Juniper QFX3600 Hardware Documentation

QFX3600 Device Hardware Documentation
Modified: 2017-10-05
Copyright © 2017, Juniper Networks, Inc.
Juniper Networks, Inc. 1133 Innovation Way Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net
Copyright © 2017 Juniper Networks, Inc. All rights reserved.
Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered trademarks of Juniper Networks, Inc. and/or its affiliates in the United States and other countries. All other trademarks may be property of their respective owners.
Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify, transfer, or otherwise revise this publication without notice.
QFX3600 Device Hardware Documentation
Copyright © 2017 Juniper Networks, Inc. All rights reserved.
The information in this document is current as of the date on the title page.
YEAR 2000 NOTICE
Juniper Networks hardware and software products are Year 2000 compliant. Junos OShas no known time-related limitations through the year 2038. However, the NTP application is known to have some difficulty in the year 2036.
END USER LICENSE AGREEMENT
The Juniper Networks product that is the subject of this technical documentation consists of (or is intended for use with) Juniper Networks software. Use of such software is subject tothe terms and conditions of the End User License Agreement (“EULA”) posted at
http://www.juniper.net/support/eula/. By downloading, installing or using such software, you agree to the terms and conditions of that
EULA.
Copyright © 2017, Juniper Networks, Inc.ii

Table of Contents

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Supported Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Part 1 Overview
Chapter 1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
QFX3600 Device Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Understanding Redundancy of QFX3600 and QFX3600-I Components and
Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Understanding QFX Series Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
QFX Virtual Chassis Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
QFX5110 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
QFX5100 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
QFX3500 and QFX3600 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . 9
EX4300 Switches in a QFX Series Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . 9
Understanding QFX Series Virtual Chassis Components . . . . . . . . . . . . . . . . . . . . 10
Virtual Chassis Ports (VCPs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maximum Switch Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Master Routing Engine Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Backup Routing Engine Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Linecard Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Member Switch and Member ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mastership Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chassis Physical Specifications for QFX3600 and QFX3600-I Devices . . . . . . . . 17
Field-Replaceable Units for QFX3600 and QFX3600-I Devices . . . . . . . . . . . . . . 18
Front Panel of a QFX3600 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Rear Panel of QFX3600 and QFX3600-I Devices . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Access Port and Uplink Port LEDs on a QFX3600 or QFX3600-I Device . . . . . . . . 21
Chassis Status LEDs in the QFX3600 and QFX3600-I Device . . . . . . . . . . . . . . . 23
Management Port LEDs in the QFX3600 and QFX3600-I Device . . . . . . . . . . . . . 24
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QFX3600 Device HardwareDocumentation
Chapter 3 Cooling System and Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cooling System and Airflow for QFX3600 and QFX3600-I Devices . . . . . . . . . . . 27
Fan Tray LED on a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . . . . . . . . . 30
Chapter 4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . . . . 33
DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . . . . 35
AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . 37
DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device . . . . . . 38
Part 2 Site Planning, Preparation, and Specifications
Chapter 5 Preparation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Site Preparation Checklist for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . 43
Environmental Requirements and Specifications for QFX3600 and QFX3600-I
General Site Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Rack Requirements for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . . . 46
Cabinet Requirements for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . 48
Clearance Requirementsfor Airflow and Hardware Maintenancefor a QFX3600
Chapter 6 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
AC Power Specifications for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . 51
AC Power Cord Specifications for a QFX Series Device . . . . . . . . . . . . . . . . . . . . . 52
DC Power Specifications for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . 53
Grounding Cable and Lug Specifications for QFX3600 and QFX3600-I
Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Determining Interface Support for the QFX3600 Device . . . . . . . . . . . . . . . . . . . . 55
Cable Specifications for QSFP+ and QSFP28 Transceivers . . . . . . . . . . . . . . . . . . 56
Cable Specifications for Console and Management Connections for the QFX
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and
Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device . . . . . . . 61
Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device . . . . . . . 61
Chapter 8 Pinout Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
USB Port Specifications for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Console Port Connector Pinouts for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . 66
RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . 67
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
or QFX3600-I Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Dispersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables . . . . . . . . . . 59
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 60
Copyright © 2017, Juniper Networks, Inc.iv
Table of Contents
Part 3 Initial Installation and Configuration
Chapter 9 Unpacking and Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Installing and Connecting a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . . 71
Unpacking a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or
Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or
Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Chapter 10 Connecting the QFX3600 Device to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Connecting Earth Ground to QFX3600 or QFX3600-I Devices . . . . . . . . . . . . . . . 82
Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . 83
Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device . . . . . . . . 86
Chapter 11 Connecting the Device to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Connecting a Device to a Network for Out-of-Band Management . . . . . . . . . . . . 91
Connecting a Device to a Management Console by Using an RJ-45
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Connecting QFX Series and EX Series Switches in a QFX Virtual Chassis . . . . . . . 93
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Valid Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Cabling QFX3500 Switches in a QFX5100 Virtual Chassis . . . . . . . . . . . . . . . 95
Cabling QFX3600 Switches in a QFX Virtual Chassis . . . . . . . . . . . . . . . . . . . 97
Cabling a Mixed QFX Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Connecting a QFX3500 or QFX3600 Switch in a QFX5100 Virtual Chassis
Fabric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Chapter 12 Performing Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Configuring a QFX3600 Device as a Standalone Switch . . . . . . . . . . . . . . . . . . . 103
Adding a New Switch to an Existing QFX Series Virtual Chassis (CLI
Procedure) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Configuring a QFX Series Virtual Chassis (CLI Procedure) . . . . . . . . . . . . . . . . . . 107
Understanding the Licensing Requirements for a QFX Series Virtual
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
ConfiguringaQFX SeriesVirtual Chassiswitha Preprovisioned Configuration
File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Configuringa QFX Series Virtual Chassis with a Nonprovisioned Configuration
File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Part 4 Installing, Maintaining, and Replacing Components
Chapter 13 Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Installing and Removing QFX3600 or QFX3600-I Device Hardware
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Installing a Fan Tray in a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . . . . 118
Removing a Fan Tray from a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . 119
Installing a Power Supply in a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . 120
Removing a Power Supply from a QFX3600 or QFX3600-I Device . . . . . . . . . . . 122
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QFX3600 Device Hardware Documentation
Chapter 14 Replacing Transceivers and Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . 125
Installing a Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Removing a Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Connecting a Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Disconnecting a Fiber-Optic Cable from a Device . . . . . . . . . . . . . . . . . . . . . . . . . 131
Maintaining Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Configuring the Port Type on QFX3600 Standalone Switches . . . . . . . . . . . . . . . 133
Chapter 15 Removing the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Powering Off a QFX3600 Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Adding or Replacing an Interconnect Device in a QFX3000-M QFabric
Adding or Replacing a Node Device in a QFabric Node Group . . . . . . . . . . . . . . . 142
Removing a QFX3600 or QFX3600-I Device from a Rack or Cabinet . . . . . . . . . 147
Chapter 16 Contacting Customer Support and Returning the Chassis or
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Returning a QFX3600 or QFX3600-I Device or Component for Repair or
Locating the Serial Number on a QFX3600 or QFX3600-I Device or
Packing a QFX3600 or QFX3600-I Device or Component for Shipping . . . . . . . . 151
Contacting Customer Support to Obtain a Return Materials Authorization for a
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Powering Off an Interconnect Device on a QFX3000-M QFabric System . . 138
Adding a New Interconnect Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Powering Off an Existing QFabric Node Device . . . . . . . . . . . . . . . . . . . . . . . 143
Adding a New Node Device to a Node Group in a QFabric System . . . . . . . . 145
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Listing the Chassis and Component Details Using the CLI . . . . . . . . . . . . . . 150
Locating the Chassis Serial Number ID Label on a QFX3600 or QFX3600-I
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Locating the Serial Number ID Labels on FRU Components . . . . . . . . . . . . . 151
Packing a QFX3600 or QFX3600-I Device for Shipping . . . . . . . . . . . . . . . . 152
Packing QFX3600 or QFX3600-I Device Components for Shipping . . . . . . 153
QFX Series Device or Component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Part 5 Troubleshooting
Chapter 17 Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Understanding Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Chassis Alarm Messages on a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . 158
Interface Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Chapter 18 Restoring Junos OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Creating an Emergency Boot Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Performing a Recovery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
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Table of Contents
Part 6 Safety and Compliance Information
Chapter 19 General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Definitions of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Qualified Personnel Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Warning Statement for Norway and Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Chapter 20 Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Chapter 21 Installation Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 179
Installation Instructions Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Chassis Lifting Guidelines for a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . 180
Restricted Access Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Ramp Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Rack-Mounting and Cabinet-Mounting Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 182
Grounded Equipment Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Chapter 22 Radiation and Laser Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Laser and LED Safety Guidelines and Warnings for the QFX Series . . . . . . . . . . . 190
Class 1M Laser Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Class 1M Laser Radiation Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Unterminated Fiber-Optic Cable Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Chapter 23 Maintenance and Operational Safety Warnings . . . . . . . . . . . . . . . . . . . . . . 193
Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . . . . . . 193
Battery Handling Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Jewelry Removal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Lightning Activity Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Operating Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Product Disposal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Chapter 24 Power and Electrical Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . 199
Prevention of Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Action to Take After an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
AC Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
DC Power Electrical Safety Guidelines for Switches . . . . . . . . . . . . . . . . . . . . . . 204
DC Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
DC Power Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . 208
DC Power Wiring Sequence Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . 212
TN Power Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
viiCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Chapter 25 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Agency Approvals for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Compliance Statements for EMC Requirements for the QFX Series . . . . . . . . . . 216
Statements of Volatility for Juniper Network Devices . . . . . . . . . . . . . . . . . . . . . . 219
Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
European Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Israel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Korea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Nonregulatory Environmental Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Copyright © 2017, Juniper Networks, Inc.viii

List of Figures

Part 1 Overview
Chapter 1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 1: QFX3600 Chassis Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2: QFX3600 Chassis Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 3: QFX3600 Device Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 4: QFX3600 and QFX3600-I Device Rear Panel . . . . . . . . . . . . . . . . . . . . . 21
Figure 5: LEDs on the QSFP+ Access and Uplink Ports . . . . . . . . . . . . . . . . . . . . . . 22
Figure 6: Chassis Status LEDs in the QFX3600 and QFX3600-I Device . . . . . . . . 23
Figure 7: LEDs on the Management Ports on a QFX3600 or QFX3600-I
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Chapter 3 Cooling System and Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 8: Fan Tray for QFX3600 and QFX3600-I Devices . . . . . . . . . . . . . . . . . . . 27
Figure9: FRU-Side-to-Port-SideAirflow Through the QFX3600 and QFX3600-I
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 10: Port-to-FRU Airflow Through the QFX3600 and QFX3600-I
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 11: Label Identifying Airflow Direction on Power Supply Handle . . . . . . . . . 29
Figure 12: Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Chapter 4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 13: AC Power Supply in QFX3500, QFX3600, or QFX3600-I Devices . . . . . 33
Figure 14: An Arrow Icon and AFI Label Identifying Airflow Direction on Power
Supply Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 15: A Fan Icon Identifying Airflow Direction on Power Supply Handle . . . . . 34
Figure 16: DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device . . . 35
Figure 17: DC Power Supply Faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 18: Label Identifying Airflow Direction on Power Supply Handle . . . . . . . . . 37
Figure 19: AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 20: DC Power Supply Faceplateon a QFX3500, QFX3600, or QFX3600-I
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Part 2 Site Planning, Preparation, and Specifications
Chapter 5 Preparation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 21: Clearance Requirements for Airflow and Hardware Maintenance for
a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
ixCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Part 3 Initial Installation and Configuration
Chapter 9 Unpacking and Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 22: Mounting the Device on Two Posts in a Rack . . . . . . . . . . . . . . . . . . . . . 75
Figure 23: Attaching the Installation Blades to the Rear of the Rack . . . . . . . . . . . 77
Figure 24: Mounting the Device on Four Posts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Chapter 10 Connecting the QFX3600 Device to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 25: Connecting a Grounding Cable to a QFX3600 or QFX3600-I
Figure 26: Connecting an AC Power Cord to an AC Power Supply in a QFX3500
Figure 27: Connecting an AC Power Cord to an AC Power Supply in a QFX3600
Figure 28: DC Power Supply Faceplate for a QFX3500, QFX3600 or QFX3600-I
Figure 29: Securing Ring Lugs to the Terminals on the QFX3500, QFX3600 or
Chapter 11 Connecting the Device to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure 30: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure 31: Connecting a Device to a Network for Out-of-Band Management . . . . 92
Figure 32: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 33: Connecting a Device to a Management Console Through a Console
Figure 34: Connecting a Device Directly to a Management Console . . . . . . . . . . . 93
Figure 35: QFX3500 Using the 40G Ports as the VCPs . . . . . . . . . . . . . . . . . . . . . 96
Figure 36: QFX3500 Using the 10G Ports as the VCPs . . . . . . . . . . . . . . . . . . . . . . 97
Figure 37: QFX3600 Using the 40G Ports as the VCPs . . . . . . . . . . . . . . . . . . . . . 98
Figure 38: QFX3500 and QFX3600 Mixed Using the 40G Ports as the VCPs . . . 98 Figure 39: QFX3500 and QFX3600 Mixed Using Both 40G Ports and 10G Ports
Figure 40: QFX5100 Master Connecting QFX3600 and QFX3500 Using 40G
Figure 41: Mixed Mode QFX5100 VCF with QFX3500 and QFX3600 Leaf
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
or QFX3600-I Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
QFX3600-I DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
as the VCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Ports as VCPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Part 4 Installing, Maintaining, and Replacing Components
Chapter 13 Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Figure 42: Installing a Fan Tray in a QFX3600 or QFX3600-I Device . . . . . . . . . . 119
Figure 43: Removing a Fan Tray from a QFX3600 or QFX3600-I Device . . . . . . . 120
Figure 44: Installing a Power Supply in a QFX3600 or QFX3600-I Device . . . . . . 121
Figure 45: Removing a Power Supply from a QFX3600 or QFX3600-I Device . . 123
Chapter 14 Replacing Transceivers and Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . 125
Figure 46: Installing a Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Figure 47: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver . . . . . . . . . . . . 129
Figure 48: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed
in a Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Copyright © 2017, Juniper Networks, Inc.x
List of Figures
Chapter 16 Contacting Customer Support and Returning the Chassis or
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Figure 49: Location of the Serial Number ID Label on a QFX3600 or QFX3600-I
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Part 6 Safety and Compliance Information
Chapter 24 Power and Electrical Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Figure 50: Placing a Component into an Antistatic Bag . . . . . . . . . . . . . . . . . . . . 201
xiCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.xii

