Juniper QFX Series User Manual

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Power switch
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Power supplies
Figure 11 on page 27 shows the rear panel of a QFX3100 Director device with dual AC
power supplies.
Figure 11: QFX3100 Director Device Rear Panel View
Fan modules
g050053
AC power suppliesPower switch
Serial number
ID label
Related
Documentation
Front Panel of a QFX3100 Director Device on page 26•
• Cooling System and Airflow in a QFX3100 Director Device on page 27
• AC Power Supply in a QFX3100 Director Device on page 30
• Installingand Removing QFX3100 Director DeviceHardwareComponents on page 309
Cooling System and Airflow in a QFX3100 Director Device
The cooling system in a QFX3100 Director device consists of three fan modules as well
as a single fan in each AC power supply. The fan modules are located in the fan module
slots on the rear of the QFX3100 Director device.
The QFX3100 Director device provides front to back airflow. See Figure 12 on page 28.
27Copyright © 2012, Juniper Networks, Inc.
Chapter 2: QFX3100 Overview

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)