Juniper QFX5120 Series Hardware Guide

Table of Contents
About the Documentation | xi
Documentation and Release Notes | xi
Using the Examples in This Manual | xi
Merging a Full Example | xii
Merging a Snippet | xiii
Documentation Conventions | xiii
Documentation Feedback | xvi
Requesting Technical Support | xvi
Self-Help Online Tools and Resources | xvii
Creating a Service Request with JTAC | xvii
Overview
1
QFX5120 System Overview | 21
QFX5120 Switches Hardware Overview | 21
Benefits of the QFX5120 Switch | 22
QFX5120 Hardware | 22
System Software | 27
QFX5120 Power System | 27
QFX5120 Switch Models | 28
Identifying QFX5120 Switch Models | 30
Chassis Physical Specifications for QFX5120 Switches | 31
Field-Replaceable Units in QFX5120 Switches | 32
QFX5120 Chassis | 32
QFX5120 Cooling System | 33
QFX5120 Models with Front-to-Back Airflow | 33
QFX5120 Models with Back-to-Front Airflow | 34
Positioning the Switch | 36
iii

Juniper QFX5120 Series Specifications

General

Rack Units	1 U
Junos OS	Yes
Form Factor	Fixed
Power Supply	Dual, hot-swappable
Cooling	Front-to-back or back-to-front airflow
Fans	Hot-swappable
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-40°F to 158°F (-40°C to 70°C)
Humidity	5% to 90% non-condensing
AC Power Input	100 to 240 VAC
Management Ports	1x RJ-45 console, 1x USB, 1x RJ-45 management