List of Tables

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Table 1: Notice Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Part 1 Overview
Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 3: Chassis Physical Specifications for QFX3600 and QFX3600-I
Table 4: Field-Replaceable Units for QFX3600 and QFX3600-I Devices . . . . . . . 18
Table 5: Access Port LEDs on QSFP+ Ports on a QFX3600 Device . . . . . . . . . . . . 22
Table 6: Uplink Port LEDs on a QFX3600 or QFX3600-I Device . . . . . . . . . . . . . . 22
Table 7: Chassis Status LEDs in the QFX3600 and QFX3600-I Device . . . . . . . . . 23
Table 8: Management Port LEDs in a QFX3600 or QFX3600-I Device . . . . . . . . . 25
Chapter 3 Cooling System and Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 9: Airflow Direction in QFX3600 and QFX3600-I Device Models . . . . . . . . 28
Table 10: Airflow Direction in QFX3600 and QFX3600-I SKUs . . . . . . . . . . . . . . . 30
Table 11: Fan Tray LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Chapter 4 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 12: Airfow Direction in QFX3500, QFX3600, or QFX3600-I AC Power
Table 13: Airflow Direction in QFX3500, QFX3600, and QFX3600-I Device DC
Table 14: AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I
Table 15: DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Part 2 Site Planning, Preparation, and Specifications
Chapter 5 Preparation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 16: Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 17: QFX3600 and QFX3600-I Device Environmental Tolerances . . . . . . . . 45
Table 18: Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 19: Rack Requirements for a QFX3600 or QFX3600-I Device . . . . . . . . . . . 47
Table 20: Cabinet Requirements for a QFX3600 or QFX3600-I Device . . . . . . . . 48
Chapter 6 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 21: AC Power Specifications for a QFX3600 or QFX3600-I Device . . . . . . . 51
Table 22: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
xiiiCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Table 23: DC Power Specifications for a QFX3600 or QFX3600-I Device . . . . . . 53
Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 24: QSFP+ and QSFP28 Optical Module Receptacle Pinouts . . . . . . . . . . . 57
Table 25: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts . . . . . . . . . . . . . . . . . 57
Table 26: Cable Specifications for Console and Management Connections for
Table 27: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . . 62
Chapter 8 Pinout Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Table 28: Console Port Connector Pinouts for the QFX Series . . . . . . . . . . . . . . . 66
Table 29: RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . 67
Part 3 Initial Installation and Configuration
Chapter 9 Unpacking and Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Table 30: Accessory Kit Part Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Part 5 Troubleshooting
the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Chapter 17 Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Table 31: Alarm Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Table 32: QFX3600 and QFX3600-I Chassis Alarm Messages . . . . . . . . . . . . . . 159
Copyright © 2017, Juniper Networks, Inc.xiv

About the Documentation

Documentation and Release Notes on page xv
Supported Platforms on page xv
Documentation Conventions on page xv
Documentation Feedback on page xvii
Requesting Technical Support on page xviii

Documentation and Release Notes

To obtain the most current version of all Juniper Networks®technical documentation, see the product documentation page on the Juniper Networks website at
http://www.juniper.net/techpubs/.
If the information in the latest release notes differs from the information in the documentation, follow the product Release Notes.
Juniper Networks Books publishes books by Juniper Networks engineers and subject matter experts. These books go beyond the technical documentation to explore the nuances of network architecture, deployment, and administration. The current list can be viewed at http://www.juniper.net/books.

Supported Platforms

For the features described in this document, the following platforms are supported:
QFabric System
QFX Series

Documentation Conventions

Table 1 on page xvi defines notice icons used in this guide.
xvCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Table 1: Notice Icons
DescriptionMeaningIcon
Indicates important features or instructions.Informational note
Indicates a situation that might result in loss of data or hardware damage.Caution
Alerts you to the risk of personal injury or death.Warning
Alerts you to the risk of personal injury from a laser.Laser warning
Indicates helpful information.Tip
Table 2 on page xvi defines the text and syntax conventions used in this guide.
Table 2: Text and Syntax Conventions
Represents text that you type.Bold text like this
Fixed-width text like this
Italic text like this
Italic text like this
Represents output that appears on the terminal screen.
Introduces or emphasizes important new terms.
Identifies guide names.
Identifies RFC and Internet draft titles.
Represents variables (options for which you substitute a value) in commands or configuration statements.
Alerts you to a recommended use or implementation.Best practice
ExamplesDescriptionConvention
To enter configuration mode, type the configure command:
user@host> configure
user@host> show chassis alarms
No alarms currently active
A policy term is a named structure that defines match conditions and actions.
Junos OS CLI User Guide
RFC 1997, BGP Communities Attribute
Configure the machine’s domain name:
[edit] root@# set system domain-name
domain-name
Copyright © 2017, Juniper Networks, Inc.xvi
Table 2: Text and Syntax Conventions (continued)
Text like this
Represents names of configuration statements, commands, files, and directories;configurationhierarchylevels; or labels on routing platform components.
About the Documentation
ExamplesDescriptionConvention
To configure a stub area, include the
stub statement at the [edit protocols ospf area area-id] hierarchy level.
The console port is labeled CONSOLE.
stub <default-metric metric>;Encloses optional keywords or variables.< > (angle brackets)
| (pipe symbol)
# (pound sign)
[ ] (square brackets)
Indention and braces ( { } )
; (semicolon)
GUI Conventions
Bold text like this
Indicatesa choice between the mutually exclusivekeywordsor variables on either side of the symbol. The set of choices is often enclosed in parentheses for clarity.
same line as the configurationstatement to which it applies.
Encloses a variable for which you can substitute one or more values.
Identifies a level in the configuration hierarchy.
Identifies a leaf statement at a configuration hierarchy level.
Representsgraphicaluser interface (GUI) items you click or select.
broadcast | multicast
(string1 | string2 | string3)
rsvp { # Required for dynamic MPLS onlyIndicates a comment specified on the
community name members [ community-ids ]
[edit] routing-options {
static {
route default {
nexthop address; retain;
}
}
}
In the Logical Interfaces box, select
All Interfaces.
To cancel the configuration, click
Cancel.
> (bold right angle bracket)

Documentation Feedback

We encourage you to provide feedback, comments, and suggestions so that we can improve the documentation. You can provide feedback by using either of the following methods:
Online feedback rating system—On any page of the Juniper Networks TechLibrary site at http://www.juniper.net/techpubs/index.html,simply click the stars to ratethe content, and use the pop-up form to provide us with information about your experience. Alternately, you can use the online feedback form at
http://www.juniper.net/techpubs/feedback/.
Separates levels in a hierarchy of menu selections.
In the configuration editor hierarchy, select Protocols>Ospf.
xviiCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
E-mail—Sendyourcomments to techpubs-comments@juniper.net.Include the document or topic name, URL or page number, and software version (if applicable).

Requesting Technical Support

Technical product support is availablethrough the Juniper NetworksTechnical Assistance Center (JTAC). If you are a customer with an active J-Care or Partner Support Service support contract, or are covered under warranty, and need post-sales technical support, you can access our tools and resources online or open a case with JTAC.
JTAC policies—For a complete understanding of our JTAC procedures and policies, review the JTAC User Guide located at
http://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.
Product warranties—For product warranty information, visit
http://www.juniper.net/support/warranty/.
JTAC hours of operation—The JTAC centers have resources available 24 hours a day, 7 days a week, 365 days a year.

Self-Help Online Tools and Resources

For quick and easy problem resolution, Juniper Networks has designed an online self-service portal called the Customer Support Center (CSC) that provides you with the following features:
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Search for known bugs: https://prsearch.juniper.net/
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Opening a Case with JTAC

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Use the Case Management tool in the CSC at http://www.juniper.net/cm/.
Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).
Copyright © 2017, Juniper Networks, Inc.xviii
About the Documentation
For international or direct-dial options in countries without toll-free numbers, see
http://www.juniper.net/support/requesting-support.html.
xixCopyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.xx
PART 1
Overview
System Overview on page 3
Chassis Components and Descriptions on page 17
Cooling System and Airflow on page 27
Power Supplies on page 33
1Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.2
CHAPTER 1
System Overview
QFX3600 Device Overview on page 3
Understanding Redundancy of QFX3600 and QFX3600-I Components and Functionality on page 6
Understanding QFX Series Virtual Chassis on page 6
Understanding QFX Series Virtual Chassis Components on page 10

QFX3600 Device Overview

The Juniper Networks QFX3600 device is a high-speed, multipurpose switch especially designed for next-generation data centers. The QFX3600 device can be configured as:
A standalone switch
A Node device in a QFX3000-M or QFX3000-G QFabric system
An Interconnect device in a QFX3000-M QFabric system
A member in a QFX Virtual Chassis
A leaf node in a QFX5100 Virtual Chassis Fabric (VCF)
Sixteen40-Gbps ports in the device use quad small form-factorpluggable plus (QSFP+) transceivers. The small form-factor and front facing ports in the switch make it suitable fordeployment in high-density serverracks and container-baseddata center deployments.
In a QFX3000-G QFabric system, the QFX3600 device can operate as a Node device through the 40-Gbps uplinks ports to a Juniper Networks QFX3008-I Interconnectdevice. On a QFX3000-M QFabric device, the QFX3600 can be configured to operate as either a Node device or as a QFX3600-I Interconnectdevice. When configured as a Node device in a QFX3000-M QFabric system, , the QFX3600 device can connect to either a QFX3600-I Interconnect device to a QFX5100-24Q through the 40-Gbps uplink ports.Together, the QFX3600 Node devices and Interconnect devices form a multistage, nonblocking switch fabric that provides a high-performance, low-latency, unified interconnect solution for next-generation data centers.
The QFX3600 Node devices and QFX3008-I or QFX3600-I Interconnect devices are connected to Juniper Networks QFX3100 Director devices in a control plane and managementnetwork. The QFX3100 Director device presents the QFabric system devices
3Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
as a single network entity, allowing for simplified management of your data center using the Junos OS command-line interface (CLI).
In a QFX Virtual Chassis, the QFX3600 device can participatewith other QFX3600 devices or QFX3500 devices in a ring topology with up to 10 members.
In a QFX5100 Virtual Chassis Fabric, the QFX3600 device can participate as a leafdevice. Up to a total of 32 devices can participate in the Virtual Chassis Fabric.
Software on page 4
Hardware on page 4
Software
QFX Series devices use the Junos operating system (OS), which provides Layer 2 and Layer 3 switching, routing, and security services. Junos OS is installed on the QFX3600 device’s 8-gigabyte (GB) internal flash drive. The same Junos OS code base that runs on QFX Series devices also runs on all Juniper Networks EX Series, J Series, M Series, MX Series, and T Series devices.
Hardware
For more information about which features are supported on QFX Series devices, see
Feature Explorer.
When the QFX3600 device is operating as a standalone switch, you manage the switch using the Junos OS command-line interface (CLI), accessible through the console and out-of-band management ports on the device.
When a QFX Series device operates as part of a QFabric system, all the devices in the data center fabric are managed through the Administrator software installed on the QFX3100 Director devices. Each device in a QFabric system is interconnected in a single control plane and management network, using the redundant management ports on each device.
The compact QFX3600 chassis is 1 rack unit (1 U) in size and designed to fit in industry-standard 19-inch rack-mount enclosures, as well as high-density server racks and container-based data center deployments. See Figure 1 on page 5 and
Figure 2 on page 5 and “Chassis Physical Specifications for QFX3600 and QFX3600-I Devices” on page 17.
Copyright © 2017, Juniper Networks, Inc.4
Figure 1: QFX3600 Chassis Front
g050200
3
4
5
6
2
1
2
1
g050201
AC
!
DC
1
1
2
Chapter 1: System Overview
LCD panel
QSFP+ ports
4—1—
C0S 1-Gbps SFP management port
5—2—
C0 1000BASE-T RJ-45 management port
6—3—
C1 1000BASE-T RJ-45 management portC1S 1-Gbps SFP management port
Figure 2: QFX3600 Chassis Rear
2—1— Fan traysPower supplies
The front panel of the QFX3600 chassis has an LCD panel that displays the device hostname and the number of active alarms. It also has sixteen 40-Gbps ports labeled
Q0 through Q15 thatsupport quad small form-factorpluggableplus (QSFP+) transceivers.
See “Front Panel of a QFX3600 Device” on page 19.
If you are using the QFX3600 device as a Node device in a QFabric system, by default, four ports (labeled Q0 through C3) are configured for uplink connections between your QFX3600 Node device and your Interconnect device, and twelve ports (labeled Q4 through Q15) support 48 10-Gigabit Ethernet or 12 40-Gigabit Ethernet interfaces for connectionsto either endpoint systems(such as servers and storagedevices)or external networks.Optionally,you can choose to configure the first eight ports (labeled Q0 through
Q7) for uplink connections between your QFX3600 Node device and your Interconnect
device and ports Q2 through Q15 for 10-Gigabit Ethernet or 40-Gigabit Ethernet connections to either endpoint systems or external networks. See Configuring the Port Type on QFX3600 Node Devices and “Determining Interface Support for the QFX3600
Device” on page 55.
If you are using the QFX3600 device as a standalone switch, by default, all 16 QSFP+ ports (Q0 through Q15) are configured as 40-Gigabit Ethernet (xle) ports. Optionally, you can choose to configure each port to operate as 10-Gigabit Ethernet (xe) ports. Port
00 is unique because the number of ports you can specify as 10-Gigabit Ethernet varies
by Junos OS release. In some Junos OS releases, port 00 has a reserved port and in other
5Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
releases, the port is available. See the topics on channelizing interfaces or configuring the port type for your specific software release.
The rear panel of the QFX3600 chassis has two redundant power supplies and three redundant fan trays that are field-replaceable and hot-swappable. See “Rear Panel of
QFX3600 and QFX3600-I Devices” on page 21.
Related
Documentation
Field-Replaceable Units for QFX3600 and QFX3600-I Devices on page 18
Site Preparation Checklist for a QFX3600 or QFX3600-I Device on page 43
Installing and Removing QFX3600 or QFX3600-I Device Hardware Components on
page 117

