse at the bottom of the
chassis, and above the rear fan tray at the top of the chassis.
Figure 49: Airflow Through the Front Card Cage and Powerhouse
g050103
Front
Side view
Rear
The air intake to cool the rear card cage is located on the front sides of the chassis.
Cool air is pulled in through the side fan trays. Hot air exhausts from the Control Boards
and rear cards.
Figure 50: Airflow Through the Rear Card Cage
Top view
Front
Rear
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•
If you are mounting the device on a rack or cabinet along 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 switch. Allow at least 6 in.
(15.2 cm) of clearance on each side of the chassis. Leave adequate space at the front
of the switch for service personnel to remove and install hardware components. NEBS
101Copyright © 2012, Juniper Networks, Inc.
Chapter 6: Rack and Cabinet Requirements

Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)