Understanding Redundancy of QFX3600 and QFX3600-I Components and Functionality

The following hardware components provide redundancy on QFX3600 and QFX3600-I devices:
Power supplies—QFX3600 and QFX3600-I devices have two power supplies. Each power supply provides power to all components in the device. The two power supplies provide full power redundancy to the device. If one power supply fails or is removed, the second power supply balances the electrical load without interruption.
To provide power redundancy to the system both power supplies must be installed. Connect power source feed A to one power supply and power source feed B to the second power supply.
CAUTION: Do not connect feed A and feed B to the same power supply
input terminal.
Cooling system—QFX3600and QFX3600-I devices havethree fan trays.If a fan module on a fan tray fails and is unable to keep the QFX3600 device within the desired temperature thresholds, chassis alarms occur and the device may shut down.
Related
Documentation
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35
Cooling System and Airflow for QFX3600 and QFX3600-I Devices on page 27

Understanding QFX Series Virtual Chassis

This topic discusses QFX Series Virtual Chassis. A QFX Series Virtual Chassis is a supported combination of interconnected QFX3500, QFX3600, QFX5100, QFX5110, and EX4300 switches operating as one logical device and managed as a single chassis. Switches in a Virtual Chassis are called members of the Virtual Chassis.
Copyright © 2017, Juniper Networks, Inc.6
This topic does not discuss Virtual Chassis Fabric (VCF). For informationon understanding VCF, see Virtual Chassis Fabric Overview.
This topic includes:
QFX Virtual Chassis Overview on page 7
QFX5110 Switches in a Virtual Chassis on page 8
QFX5100 Switches in a Virtual Chassis on page 8
QFX3500 and QFX3600 Switches in a Virtual Chassis on page 9
EX4300 Switches in a QFX Series Virtual Chassis on page 9
QFX Virtual Chassis Overview
A QFX Series Virtual Chassis is a flexible, scaling switch solution for supported combinationsof QFX3500, QFX3600,QFX5100,and QFX5110 switches. EX4300 switches can also be included in some configurations of a QFX Series Virtual Chassis..
In a QFX Series Virtual Chassis, you can interconnect up to ten standalone switches in the following combinations into one logical device, and manage the logical device as a single chassis:
Chapter 1: System Overview
QFX5110 switches or a combination of QFX5110 and QFX5100 switches (a non-mixed Virtual Chassis)
QFX5100 switches (a non-mixed Virtual Chassis)
QFX5100 switches with any combinationof QFX3500, QFX3600,or EX4300 switches (a mixed mode Virtual Chassis)
QFX3500switches or QFX3600 switches, or a combination of QFX3500 and QFX3600 switches (a non-mixed Virtual Chassis)
QFX3500 or QFX3600 switches with EX4300 switches, or a combination of all three types of switches (a mixed mode Virtual Chassis)
The advantages of connecting multiple switches into a Virtual Chassis include better-managed bandwidth at a networklayer, simplified configurationand maintenance because multiple devices can be managed as a single device, increased fault tolerance and high availability(HA) because a Virtual Chassis can remain active and network traffic can be redirected to other member switches when a single member switch fails, and a flatter, simplified Layer 2 network topology that minimizes or eliminates the need for loop prevention protocols such as Spanning Tree Protocol (STP).
You set up a Virtual Chassis by configuring Virtual Chassis ports (VCPs) on the member switches, and interconnecting the switches using the VCPs . VCPs are responsible for passing all data and control traffic between member switches in theVirtual Chassis. The following ports on QFX Series switches that support Virtual Chassis can be configured into VCPs to form a QFX Series Virtual Chassis:
Any 100-Gbps or 40-Gbps QSFP28 ports on QFX5110 switches
Any non-channelized 40-Gbps QSFP+ ports on QFX3500, QFX3600, QFX5100, or QFX5110 switches
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QFX3600 Device Hardware Documentation
Any fixed 10-Gbps SFP+ ports on QFX Series switches with these ports
See EX4300 Switches Hardware Overview for details on the ports on an EX4300 switch that can be configured into VCPs in a QFX Series Virtual Chassis.
You can increase VCP bandwidth between member switches by configuring multiple interfaces between the same two switches into VCPs. When multiple VCPs interconnect the same two member switches, a Link Aggregation Group (LAG) or bundle is automatically formed when the VCPs are on interfaces supporting identical speeds. For example, if you have two 40-Gbps QSFP+ interfaces configured as VCPs between member switches, a LAG with two member links with 80Gbps of total bandwidth is formed. However, 10-Gbps SFP+ and 40-Gbps QSFP+ interfaces configured as VCPs will not become members of the same VCP LAG.
QFX5110 Switches in a Virtual Chassis
Starting in Junos OS Release 17.3R1, Virtual Chassis is supported on QFX5110 switches.
You can interconnect up to ten QFX5110 switches or a combination of QFX5110 and QFX5100 switches intoa QFX5110 Virtual Chassis. All switches can run the same software image, and you do not need to configure mixed mode.
The following QFX5110 and QFX5100 switches are supported in a QFX5110 Virtual Chassis:
QFX5110-32Q
QFX5110-48S
QFX5100-24Q
QFX5100-48S
QFX5100-96S
QFX5100 Switches in a Virtual Chassis
Starting in Junos OS Release 13.2X51-D20, Virtual Chassis is supported on QFX5100 switches.You can interconnect up to ten switches into a QFX5100 Virtual Chassis that can include any combination of QFX5100, QFX3500, QFX3600, and EX4300 switches.
NOTE: In Junos OS release13.2X51-D20, you can interconnect only up to four
QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis. Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX Series Virtual Chassis.
The following QFX5100 switches are supported in a non-mixed QFX5100 Virtual Chassis or a mixed QFX5100 Virtual Chassis (QFX5100 switches with QFX3500, QFX3600, or EX4300 switches):
QFX5100-24Q
QFX5100-48S
Copyright © 2017, Juniper Networks, Inc.8
Chapter 1: System Overview
QFX5100-48T
QFX5100-96S
NOTE: QFX5100-24Q switches should be configured as the Routing Engine
role members in a mixed QFX5100 Virtual Chassis.
QFX5100 switches can also be part of a QFX5110 Virtual Chassis, which can include a combination of up to ten QFX5110 and QFX5100 switches. For a QFX5100 switch to participatein a QFX5110 Virtual Chassis, the switchmust have the same software version and image installed as the software running on the QFX5110 switches in the Virtual Chassis. You do not need to configure mixed mode. In a QFX5110 Virtual Chassis, we recommend to use QFX5110 switches in the master and backup Routing Engine roles, and QFX5100 switches only in the linecard role.
The following QFX5100 switches are supported in a QFX5110 Virtual Chassis:
QFX5100-24Q
QFX5100-48S
QFX5100-96S
CAUTION: A QFX5100 switch running a Junos OS software image with
“-qfx-5-” in the package filename must first be upgraded to a Junos OS software image with “-qfx-5e-” in the package filename before it can be added to a QFX5110 Virtual Chassis or VCF. See Upgrading a QFX5100 Switch with a USB Device to Join a QFX5110 Virtual Chassis or Virtual Chassis Fabric.
QFX3500 and QFX3600 Switches in a Virtual Chassis
Virtual Chassis is supported on QFX3500 and QFX3600 series switches. To be included in a Virtual Chassis, QFX3500 and QFX3600 series switches must be configured as standalone switches and not as QFX node devices in a QFabric system.
QFX3500 and QFX3600 devices must be running a version of Junos OS for QFX devices that supports Virtual Chassis,and can be in a Virtual Chassiswith up to ten total members including QFX3500 or QFX3600 switches only, or any combination of QFX3500, QFX3600, QFX5100, and EX4300 switches.
EX4300 Switches in a QFX Series Virtual Chassis
Virtual Chassis is supported on EX4300 switches. Starting in Junos OS Release
13.2X51-D20, EX4300 switches can be interconnected into a QFX Series Virtual Chassis with QFX3500 switches, QFX3600 switches, and QFX5100 switches.
A mixed or non-mixed QFX Series Virtual Chassis that includes EX4300 switches can contain up to ten total member switches including any combination of QFX3500, QFX3600, and QFX5100 switches with EX4300 switches.
9Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Release History Table DescriptionRelease
Starting in Junos OS Release 17.3R1, Virtual Chassis is supported on QFX5110 switches.
Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX Series Virtual Chassis.
Starting in Junos OS Release 13.2X51-D20, Virtual Chassis is supported on QFX5100 switches.
In Junos OS release 13.2X51-D20, you can interconnect only up to four QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis.
Starting in Junos OS Release 13.2X51-D20, EX4300 switches can be interconnected into a QFX Series Virtual Chassis with QFX3500 switches, QFX3600 switches, and QFX5100 switches.
Related
Documentation
17.3R1
13.2X53-D25
13.2X51-D20
13.2X51-D20
13.2X51-D20
Understanding QFX Series Virtual Chassis Components on page 10
Configuring a QFX Series Virtual Chassis (CLI Procedure) on page 107

Understanding QFX Series Virtual Chassis Components

This topic describes the components of a QFX Series Virtual Chassis. A QFX Series Virtual Chassis is a supported combination of up to ten standalone QFX3500, QFX3600, QFX5100,or QFX5110switches interconnectedand managedas a single chassis.(EX4300 switches can also be interconnected into a mixed Virtual Chassis with QFX3500, QFX3600, and QFX5100 switches.)
This topic does not discuss Virtual Chassis Fabric components. For informationon Virtual Chassis Fabric components, see Understanding Virtual Chassis Fabric Components.
This topic covers:
Virtual Chassis Ports (VCPs) on page 11
Maximum Switch Support on page 11
Master Routing Engine Role on page 12
Backup Routing Engine Role on page 12
Linecard Role on page 13
Member Switch and Member ID on page 14
Mastership Priority on page 14
Copyright © 2017, Juniper Networks, Inc.10
Virtual Chassis Ports (VCPs)
You set up a Virtual Chassis by configuring Virtual Chassis ports (VCPs) on the member switches, and interconnecting the switches using the VCPs. VCPs are responsible for passing all data and control traffic between member switches in the Virtual Chassis.
The following options are available for configuring VCPs on the switches in a QFX Series Virtual Chassis:
Any 100-Gbps or 40-Gbps QSFP28 ports on QFX5110 switches can be configured into VCPs.
Any non-channelized 40-Gbps QSFP+ interfaces on QFX3500, QFX3600, QFX5100, and QFX5110 switches can be configured into VCPs.
40-Gbps QSFP+ interfaces that have been channelized into SFP+ interfaces using a breakout cable cannot be configured into VCPs, but all other non-channelized SFP+ interfaces on QFX series switches can be configured into VCPs, and can also be used to interconnect EX4300 switches into a mixed QFX and EX Series Virtual Chassis.
Chapter 1: System Overview
You can increase VCP bandwidth between member switches by configuring multiple interfaces between the same two switches into VCPs. When multiple VCPs interconnect the same two member switches, a Link Aggregation Group (LAG) or bundle is automatically formed when the VCPs are on interfaces supporting identical speeds. For example, if you have two 40-Gbps QSFP+ interfaces configured as VCPs between member switches, a LAG with two member links with 80-Gbps of total bandwidth is formed. However, 10-Gigabit SFP+ and 40-Gbps QSFP+ interfaces configured as VCPs will not become members of the same LAG. See Understanding Virtual Chassis Port Link Aggregation.
Maximum Switch Support
In a QFX Series Virtual Chassis, you can interconnect up to 10 standalone switches in the following supported combinations:
QFX5110 switches or a combination of QFX5110 switches and QFX5100 switches (a non-mixed Virtual Chassis)
QFX5100 switches (a non-mixed Virtual Chassis)
QFX5100 switches with any combinationof QFX3500, QFX3600,or EX4300 switches (a mixed mode Virtual Chassis)
QFX3500 switches, or QFX3600 swtiches, or any combination of QFX3500 switches and QFX3600 switches (a non-mixed Virtual Chassis)
Any combination of QFX3500 and QFX3600 switcheswith EX4300 switches (a mixed mode Virtual Chassis)
11Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Master Routing Engine Role
In a Virtual Chassis, each member switch is assigned one of two roles: Routing Engine or linecard, and for Routing Engine role, receives a further designation as the master or backup Routing Engine.
Themember that functions as the masterin the Routing Engine role in the Virtual Chassis:
Manages the member switches.
Runs Junos OS for the switches as a master Routing Engine.
Runs the chassis management processes and control protocols.
NOTE: In Junos OS release13.2X51-D20, you can interconnect only up to four
QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis. Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX5100 Virtual Chassis.
Represents all the member switches interconnected within the Virtual Chassis configuration.(The hostname and other properties that you assign to this switch during setup apply to all members of the Virtual Chassis configuration.)
In a preprovisioned configuration, one of the two members assigned as routing-engine functions as the master member. The selection of which member assigned as
routing-engine functions as master and which as backup is determined by the software
based on the master election algorithm. See Understanding How the Master in a Virtual Chassis Is Elected.
In a configuration that is not preprovisioned, the selection of the master and backup is determined by the mastership priority value and secondary factorsin the master election algorithm.
All switches that are not assigned the master or backup Routing Engine role function in the linecard role.
In a QFX5110 Virtual Chassis with QFX5110 and QFX5100 switches, we recommend configuring only QFX5110 switches into the Routing Engine role.
In a mixed QFX Series Virtual Chassis made up of QFX5100 switches with QFX3500, QFX3600, or EX4300 switches, we recommend configuring QFX5100 switches into the Routing Engine role. If the mixed Virtual Chassis does not contain QFX5100 switches, we recommend configuring QFX3500 or QFX3600 switches into the Routing Engine role.
Backup Routing Engine Role
The member that functions in the backup Routing Engine role in a Virtual Chassis:
Maintains a stateof readiness to take over the master Routing Engine role if the master fails.
Runs Junos OS for the switches as a backup Routing Engine.
Copyright © 2017, Juniper Networks, Inc.12
Chapter 1: System Overview
Synchronizeswith the master in terms of protocol states, forwarding tables, and other information,so that it is prepared to preserve routing information and maintain network connectivity without disruption in case the master is unavailable.
You must have at least two member switches in the Virtual Chassis configuration in order to have a backup Routing Engine member.
In a preprovisioned configuration, one of the two members assigned as routing-engine functions in the backup role. The selection of which member assigned as routing-engine functions as master and which as backup is determined by the software based on the master election algorithm. See Understanding How the Master in a Virtual Chassis Is Elected.
In a configuration that is not preprovisioned, the selection of the master and backup is determined by the mastership priority value and secondary factorsin the master election algorithm.
In a QFX5110 Virtual Chassis with QFX5110 and QFX5100 switches, we recommend configuring only QFX5110 switches into the Routing Engine role.
Linecard Role
In a mixed QFX Series Virtual Chassis made up of QFX5100 switches with QFX3500, QFX3600, or EX4300 switches, we recommend configuring the QFX5100 switches into the Routing Engine role. If the mixed Virtual Chassis does not contain QFX5100 switches, we recommend configuringQFX3500 or QFX3600 switches into the Routing Engine role.
A member that functions in the linecard role in a Virtual Chassis:
Runs only a subset of Junos OS.
Does not run the chassis control protocols.
Can detect certain error conditions (such as an unplugged cable) on any interfaces that have been configured on it through the master.
The Virtual Chassis configuration must have at least three members in order to include a linecard member.
In a preprovisioned configuration, you can explicitly configure a member with the linecard role, which makes it ineligible for functioning as a master or backup Routing Engine.
In a configurationthat is not preprovisioned,the members that are not selectedas master or backup function as linecard members of the Virtual Chassis configuration.The selection of the master and backup is determined by the mastership priority value and secondary factors in the masterelection algorithm. A switch with a mastership priority of 0 is always in the linecard role.
Any switch can function in the linecard role in a mixed or non-mixed Virtual Chassis.
In a QFX5110 Virtual Chassis made up of QFX5110 and QFX5100 switches,we recommend configuring only QFX5110 switches into the Routing Engine role.
13Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
In a mixed QFX Series Virtual Chassis made up of QFX5100 switches with QFX3500, QFX3600, or EX4300 switches, we recommend configuring the QFX5100 switches into the Routing Engine role. If the mixed Virtual Chassis does not contain QFX5100 switches, we recommend configuringQFX3500 or QFX3600 switches into the Routing Engine role.
Member Switch and Member ID
Each standalone switch that supports Virtual Chassis is a potential member of a Virtual Chassis configuration. When one of those switches is powered on, it receives a member ID that can be seen by viewing the front-panel LCD or by entering the show virtual-chassis command. If the switch is powered on as a standalone switch, that member’s member ID is always0. When the switch is interconnectedwith other switches in a Virtual Chassis configuration, its member ID is assigned by the master based on various factors, such as the order in which the switch was added to the Virtual Chassis configuration or the member ID assigned by a preprovisionedconfiguration.See Understanding How the Master in a Virtual Chassis Is Elected.
If the Virtual Chassis configuration previously included a member switch and that member was physically disconnected or removed from the Virtual Chassis configuration, its member ID is not availablefor assignment as part of the standard sequential assignment by the master. For example, you might have a Virtual Chassis configuration composed of member 0, member 2, and member 3, because member 1 was removed. When you add another member switch and power it on, the master assigns it as member 4.
Mastership Priority
Themember ID distinguishes the member switches fromone another.You use the member ID:
To assign a mastership priority value to a member switch
To configure interfaces for a member switch (The function is similar to that of a slot number on Juniper Networks routers.)
To apply some operational commands to a member switch
To display status or characteristics of a member switch
In a configurationthat is not preprovisioned,youcan designate the role (master or backup RoutingEngine, or linecard) that a member switch assumes by configuring its mastership priority (from 0 through 255). The mastership priority value is the factor in the master election algorithm with the highest precedence for selecting the master of the Virtual Chassis configuration. A switch with a mastership priority of 0 never assumes the backup or master Routing Engine role.
The default value for mastership priority is 128. When a standalone switch is powered on, it receives the default mastership priority value. Because it is the only member of the Virtual Chassis configuration, it is also the master. When you interconnect a standalone switch to an existing Virtual Chassis configuration (which implicitly includes its own master), we recommend that you explicitly configure the mastership priority of the members that you want to function as the master and backup.
Copyright © 2017, Juniper Networks, Inc.14
In a preprovisioned configuration, you assign the role of each member switch.
Release History Table DescriptionRelease
Chapter 1: System Overview
Related
Documentation
13.2X53-D25
13.2X51-D20
Understanding QFX Series Virtual Chassis on page 6
Configuring a QFX Series Virtual Chassis (CLI Procedure) on page 107
Starting in Junos OS release 13.2X51-D25, you can configure up to ten QFX5100-96S switches into a mixed or non-mixed QFX5100 Virtual Chassis.
In Junos OS release 13.2X51-D20, you can interconnect only up to four QFX5100-96S switches in a non-mixed QFX5100 Virtual Chassis.
15Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.16
CHAPTER 2
Chassis Components and Descriptions
Chassis Physical Specifications for QFX3600 and QFX3600-I Devices on page 17
Field-Replaceable Units for QFX3600 and QFX3600-I Devices on page 18
Front Panel of a QFX3600 Device on page 19
Rear Panel of QFX3600 and QFX3600-I Devices on page 21
Access Port and Uplink Port LEDs on a QFX3600 or QFX3600-I Device on page 21
Chassis Status LEDs in the QFX3600 and QFX3600-I Device on page 23
Management Port LEDs in the QFX3600 and QFX3600-I Device on page 24

Chassis Physical Specifications for QFX3600 and QFX3600-I Devices

The QFX3600 and QFX3600-I chassis is a rigid sheet-metal structure that houses the hardware components. Table 3 on page 17 summarizes the physical specifications of the QFX3600 and QFX3600-I chassis.
Table 3: Chassis Physical Specifications for QFX3600 and QFX3600-I Devices
Chassis width
Chassis depth
Weight
Documentation
Related
ValueDescription
1.74 in. (4.4 cm)Chassis height
Including mounting brackets: 19.2 in. (48.8 cm)
Excluding mounting brackets: 16.9 in. (42.9 cm)
Including FRU handles and locking levers: 19.4 in. (49.3 cm)
Excluding FRU handles and locking levers: 19.3 in. (49 cm)
With FRUs installed: 20.5 lb (9.3 kg)
Without FRUs installed: 14.6 lb (6.6 kg)
AC power supply: 2.2 lb (1 kg)
DC power supply: 2.2 lb (1 kg)
Fan tray: 0.9 lb (0.4 kg)
Rack Requirements for a QFX3600 or QFX3600-I Device on page 46
Cabinet Requirements for a QFX3600 or QFX3600-I Device on page 48
17Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Installing and Connecting a QFX3600 or QFX3600-I Device on page 71
Installing and Removing QFX3600 or QFX3600-I Device Hardware Components on
page 117

Field-Replaceable Units for QFX3600 and QFX3600-I Devices

Field-replaceable units (FRUs) are components that you can replace at your site. QFX3600 and QFX3600-I device FRUs are hot-insertable and hot-removable: you can remove and replace them without powering off the device or disrupting the switching function.
CAUTION: Replace a failed power supply with a blank panel or new power
supply within 1 minute of removal to prevent chassis overheating. Replace a failed fan tray with a new fan tray within 1 minute of removal to prevent chassis overheating.
Table 4 on page 18 lists the FRUs for QFX3600 and QFX3600-I devices and actions to
take before removing them.
Table 4: Field-Replaceable Units for QFX3600 and QFX3600-I Devices
Required ActionFRU
None.Power supplies
None.Fan trays
Optical transceivers
None. We recommend that you disable the interface using the set interfaces
interface-namedisablecommand before you remove the transceiver. See Disconnecting a Fiber-Optic Cable from a QFX Series Device.
NOTE: If you have a Juniper J-Care service contract, register any addition,
change, or upgrade of hardware components at
https://www.juniper.net/customers/csc/management/updateinstallbase.jsp .
Failureto do so can resultin significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.
Related
Documentation
Installing and Removing QFX3600 or QFX3600-I Device Hardware Components on
page 117
Copyright © 2017, Juniper Networks, Inc.18

Front Panel of a QFX3600 Device

The front panel of the QFX3600 device consists of the following components:
LCD panel—The LCD panel displays the device hostname and the number of active alarms.
TIP: Alternatively, you can use the show chassis lcd CLI command to view
what is currently displayed on the LCD panel.
Chassis status LEDs
USB port
Console (CON) port
Management ports—The QFX3600 device has four management ports. The ports labeled C0 and C1 are 1000BASE-T RJ-45 ports, and the ports labeled C0S and C1S are 1-Gbps SFP ports.
Chapter 2: Chassis Components and Descriptions
If you are using the QFX3600 device as a Node device in a QFabric system, these ports are used to connect the QFX3600 device to the QFabric system control plane and management network. See Determining Transceiver Support for QFabric Systems for information about the supported transceivers and required cables.
If you are using the QFX3600 device as a standalone switch, these ports are used to connect the QFX3600 deviceto a management network.See “Cable Specifications
for Console and Management Connections for the QFX Series” on page 58 for
information about the required cables.
NOTE: When an SFP transceiver is inserted into a management port, the
correspondingRJ-45 management port (C0 or C1) is disabled. Either RJ-45 or SFP management ports can be used, but not both.
Chassis serial number label and ESD point
NOTE: The chassis serial number ID label is located on a sliding panel on
the top right of the front panel on a QFX3600 device (see
Figure 3 on page 20). To use the sliding panel as an ESD point, pull the
sliding panel partway out of the chassis, and connect a tape-style ESD grounding strap to the panel.
Access and uplink ports—The QFX3600 device has sixteen 40-Gbps ports labeled Q0 through Q15 that support quad small form-factor pluggable plus (QSFP+) transceivers.
If you are using the QFX3600 device asa Node device in a QFabric system, bydefault, four ports (labeled Q0 through Q3) are configured for uplink connections between your QFX3600 Node device and your Interconnect device, and twelve ports (labeled
19Copyright © 2017, Juniper Networks, Inc.
OK /!
QFX3600-16Q
CON
LA
ST
LA
ST
Q0
Q1
LA
ST
LA
ST
Q2
Q3
LA
ST
LA
ST
Q4
Q5
LA
ST
LA
ST
Q6
Q7
LA
ST
LA
ST
Q8
Q9
LA
ST
LA
ST
Q10
Q11
LA
ST
LA
ST
Q12
Q13
LA
ST
LA
ST
Q14
Q15
LA
ST
LA
ST
C1S
C0
C1
C0S
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QFX3600 Device Hardware Documentation
Q4 through Q15) use QSFP+ direct-attach copper (DAC) breakout cables or QSFP+
transceivers with fiber breakout cables to support 48 10-Gigabit Ethernet interfaces for connections to either endpoint systems (such as servers and storage devices) or external networks. Optionally, you can choose to configure the first eight ports (labeledQ0 through Q7) for uplinkconnections between your QFX3600 Node device and your Interconnect device and ports Q2 through Q15 for 10-Gigabit Ethernet connections to either endpoint systems or external networks. See Determining Transceiver Support for QFabric Systems.
If you are using the QFX3600 device as a standalone switch, by default, all 16 QSFP+ ports (Q0 through Q15) are configuredas 40-Gigabit Ethernet (xle)ports. Optionally, you can choose to configure each port to operate as 10-Gigabit Ethernet (xe) ports. The number of ports supported is release dependent. See “Configuring the Port Type
on QFX3600 StandaloneSwitches” on page 133 for your releasefor moreinformation
about configuring the port type. You can use QSFP+ direct-attach copper (DAC) cables, QSFP+ DAC breakout cables, or QSFP+ transceivers. You can use QSFP+ transceivers to create four 10-Gigabit Ethernet ports by using a fiber breakout cable to distribute the interfaces to four 10GBASE-SR SFP+ transceivers. (Juniper Networks does not sell fiber breakout cables, they must be purchased separately.) See
“Determining Interface Support for the QFX3600 Device” on page 55.
Related
Documentation
Access port and uplink port LEDs
Figure 3 on page 20 shows the front of a QFX3600 device.
Figure 3: QFX3600 Device Front Panel
LCD panel
Chassis status LEDs
Access and uplink ports
Chassis serial number label and ESD point
C1 management port
Field-Replaceable Units for QFX3600 and QFX3600-I Devices on page 18
Rear Panel of QFX3600 and QFX3600-I Devices on page 21
USB Port Specifications for the QFX Series on page 65
6—1—
C0 management port
7—2—
C0S management port
8—3—
C1S management port
9—4—
Console (CON) port
10—5— USB port
Chassis Status LEDs in the QFX3600 and QFX3600-I Device on page 23
Access Port and Uplink Port LEDs on a QFX3600 or QFX3600-I Device on page 21
Prevention of Electrostatic Discharge Damage on page 200
Copyright © 2017, Juniper Networks, Inc.20
Installing and Removing QFX3600 or QFX3600-I Device Hardware Components on
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page 117

Rear Panel of QFX3600 and QFX3600-I Devices

The rear panel of QFX3600 and QFX3600-I devices consists of the followingcomponents:
Fan trays
Grounding point
Power supplies
Figure 4 on page 21 shows the rear panel of a QFX3600 device.
Figure 4: QFX3600 and QFX3600-I Device Rear Panel
Chapter 2: Chassis Components and Descriptions
3—1—
Fan trays 0-2Power supply 0
4—2—
Power supply 1
Related
Documentation
Grounding point
Field-Replaceable Units for QFX3600 and QFX3600-I Devices on page 18
Front Panel of a QFX3600 Device on page 19
Cooling System and Airflow for QFX3600 and QFX3600-I Devices on page 27
Grounding Cable and Lug Specifications for QFX3600 and QFX3600-I Devices on
page 53
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35
Prevention of Electrostatic Discharge Damage on page 200
Installing and Removing QFX3600 or QFX3600-I Device Hardware Components on
page 117

Access Port and Uplink Port LEDs on a QFX3600 or QFX3600-I Device

Each access port and uplink port in a QFX3600 device has two LEDs (see
Figure 5 on page 22).
21Copyright © 2017, Juniper Networks, Inc.
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Link /Activity
LED
Status
LED
QFX3600 Device Hardware Documentation
Figure 5: LEDs on the QSFP+ Access and Uplink Ports
The LEDs labeled Link/Activity LED in Figure 5 on page 22 indicate link activity or faults. The LEDs labeled Status LED in Figure 5 on page 22 indicate link status.
Table 5 on page 22 describes the QSFP+ access port LEDs.
Table 5: Access Port LEDs on QSFP+ Ports on a QFX3600 Device
DescriptionStateColorLED
OffUnlitLink/Activity
On steadilyGreen
Blinking
No link is established, there is a fault, or the link is down.
NOTE: The LED remains unlit only if all four of the 10-Gigabit Ethernet
SFP+ breakout links are down.
A link is established, but there is no link activity.
NOTE: The LED is lit green when at least one of the four 10-Gigabit Ethernet
SFP+ breakout links is established.
A link is established, and there is link activity.
NOTE: The LED is lit green when at least one of the four 10-Gigabit Ethernet
SFP+ breakout links is established.
No transceiver is installed in the port, or the transceiver is not supported.OffUnlitStatus
A transceiver is installed in the port.On steadilyGreen
Table 6 on page 22 describes the QSFP+ uplink port LEDs.
Table 6: Uplink Port LEDs on a QFX3600 or QFX3600-I Device
DescriptionStateColorLED
No link is established, there is a fault, or the link is down.OffUnlitLink/Activity
A link is established, but there is no link activity.On steadilyGreen
A link is established, and there is link activity.Blinking
OffUnlitStatus
No transceiver is installed in the port, or the transceiver is not supported.
A transceiver is installed in the port.On steadilyGreen
Copyright © 2017, Juniper Networks, Inc.22
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Status
Fan
Power
Chapter 2: Chassis Components and Descriptions
Related
Documentation
Front Panel of a QFX3600 Device on page 19
Front Panel of a QFX3600-I Interconnect Device
Installing a Transceiver in a QFX Series Device
Connecting a Fiber-Optic Cable to a QFX Series Device

Chassis Status LEDs in the QFX3600 and QFX3600-I Device

The front panel of the QFX3600 and QFX3600-I device has three LEDs on the right side of the management board, next to the LCD panel (see Figure 6 on page 23).
Figure 6: Chassis Status LEDs in the QFX3600 and QFX3600-I Device
Table 7 on page 23 describes the chassis status LEDs in a QFX3600 and QFX3600-I
device, their colors and states, and the status they indicate. You can view the colors of the three LEDs remotelythroughthe CLI byissuing the operationalmode commandshow
chassis lcd.
Table 7: Chassis Status LEDs in the QFX3600 and QFX3600-I Device
DescriptionStateColorName
The device is powered on.On steadilyGreenPower
A temperature or voltage error has been detected, and the device has shut down. Power off the QFX3600 or QFX3600-I device following the instructions in
“PoweringOff a QFX3600 Device” on page 135. Correctany site temperature issues,
and allow the device to cool down. Power on the QFX3600 or QFX3600-I device and monitor the power supply and fan LEDs to help determine where the error is occurring. If the amber Power LED begins blinking again, power off the QFX3600 or QFX3600-I device and contact customer support. See “Contacting Customer
Support to Obtain a Return Materials Authorization for a QFX Series Device or Component” on page 153.
Junos OS has been loaded on the device.On steadilyGreenStatus
The beacon feature has been enabled on the device using the request chassis
beacon command.
BlinkingAmber
Intermittent blinking
23Copyright © 2017, Juniper Networks, Inc.
g050208
Activity
LED
Link speed
LED
QFX3600 Device Hardware Documentation
Table 7: Chassis Status LEDs in the QFX3600 and QFX3600-I Device (continued)
DescriptionStateColorName
A software error has occurred. Power off the QFX3600 or QFX3600-I device by followingthe instructions in “PoweringOff a QFX3600 Device”on page 135. Power on the QFX3600 or QFX3600-I device and monitor the management board LEDs to ensure that Junos OS boots properly.
The fan trays are operating normally.On steadilyGreenFan
An error has been detected in a fan tray installed on the rear panel of the device. Replace the fan tray as soon as possible. To maintain proper airflow through the chassis leave the fan tray installed in the chassis, until you are ready to replace it.
Related
Documentation
BlinkingAmber
BlinkingAmber
Front Panel of a QFX3600 Device on page 19
Front Panel of a QFX3600-I Interconnect Device
Rear Panel of QFX3600 and QFX3600-I Devices on page 21
Chassis Alarm Messages on a QFX3500 Device

Management Port LEDs in the QFX3600 and QFX3600-I Device

The RJ-45 management ports labeled C0 and C1 and SFP management ports labeled
C0S and C1S in a QFX3600 or QFX3600-I device have two LEDs that indicate link speed
and activity.
NOTE: On the SFP management ports, LA denotes activity, and ST denotes
speed.
Figure 7: LEDs on the Management Ports on a QFX3600 or QFX3600-I Device
Copyright © 2017, Juniper Networks, Inc.24
Chapter 2: Chassis Components and Descriptions
Table 8 on page 25 describes the management port LEDs.
Table 8: Management Port LEDs in a QFX3600 or QFX3600-I Device
DescriptionStateColorLED
The port is not active.OffUnlitLink speed
1-Gbps link is established.On steadilyGreen
Related
Documentation
On steadilyAmber
Front Panel of a QFX3600 Device on page 19
Front Panel of a QFX3600-I Interconnect Device
Connecting a QFX3600 Device to a Network for Out-of-Band Management
10/100-Mbps link is established.
NOTE: The SFP management ports (C0S and C1S) do not
support 10-Mbps or 100-Mbps speeds.
There is no activity on the link.OffUnlitActivity
There is activity on the link.FlickeringGreen
25Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.26
CHAPTER 3
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Cooling System and Airflow
Cooling System and Airflow for QFX3600 and QFX3600-I Devices on page 27
Fan Tray LED on a QFX3600 or QFX3600-I Device on page 30

Cooling System and Airflow for QFX3600 and QFX3600-I Devices

The cooling systemin QFX3600and QFX3600-I devices consistof three field-replaceable unit (FRU) fan trays with two fan modules each (see Figure 8 on page 27). In addition, the power supplies have internal fans to cool themselves.
Figure 8: Fan Tray for QFX3600 and QFX3600-I Devices
The fan tray provides FRU-to-port or port-to-FRU airflow depending on the SKU you purchase. Table 9 on page 28 lists the different QFX3600 and QFX3600-I SKUs and their direction of airflow.
NOTE: In QFX Series device model names, AFI, or airflow in, describes
FRU--to-port airflow. AFO, or airflow out, describes port-to-FRU airflow.
NOTE: The rear panel of the device where the power supplies and fan trays
are located is the FRU side of the device.
27Copyright © 2017, Juniper Networks, Inc.
g050206
FRUs
Ports
QFX3600 Device Hardware Documentation
Table 9: Airflow Direction in QFX3600 and QFX3600-I Device Models
Direction of AirflowModel
FRU-to-portQFX3600-16Q-AFI
Port-to-FRUQFX3600-16Q-AFO
FRU-to-portQFX3600-I-16Q-AFI
Port-to-FRUQFX3600-I-16Q-AFO
In QFX3600 and QFX3600-I device models that have FRU--to-port airflow,the air intake to cool the chassis is locatedon the rear panel of the chassis, where the FRUs are installed. Air is pulled into the chassis and pushed away from the fan trays. Hot air exhausts from the rear of the chassis, where the ports are located. See Figure 9 on page 28.
Figure 9: FRU-Side-to-Port-Side Airflow Through the QFX3600 and QFX3600-I Chassis
In QFX3600 and QFX3600-I device models that have port-to-FRU airflow, the air intake to cool the chassis is located on the front panel of the chassis, the side with access and uplink ports. Air is pulled into the chassis and pulled through the fan trays.Hot air exhausts from the front of the chassis, where the FRUs are installed. See Figure 10 on page 29.
Copyright © 2017, Juniper Networks, Inc.28
g050207
FRUs
Ports
Chapter 3: Cooling System and Airflow
Figure 10: Port-to-FRU Airflow Through the QFX3600 and QFX3600-I Chassis
Each airflow type requires specific power supplies and fan trays that have fan modules oriented in the proper direction. The fan trays are designed so that they can only be inserted into the device model that supports the same airflow type. The power supplies have labels and arrows on the handles that depict the direction of airflow (see
Figure11 on page29). The label AFI denotes FRU-to-port airflow.AFO denotesport-to-FRU
airflow.
CAUTION: Verify that the direction of the arrow on the power supply handle
matches the direction of airflow in the chassis. See Table 9 on page 28 to determine your model’s airflow direction.
Figure 11: Label Identifying Airflow Direction on Power Supply Handle
Table 10 on page 30 lists QFX3600 and QFX3600-I device FRUs and their direction of
airflow.
29Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Table 10: Airflow Direction in QFX3600 and QFX3600-I SKUs
Direction of AirflowPart NumberFRU
FRU-side-to-port-sideQFXC01-FANBIFan tray
Port-side-to-FRU-sideQFXC01-FANBO
AC power supply
Documentation
Related
JPSU-650W-AC-AFI
QFXC01-PWRACI-650A
FRU-side-to-port-side
Port-side-to-FRU-sideJPSU-650W-AC-AFO
FRU-side-to-port-sideJPSU-650W-DC-AFIDC power supply
Port-side-to-FRU-sideJPSU-650W-DC-AFO
The chassis includes a fan speed-control system. Under normal operating conditions, fans operate at reduced speed to reduce noise and power consumption.
Temperature sensors in the chassis monitor the temperature within the chassis. The system raises an alarm if a fan fails or if the temperature inside the chassis rises above permitted levels. If the temperature inside the chassis rises above the threshold, the device shuts down automatically. You can see the status of fans and the temperature remotely through the CLI by issuing the operational mode command show chassis
environment.
You cannot replace a single fan module. If one or more fan modules fail, you must replace the entire fan tray.
Field-Replaceable Units for QFX3600 and QFX3600-I Devices on page 18
Rear Panel of QFX3600 and QFX3600-I Devices on page 21
Prevention of Electrostatic Discharge Damage on page 200
Installing a Fan Tray in a QFX3600 or QFX3600-I Device on page 118
Removing a Fan Tray from a QFX3600 or QFX3600-I Device on page 119
Fan Tray LED on a QFX3600 or QFX3600-I Device on page 30

Fan Tray LED on a QFX3600 or QFX3600-I Device

Figure 12 on page 31 shows the location of the LED on the fan tray.
Copyright © 2017, Juniper Networks, Inc.30
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Table 11: Fan Tray LED
Chapter 3: Cooling System and Airflow
Figure 12: Fan Tray
2—1— LEDHandle
Table 11 on page 31 describes the function of the fan tray LED.
DescriptionStateColorName
Related
Documentation
The fan tray is operating normally.On steadilyGreenFan
BlinkingAmber
Cooling System and Airflow for QFX3600 and QFX3600-I Devices on page 27
Installing a Fan Tray in a QFX3600 or QFX3600-I Device on page 118
Removing a Fan Tray from a QFX3600 or QFX3600-I Device on page 119
An error has been detected in the fan tray.Replacethe fan tray as soon as possible. To maintain proper airflow through the chassis, leave the fan tray installed in the chassis until you are ready to replace it.
31Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.32
CHAPTER 4
g050002
Handle
Ejector lever
AC appliance inlet
Cord retainer
Power Supplies
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35
AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 37
DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 38

AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

The power supplies in QFX3500, QFX3600, and QFX3600-I devices (see
Figure 13 on page 33) are hot-removable and hot-insertable field-replaceable units
(FRUs) that you can install on the front panel without powering off the device or disrupting the switching function.
The AC power supply in QFX3500, QFX3600, and QFX3600-I devices is 650 W.
Figure 13: AC PowerSupply in QFX3500, QFX3600, or QFX3600-IDevices
Thepower supply providesFRU-to-portor port-to-FRUairflowdepending on the product SKU you purchase. On legacy switches, or switches with an LCD, this airflow is called back-to-front and front-to-back. The power supplies either have labels on the handles that indicate the direction of the airflow or they have color-coded handles with a fan icon. See Figure 15 on page 34 for an example of the power supply with the fan icon. A power supply with a blue handle denotes FRU-to-port airflow; a power supply with a gold-colored handle denotes port-to-FRU airflow.
33Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Figure 14: An Arrow Icon and AFI Label Identifying Airflow Direction on Power Supply Handle
Figure 15: A Fan Icon Identifying Airflow Direction on PowerSupply Handle
CAUTION: Verifythat the direction of the airflow on the power supply handle
matchesthe directionof airflowin the chassis.Ensure thateach powersupply you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm, and the status (OK/!) LED blinks amber.
Table 12 on page 34 shows the different power supplies and their direction of airflow.
Table 12: Airfow Direction in QFX3500, QFX3600, or QFX3600-I AC Power Supplies
Direction of AirflowModel
JPSU-650W-AC-AFI
QFXC01-PWRACI-650A
Related
Documentation
To avoid electrical injury, carefully follow instructions in “Connecting AC Power to a
QFX3500, QFX3600, or QFX3600-I Device” on page 83.
AC Power Cord Specifications for a QFX Series Device on page 52
AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 37
FRU-to-port
Port-to-FRUJPSU-650W-AC-AFO
Copyright © 2017, Juniper Networks, Inc.34
Front Panel of a QFX3500 Device
Field-Replaceable Units in a QFX3500 Device
AC Power Specifications for a QFX3500 Device
Prevention of Electrostatic Discharge Damage on page 200

DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device

The power supplies in a QFX3500, QFX3600, and QFX3600-I device (see
Figure 16 on page 35 and Figure 17 on page 36) are hot-removable and hot-insertable
field-replaceable units (FRUs) that you can install in the device without powering off the device or disrupting the switching function.
The DC power supply in QFX3500, QFX3600, and QFX3600-I devices is 650 W.
NOTE: The V+ terminals are referredto as +RTN and V–terminals are referred
to as –48 V in “DC Power Wiring Sequence Warning” on page 209 and “DC
Power Electrical Safety Guidelines for Switches” on page 204.
Chapter 4: Power Supplies
Figure 16: DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device
3—1— Ejector leverHandle
2—Terminal block
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5
2
3
4
QFX3600 Device Hardware Documentation
Figure 17: DC Power Supply Faceplate
5—1— ESD grounding pointShunt positive input terminals
6—2— Fault LEDShunt negative input terminals
7—3— Output LEDTerminal block
8—4— Input LEDEjector lever
CAUTION: The V+ terminals are shunted internally together, as are the V-
terminals. The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.
The power supply provides FRU-to-port or port-to-FRU airflow depending on the SKU you purchase. The power supplies have labels and arrows on the handles that depict the direction of airflow (see Figure 18 on page 37). The label AFI denotes FRU-to-port airflow.
AFO denotes port-to FRU airflow.
Copyright © 2017, Juniper Networks, Inc.36
Chapter 4: Power Supplies
Figure 18: Label Identifying Airflow Direction on Power Supply Handle
1— Airflow in indicator
CAUTION: Verify that the airflow direction of the power supply handle
matchesthe directionof airflowin the chassis.Ensure thateach powersupply you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm, and the status (OK/!) LED blinks amber.
Table 13 on page 37 shows the different power supplies and their direction of airflow.
Table 13: Airflow Direction in QFX3500, QFX3600, and QFX3600-I Device DC Power Supplies
Direction of AirflowModel
FRU-to-portJPSU-650W-DC-AFI
Port-to-FRUJPSU-650W-DC-AFO
To avoid electrical injury, carefully follow instructions in “Connecting DC Power to a
QFX3500, QFX3600, or QFX3600-I Device” on page 86.
Related
Documentation
DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 38
DC Power Specifications for a QFX3500 Device
DC Power Specifications for a QFX3600 or QFX3600-I Device on page 53

AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

Figure 19 on page 38 shows the location of the LEDs on the power supply.
37Copyright © 2017, Juniper Networks, Inc.
g050008
AC OK
DC OK
Fault
QFX3600 Device Hardware Documentation
Figure19: ACPowerSupply LEDs on a QFX3500, QFX3600,or QFX3600-I Device
Table 14 on page 38 describes the LEDs on the AC power supplies.
Table 14: AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device
DescriptionStateColorLED
Related
Documentation
OffUnlitAC OK
OffUnlitDC OK
On steadilyAmberFault
The power supply is disconnected from power, or power is not coming into the power supply.
Power is coming into the power supply.On steadilyGreen
The power supply is disconnected from power, or the power supply is not sending out power correctly.
The power supply is sending out power correctly.On steadilyGreen
An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.
NOTE: If the AC OK LED and the DC OK LED are unlit, either the AC power
cord is not installed properly or the power supply fuse has failed. If the AC
OK LED is lit and the DC OK LED is unlit, the AC power supply is installed
properly, but the power supply has an internal failure.
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 83

DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device

Figure 20 on page 39 shows the location of the LEDs on the DC power supply.
Copyright © 2017, Juniper Networks, Inc.38
g050211
1
678
5
2
3
4
Chapter 4: Power Supplies
Figure 20: DC Power Supply Faceplate on a QFX3500, QFX3600, or QFX3600-I Device
5—1— ESD grounding pointShunt positive input terminals
6—2— Fault LEDShunt negative input terminals
7—3— Output LEDTerminal block
8—4— Input LEDEjector lever
CAUTION: The V+ terminals are shunted internally together, as are the V-
terminals. The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.
Table 15 on page 39 describes the LEDs on the DC power supplies.
Table 15: DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device
DescriptionStateColorName
OffUnlitInput
OffUnlitOutput
The power supply is disconnected from power, or power is not coming into the power supply.
Power is coming into the power supply.On steadilyGreen
The power supply is disconnected from power, or the power supply is not sending out power correctly.
The power supply is sending out power correctly.On steadilyGreen
39Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Table 15: DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device (continued)
DescriptionStateColorName
Related
Documentation
On steadilyAmberFault
DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35
Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 86
An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.
Copyright © 2017, Juniper Networks, Inc.40
PART 2
Site Planning, Preparation, and Specifications
Preparation Overview on page 43
Power Specifications and Requirements on page 51
Transceiver and Cable Specifications on page 55
Pinout Specifications on page 65
41Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.42
CHAPTER 5
Preparation Overview
Site Preparation Checklist for a QFX3600 or QFX3600-I Device on page 43
Environmental Requirements and Specifications for QFX3600 and QFX3600-I Devices on page 44
General Site Guidelines on page 45
Site Electrical Wiring Guidelines on page 46
Rack Requirements for a QFX3600 or QFX3600-I Device on page 46
Cabinet Requirements for a QFX3600 or QFX3600-I Device on page 48
Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or QFX3600-I Device on page 49

Site Preparation Checklist for a QFX3600 or QFX3600-I Device

The checklist in Table 16 on page 43 summarizes the tasks you need to perform when preparing a site for QFX3600 or QFX3600-I device installation.
Table 16: Site Preparation Checklist
Environment
Verify that environmental factors such as temperature and humidity do not exceed device tolerances.
Power
Measure distance between external power sources and device installation site.
Calculate the power consumption and requirements.
Rack or Cabinet
DatePerformed ByFor More InformationItem or Task
“Environmental Requirements and Specifications for QFX3600 and QFX3600-I Devices” on page 44
“AC PowerSpecificationsfor a QFX3600 or QFX3600-I Device” on page 51
“DC Power Specificationsfor a QFX3600 or QFX3600-I Device” on page 53
43Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Table 16: Site Preparation Checklist (continued)
DatePerformed ByFor More InformationItem or Task
Verify that your rack or cabinet meets the minimum requirements for the installation of the switch.
Plan rack or cabinet location, including required space clearances.
Secure the rack or cabinet to the floor and building structure.
Cables
Acquire cables and connectors:
Determine the number of cables needed based on your planned configuration.
Review the maximum distance allowed foreach cable. Choose the length of cable based on the distance between the hardware components being connected.
Plan the cable routing and management.
Related
Documentation
General Safety Guidelines and Warnings on page 171
General Site Guidelines on page 45
“Rack Requirements for a QFX3600 or QFX3600-I Device” on page 46
“Cabinet Requirements for a QFX3600 or QFX3600-I Device” on page 48
“ClearanceRequirements for Airflowand Hardware Maintenance for a QFX3600 or QFX3600-I Device” on page 49
“Determining Interface Support for the QFX3600 Device” on page 55
Determining Transceiver Support for QFabric Systems
Installing and Connecting a QFX3600 or QFX3600-I Device on page 71

EnvironmentalRequirements and Specificationsfor QFX3600 and QFX3600-I Devices

The QFX3600 and QFX3600-I devices must be installed in a rack or cabinet housed in a dry, clean, well-ventilated, and temperature-controlled environment.
Follow these environmental guidelines:
The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the efficiency of the device cooling system.
Maintain ambient airflow for normal device operation. If the airflow is blocked or restricted, or if the intake air is too warm, the device might overheat, leading to the device temperature monitor shutting down the device to protect the hardware components.
Table 17 on page 45 provides the required environmental conditions for normal device
operation.
Copyright © 2017, Juniper Networks, Inc.44
Table 17: QFX3600 and QFX3600-I Device Environmental Tolerances
ToleranceDescription
No performance degradation to 10,000 feet (3048 meters)Altitude
Normal operation ensured in relative humidity range of 5% through 85%, noncondensingRelative humidity
Temperature
Normal operation ensured in temperature range of 32° F through 104° F (0° C through 40° C)
Short-term operation ensured in temperature range of 23° F through 131° F (–5° C through 55° C)
NOTE: As defined in NEBS GR-63-CORE, Issue 3, short-term events can be up to 96 hours in
duration but not more than 15 days per year.
Nonoperatingstoragetemperature in shipping container: –40° F through158° F (–40° C through 70° C)
Designed to comply with Zone 4 earthquake requirements per NEBS GR-63-CORE, Issue 3.Seismic
Chapter 5: Preparation Overview
Related
Documentation
Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or
QFX3600-I Device on page 49
Installing and Connecting a QFX3600 or QFX3600-I Device on page 71

General Site Guidelines

Efficient device operation requires proper site planning and maintenance and proper layout of the equipment, rack or cabinet (if used), and wiring closet.
To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:
Keep the area around the chassis free from dust and conductive material, such as metal flakes.
Followprescribed airflow guidelines to ensure that the cooling systemfunctions properly and that exhaust from other equipment does not blow into the intake vents of the device.
NOTE: Install QFX Series devices only in restricted areas, such as dedicated
equipment rooms and equipment closets, in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical Code, ANSI/NFPA 70.
Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the equipment. Static discharge can cause components to fail completely or intermittently over time.
Install the device in a secure area, so that only authorized personnel can access the device.
45Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Related
Prevention of Electrostatic Discharge Damage on page 200
Documentation

Site Electrical Wiring Guidelines

Table 18 on page 46 describes the factorsyou must consider while planning the electrical
wiring at your site.
WARNING: It is particularly important to provide a properly grounded and
shielded environment and to use electrical surge-suppression devices.
Table 18: Site Electrical Wiring Guidelines
GuidelinesSite Wiring Factor
Signaling limitations
If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:
Improperly installed wires cause radio frequency interference (RFI).
Damage from lightning strikes occurs when wires exceed recommended distances or pass between buildings.
Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and electronic devices.
Radio frequency interference
Electromagnetic compatibility
Related
Documentation
To reduce or eliminate RFI from your site wiring, do the following:
Use a twisted-pair cable with a good distribution of grounding conductors.
If you must exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.
If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice.
Some of the problems caused by strong sources of electromagnetic interference (EMI) are:
Destruction of the signal drivers and receivers in the device
Electrical hazards as a result of power surges conducted over the lines into the equipment
General Safety Guidelines and Warnings on page 171
General Electrical Safety Guidelines and Warnings on page 199
Prevention of Electrostatic Discharge Damage on page 200

Rack Requirements for a QFX3600 or QFX3600-I Device

QFX3600 and QFX3600-I devices are designed to be installed on two-post racks or four-post racks.
Rack requirements consist of:
Copyright © 2017, Juniper Networks, Inc.46
Rack type
Mounting bracket hole spacing
Rack size and strength
Rack connection to the building structure
Table 19 on page 47 provides the rack requirements and specifications for a QFX3600
or QFX3600-I device.
Table 19: Rack Requirements for a QFX3600 or QFX3600-I Device
GuidelinesRack Requirement
Chapter 5: Preparation Overview
Rack type
Mounting bracket hole spacing
Rack size and strength
Rack connection to building structure
Use a two-post or a four-post rack. You can mount the switch on any two-post or four-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75 in./4.45 cm) increments and that meets the size and strength requirements to support the weight.
A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association (http://www.eia.org).
The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can be mounted in any rack that provides holes spaced at that distance.
Ensure that the rack complies with the standards for a 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics
Industry Association.
Ensure that the rack rails are spaced widely enough to accommodate the device chassis’ external dimensions. The outer edges of the mounting brackets extend the width to 19.2 in. (48.8 cm).
On four-post racks, the front and rear rack rails must be spaced between 19.3 in. (49 cm) and 36 in. (91.4 cm) front-to-back.
The rack must be strong enough to support the weight of the device.
Ensure that the spacing of rails and adjacent racks allows for proper clearance around the device and rack.
Secure the rack to the building structure.
If earthquakes are a possibility in your geographical area, secure the rack to the floor.
Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.
The following types of mounting brackets are supplied with each switch:
One pair of mounting brackets for front-mounting or rear-mounting the switch on two posts of a rack
One pair of mounting brackets for mid-mounting the switch (front or rear facing) on two posts of a rack
One pair of fixed railmounting bracketsfor front-mounting or rear-mounting the switch on four posts of a rack
One pair of adjustable rail mounting brackets for front-mounting or rear-mounting the switch on four posts of a rack
47Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Related
Documentation
Chassis Physical Specifications for QFX3600 and QFX3600-I Devices on page 17
Rack-Mounting and Cabinet-Mounting Warnings on page 182
Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or
QFX3600-I Device on page 49
Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet on
page 75
Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet on
page 73

Cabinet Requirements for a QFX3600 or QFX3600-I Device

You can mount a QFX3600 or QFX3600-I device in a cabinet that contains a four-post 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the former Electronics Industry Association.
Cabinet requirements consist of:
Cabinet size and clearance
Cabinet airflow requirements
Table 20 on page 48 provides the cabinetrequirements and specifications for a QFX3600
or QFX3600-I device.
Table 20: Cabinet Requirements for a QFX3600 or QFX3600-I Device
GuidelinesCabinet Requirement
Cabinet size and clearance
Cabinet airflow requirements
Related
Documentation
The minimum cabinet size for accommodating a QFX3600 device is 28 in. (71.1 cm) deep. Large cabinets improve airflow and reduce the chance of overheating.
When you mount the device in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating.
Ensure that the cool air supply you provide through the cabinet adequately dissipates the thermal output of the device (or devices).
Ensure that the cabinet allows the chassis hot exhaust air to exit the cabinet without recirculating into the device. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust.
The device fans exhaust hot air through the rear of the chassis. Install the device in the cabinet in a way that maximizes the open space on the fan tray side of the chassis. This maximizes the clearance for critical airflow.
Route and dress all cables to minimize the blockage of airflow to and from the chassis.
Ensure that the spacing of rails and adjacent cabinets allows for the proper clearance around the device and cabinet.
Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or
QFX3600-I Device on page 49
Copyright © 2017, Juniper Networks, Inc.48
FRUs
Ports
g050212
16.9 in.
(42.9 cm)
19.2 in.
(48.8 cm)
Mounting bracket
Clearance required
for maintenance
24 in. (60.9 cm)
19.4 in.
(49.2 cm)
Clearance required
for maintenance
24 in. (60.9 cm)
Chapter 5: Preparation Overview
Rack Requirements for a QFX3600 or QFX3600-I Device on page 46
Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet on
page 75
Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet on
page 73

Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or QFX3600-I Device

When planning the site for installing a QFX3600 or QFX3600-I device, you must allow sufficient clearance around the installed device (see Figure 21 on page 49).
Figure 21: ClearanceRequirements for Airflow and Hardware Maintenance for a QFX3600 or QFX3600-I Device
Related
Documentation
For the cooling system to function properly, the airflow around the chassis must be unrestricted. See “Cooling System and Airflow for QFX3600 and QFX3600-I Devices”
on page 27 for more information about the airflow through the chassis.
If you are mounting a QFX3600 or QFX3600-I device in a rack or cabinet 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 QFX3600 or QFX3600-I device. For service personnel to remove and install hardware components, you must leave adequate space at the front and back of the device. NEBS GR-63 recommends that you allow at least 30 in. (76.2 cm) in front of the rack or cabinet and 24 in. (61 cm) behind the rack or cabinet.
Rack Requirements for a QFX3600 or QFX3600-I Device on page 46
49Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Cabinet Requirements for a QFX3600 or QFX3600-I Device on page 48
General Site Guidelines on page 45
Rack-Mounting and Cabinet-Mounting Warnings on page 182
Copyright © 2017, Juniper Networks, Inc.50
CHAPTER 6
Power Specifications and Requirements
AC Power Specifications for a QFX3600 or QFX3600-I Device on page 51
AC Power Cord Specifications for a QFX Series Device on page 52
DC Power Specifications for a QFX3600 or QFX3600-I Device on page 53
Grounding Cable and Lug Specifications for QFX3600 and QFX3600-I Devices on page 53

AC Power Specifications for a QFX3600 or QFX3600-I Device

Table 21 on page 51 describes the AC power specifications for a QFX3600 or QFX3600-I
device.
Table 21: AC Power Specifications for a QFX3600 or QFX3600-I Device
SpecificationItem
AC input voltage
AC input current rating
Related
Documentation
Operating range:
100–240 VAC
50–60 HzAC input line frequency
4 A at 100VAC
2 A at 240 VAC
255 WTypical power consumption
345 WMaximum power consumption
AC Power Cord Specifications for a QFX Series Device on page 52
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
General Safety Guidelines and Warnings on page 171
General Electrical Safety Guidelines and Warnings on page 199
51Copyright © 2017, Juniper Networks, Inc.
g021274
QFX3600 Device Hardware Documentation

AC Power Cord Specifications for a QFX Series Device

Detachable AC power cords are shipped with the chassis, if you include them as part of your order. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source outlet that is standard for your geographical location.
NOTE: In North America, AC power cords must not exceed 14.75 feet
(approximately4.5 meters)in length,to complywith NationalElectricalCode (NEC) Sections400-8 (NFPA75, 5-2.2) and 210-52, and Canadian Electrical Code (CEC) Section 4-010(3). The cords that can be ordered for the QFX Series switches are in compliance.
Table 22 on page 52 lists AC power cord specifications provided for each country or
region.
Table 22: AC Power Cord Specifications
Switzerland, and United Kingdom)
250 VAC, 10 A, 50 HzSwitzerland
GraphicJuniper Model NumberPlug StandardsElectrical SpecificationsCountry/Region
CG_CBL-C13-06-AUAS/NZ 3109-1996250 VAC, 10 A, 50 HzAustralia
CG_CBL-C13-06-CHGB 1002-1996250 VAC, 10 A, 50 HzChina
CG_CBL-C13-06-EUCEE (7) VII250 VAC, 10 A, 50 HzEurope (except Italy,
CG_CBL-C13-06-ITCEI 23-16/VII250 VAC, 10 A, 50 HzItaly
CG_CBL-C13-06-JPJIS C8303125 VAC, 12 A, 50 Hz or 60 Hz
CG_CBL-C13-06-USCAN/CSA No. 49-92125 VAC, 13 A, 60 HzNorth America
CG_CBL-C13-06-KRKSC 8305; K60884-1250 VAC, 10 A, 60 HzSouth Korea
CG_CBL-C13-06-SZSEV 1011 SEV 1991; EN
60320 C13
CG_CBL-C13-06--UKBS 1363/A250 VAC, 10 A, 50 HzUnited Kingdom
Related
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
Documentation
Copyright © 2017, Juniper Networks, Inc.52
Chapter 6: Power Specifications and Requirements
General Safety Guidelines and Warnings on page 171
General Electrical Safety Guidelines and Warnings on page 199
Prevention of Electrostatic Discharge Damage on page 200
AC Power Supply for a QFX5100 Device
QFX10002 AC Power Specifications
QFX5200 AC Power Specifications
QFX5110 AC Power Specifications

DC Power Specifications for a QFX3600 or QFX3600-I Device

Table 23 on page 53 describes the DC power specifications for a QFX3600 or QFX3600-I
device.
Table 23: DC Power Specifications for a QFX3600 or QFX3600-I Device
SpecificationsItem
DC input voltage
Documentation
Related
DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35
DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 38
Minimum operating voltage: –40 VDC
Nominal operating voltage: –48 VDC
Operating voltage range: –40 VDC through –72 VDC
8 A maximum at nominal operating voltage (–48 VDC)DC input current rating
341 WTypical power consumption
252 WMaximum power consumption

Grounding Cable and Lug Specifications for QFX3600 and QFX3600-I Devices

For installations that require a separate grounding conductor to the chassis, the device must be adequately grounded before power is connected to ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements. To ground a QFX3600 or QFX3600-I device, connect a grounding cable to earth ground and then attach it to the chassis grounding points.
WARNING: The device is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently
53Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Before connecting the device to earth ground, review the following information:
The grounding points on the chassis are sized for M5 screws. The grounding points are spaced at 0.625 in. (15.86 mm). M5 screws with integrated washers are provided in the accessory kit. You may use a disposable ESD strap to connect to grounding points.
The grounding lug required is a Panduit LCD10-10A-L or equivalent. This grounding lug is provided in the accessory kit. The grounding lug providedaccommodates14–10 AWG (2–5.3 mm²) stranded wire. You may only use clip-style ESD straps to connect to a grounding lug.
connectedto earth ground for installationsthat require a separate grounding conductor to the chassis.
CAUTION: Before device installation begins, a licensed electrician must
attach a cable lug to the grounding cables that you supply. See “Connecting
Earth Ground to QFX3600 or QFX3600-I Devices” on page 82. A cable with
an incorrectly attached lug can damage the device.
Related
Documentation
The grounding cable that you provide for a QFX3600 or QFX3600-I device must be 14 AWG (2 mm²), minimum 60° C wire, or as permitted by the local code.
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 33
Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 83
Copyright © 2017, Juniper Networks, Inc.54
CHAPTER 7
Transceiver and Cable Specifications
Determining Interface Support for the QFX3600 Device on page 55
Cable Specifications for QSFP+ and QSFP28 Transceivers on page 56
Cable Specifications for Console and Management Connections for the QFX Series on page 58
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion on page 59
Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device on page 61
Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device on page 61

Determining Interface Support for the QFX3600 Device

The QFX3600 device provides 16 QSFP+ ports, which support QSFP+ transceivers and QSFP+ DAC or DAC breakout cables.
On a QFX3600 Node device in a QFabric system, four ports (labeled Q0 through Q3) operateas40-Gbps data uplink (fte) ports for uplink connections betweenyour QFX3600 Node device and your Interconnect device. Twelveports (labeled Q4 through Q15) operate in 10-Gigabit Ethernet (xe) mode to support 48 10-Gigabit Ethernet interfaces for connections to either endpoint systems or external networks. Optionally, you can choose to configure ports Q0 through Q7 to operate as 40-Gbps data uplink (fte) ports, and ports Q2 through Q15 to operate in 10-Gigabit Ethernet (xe) or 40-Gigabit Ethernet (xle) mode. See Configuring the Port Type on QFX3600 Node Devices for more information.
On a QFX3600 standalone switch, ports Q0 through Q15 operateas 40-Gigabit Ethernet (xle) ports. Optionally, you can choose to configure ports Q0 through Q15 to operate as 10-Gigabit Ethernet (xe) ports. See “Configuring the Port Type on QFX3600 Standalone
Switches” on page 133 for more information.
NOTE: On a QFX3600 standalone switch, you can either configure up to 63
or 64 10-Gigabit Ethernet ports on ports Q0 through Q15, depending on the Junos OS releaserunningon the switch. Seethe Channelizing Interfaces topic for your specific Junos OS release for further details.
55Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
You can use SFP transceiverstoconnect the QFX3600 device toa managementnetwork, or the control plane and management network of a QFabric system. The 1000BASE-SX Gigabit Ethernet SFP module (QFX-SFP-1GE-SX) is supported in the SFP management ports labeled C0S and C1S. The QFX3600 device also has two 1000BASE-T RJ-45 management ports (labeled C0 and C1), which can be used to connect the QFX3600 device to a management network, or the control plane and management network of a QFabric system.
You can find information about the optical transceivers supported on your Juniper device by using the Hardware Compatibility Tool.In addition to transceiverand connection type, the optical and cable characteristics–where applicable–are documented for each transceiver. The HardwareCompatibilityTool enables you to search by product, displaying all the transceivers supported on that device, or category, by interface speed or type. The list of supported transceivers for the QFX3600 and QFX3600-I Interconnect device is located at https://pathfinder.juniper.net/hct/product/#prd=QFX3600.
NOTE: The QSFP+ DAC cables consist of a cable assembly terminated with
QSFP+ transceivers on either end. If you use the QSFP+ DAC cable as the data plane connection between a QFX3600-I Interconnect device and a QFX3600or QFX3500Node device,the interfaceis automatically configured to operate at 40 Gbps. If you use the QSFP+ DAC cable to interconnect a QFX3600 Node device with another device, the interface is automatically configured to operate as four 10-Gigabit Ethernet interfaces over one cable.
CAUTION: If you facea problem running a Juniper Networks device that uses
a third-party optic or cable, the Juniper NetworksTechnical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend thatyou check the third-partyoptic or cable and potentially replaceit with an equivalent Juniper Networks optic or cable that is qualified for the device.
Related
Documentation
Front Panel of a QFX3600 Device on page 19
Rear Panel of QFX3600 and QFX3600-I Devices on page 21

Cable Specifications for QSFP+ and QSFP28 Transceivers

The 40-Gigabit Ethernet QSFP+ and 100-Gigabit Ethernet QSFP28 transceiversthat are used in QFX Series and EX4600 switches use 12-ribbon multimode fiber crossover cables with female MPO/UPC connectors. The fiber can be either OM3 or OM4. These cables are not sold by Juniper Networks.
CAUTION: To maintain agency approvals, use only a properly constructed,
shielded cable.
Copyright © 2017, Juniper Networks, Inc.56
Chapter 7: Transceiver and Cable Specifications
TIP: Ensure that you order cables with the correct polarity. Vendors refer to
these crossover cables as key up to key up, latch up to latch up, Type B, or Method B. If you are using patch panels between two QSFP+ or QSFP28
transceivers,ensure that the properpolarity is maintained through the cable plant.
Table 24 on page 57 describes the signals on each fiber. Table 25 on page 57 shows the
pin-to-pin connections for proper polarity.
Table 24: QSFP+ and QSFP28 Optical Module Receptacle Pinouts
SignalFiber
Tx0 (Transmit)1
Tx1 (Transmit)2
Tx2 (Transmit)3
Tx3 (Transmit)4
Unused5
Unused6
Unused7
Unused8
Rx3 (Receive)9
Rx2 (Receive)10
Rx1 (Receive)11
Rx0 (Receive)12
Table 25: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts
PinPin
121
112
103
94
57Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Table 25: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts (continued)
PinPin
85
76
67
58
49
310
211
112
Related
Documentation
Determining Interface Support for the QFX3500 Device
Determining Interface Support for the QFX3600 Device on page 55
Determining Interface Support for the QFX5100 Device
Determining Transceiver Support for the QFX5110
Determining QFX5200 Optical Interface Support
Determining QFX10000 Optical Transceiver and Cable Support

Cable Specifications for Console and Management Connections for the QFX Series

Table 26 on page 58 lists the specifications for the cables that connect the QFX Series
to a management device.
NOTE: The QFX Series can be configured with SFP management ports that
support 1000BASE-SX transceivers. See The Hardware Compatibility Tool for more on the fiber-optic cables required for use with these transceivers.
Table 26: Cable Specifications for Console and Management Connections for the QFX Series
Porton QFX Series Device
Device ReceptacleMaximum LengthCable SuppliedCable Specification
RS-232(EIA-232) serial cableConsole port
RJ-45 patch cable and RJ-45 to DB-9 adapter
Copyright © 2017, Juniper Networks, Inc.58
RJ-457 feet (2.13 meters)One 7-foot (2.13-meter) long
Chapter 7: Transceiver and Cable Specifications
Table 26: Cable Specifications for Console and Management Connections for the QFX Series (continued)
Porton QFX Series Device
Management port
Related
Documentation
Category 5 cable or equivalent suitable for 1000BASE-T operation
One 7-foot (2.13-meter) long RJ-45 patch cable
(100 meters)
Console Port Connector Pinouts for the QFX Series on page 66
Management Port Connector Pinouts for the QFX Series
Connecting a QFX Series Device to a Management Console
Connecting a QFX3600 Device to a Network for Out-of-Band Management
Connecting a QFX3500 Device to a Network for Out-of-Band Management
Connecting a QFX3100 Director Device to a Network for Out-of-Band Management
Connecting a QFX5100 Device to a Network for Out-of-Band Management
Connecting a QFX5110 to a Network for Out-of-Band Management
Connecting a QFX5200 to a Network for Out-of-Band Management
Connecting a QFX5300 to a Network for Out-of-Band Management
Device ReceptacleMaximum LengthCable SuppliedCable Specification
RJ-45328 feet

Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion

To determine the power budget and power margin needed for fiber-optic connections, you need to understand how signal loss, attenuation,and dispersion affect transmission. The QFX Series uses various types of network cables, including multimode and single-mode fiber-optic cables.
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables on page 59
Attenuation and Dispersion in Fiber-Optic Cable on page 60
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables
Multimode fiber is large enough in diameter to allow rays of light to reflect internally (bounce off the walls of the fiber). Interfaces with multimode optics typically use LEDs as light sources. However, LEDs are not coherent light sources. They spray varying wavelengths of light into the multimode fiber, which reflect the light at different angles. Light rays travel in jagged lines through a multimode fiber, causing signal dispersion. When light traveling in the fiber core radiates into the fiber cladding (layers of lower refractive index material in close contact with a core material of higher refractive index), higher-order mode loss occurs. Together,these factors reduce the transmission distance of multimode fiber compared to that of single-mode fiber.
Single-mode fiber is so small in diameter that rays of light reflect internally through one layeronly. Interfaces with single-mode optics use lasers as light sources. Lasers generate
59Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
a single wavelength of light, which travelsin a straight line through the single-mode fiber. Compared to multimode fiber, single-mode fiber has a higher bandwidth and can carry signals for longer distances. It is consequently more expensive.
For information about the maximum transmission distance and supported wavelength range for the types of single-mode and multimode fiber-optic cables that are connected to the QFX Series, see the Hardware Compatibility Tool . Exceeding the maximum transmission distances can result in significant signal loss, which causes unreliable transmission.
Attenuation and Dispersion in Fiber-Optic Cable
An optical data link functions correctlyprovided that modulatedlight reachingthe receiver has enough power to be demodulated correctly. Attenuation is the reduction in strength of the light signal during transmission. Passive media components such as cables, cable splices, and connectors cause attenuation. Although attenuation is significantly lower for optical fiber than for other media, it still occurs in both multimode and single-mode transmission. An efficient optical data link must transmit enough light to overcome attenuation.
Dispersion is the spreading of the signal over time. The following two types of dispersion can affect signal transmission through an optical data link:
Chromatic dispersion, which is the spreading of the signal over time caused by the different speeds of light rays.
Modal dispersion, which is the spreading of the signal over time caused by the different propagation modes in the fiber.
For multimode transmission, modal dispersion, rather than chromatic dispersion or attenuation, usually limits the maximum bit rate and link length. For single-mode transmission, modal dispersion is not a factor. However, at higher bit ratesand over longer distances, chromatic dispersion limits the maximum link length.
An efficient optical data link must have enough light to exceed the minimum power that the receiver requires to operate within its specifications. In addition, the total dispersion must be within the limits specified for the type of link in the Telcordia Technologies document GR-253-CORE (Section 4.3) and International Telecommunications Union (ITU) document G.957.
When chromatic dispersion is at the maximum allowed, its effect can be considered as a power penalty in the power budget. The optical power budget must allow for the sum of component attenuation, power penalties (including those from dispersion), and a safety margin for unexpected losses.
Related
Documentation
Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device on page 61
Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device on page 61
Copyright © 2017, Juniper Networks, Inc.60
Chapter 7: Transceiver and Cable Specifications

Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device

Calculate the link's power budget when planning fiber-optic cable layout and distances to ensure that fiber-optic connections have sufficient power for correct operation. The powerbudget is the maximum amount of power the link can transmit.When you calculate the power budget, you use a worst-case analysis to provide a margin of error,even though all the parts of an actual system do not operate at the worst-case levels.
To calculate the worst-case estimate for the fiber-optic cable power budget (PB) for the link:
1. Determinevalues for the link's minimum transmitter power (P
) and minimum receiver
T
sensitivity (PR). For example, here, (PT) and (PR) are measuredin decibels, and decibels are referenced to 1 milliwatt (dBm):
PT= –15 dBm
PR= –28 dBm
NOTE: See the specifications for your transmitter and receiver to find the
minimum transmitter power and minimum receiver sensitivity.
2. Calculate the power budget (P
B
) by subtracting (PR) from (PT):
–15 dBm – (–28 dBm) = 13 dBm
Related
Documentation
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion
on page 59
Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device on page 61

Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device

Calculate the link's power margin when planning fiber-optic cable layout and distances to ensure that fiber-optic connections have sufficient signal power to overcome system losses and still satisfy the minimum input requirements of the receiver for the required performance level. The power margin (PM) is the amount of power available after attenuation or link loss (LL) has been subtracted from the power budget (PB).
When you calculate the power margin, you use a worst-case analysis to provide a margin of error, even though all the parts of an actual system do not operate at worst-case levels.A powermargin (PM) greater than zero indicatesthat the power budgetis sufficient to operate the receiver and that it does not exceed the maximum receiver input power. This means the link will work. A (PM) that is zero or negative indicates insufficient power to operate the receiver. See the specification for your receiver to find the maximum receiver input power.
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Before you begin to calculate the power margin:
Calculate the power budget. See “Calculating the Fiber-Optic Cable Power Budget for
a QFX Series Device” on page 61.
To calculate the worst-case estimate for the power margin (PM) for the link:
1. Determine the maximum value for link loss (LL) by adding estimated values for
applicable link-loss factors; for example, use the sample values for various factors as provided in Table27 on page 62 (here, the link is 2 km long and multimode, and the (PB) is 13 dBm).
Table 27: Estimated Values for Factors Causing Link Loss
Sample Link Loss (LL) Calculation ValuesEstimated Link Loss ValueLink-Loss Factor
0.5 dBmMultimode—0.5 dBmHigher-order mode losses
0 dBmSingle-mode—None
Modal and chromatic dispersion
(CRM)
bandwidth and distance is less than 500 MHz/km
0.5 dBmConnector
0.5 dBmSplice
Multimode—1 dBm/kmFiber attenuation
Single-mode—0.5 dBm/km
NOTE: For information about the actual amount of signal loss caused by
equipment and other factors, see your vendor documentation for that equipment.
0 dBmMultimode—None, if product of
0 dBmSingle-mode—None
This example assumes five connectors. Loss for five connectors: 5 (0.5 dBm) = 2.5 dBm.
This example assumes two splices. Loss for two splices: 2 (0.5 dBm) = 1 dBm.
This example assumes the link is 2 km long. Fiber attenuation for 2 km: 2 km (1 dBm/km) = 2 dBm.
This example assumes the link is 2 km long. Fiber attenuation for 2 km: 2 km (0.5 dBm/km) = 1 dBm.
1 dBm1 dBmClock Recovery Module
2. Calculate the (P
PB– LL = P
M
) by subtracting (LL) from (PB):
M
Copyright © 2017, Juniper Networks, Inc.62
Chapter 7: Transceiver and Cable Specifications
13 dBm – 0.5 dBm [HOL] – 5 (0.5 dBm) – 2 (0.5 dBm) – 2 km (1.0 dBm/km) – 1 dB [CRM] = P
13 dBm – 0.5 dBm – 2.5 dBm – 1 dBm – 2 dBm – 1 dBm = P
M
M
PM= 6 dBm
The calculatedpower margin is greaterthan zero,indicating that the link has sufficient power for transmission. Also, the power margin value does not exceed the maximum receiverinput power. Refer to the specifications for your receiver to find the maximum receiver input power.
Related
Documentation
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion
on page 59
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QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.64
CHAPTER 8
Pinout Specifications
USB Port Specifications for the QFX Series on page 65
Console Port Connector Pinouts for the QFX Series on page 66
RJ-45 Management Port Connector Pinout Information on page 67

USB Port Specifications for the QFX Series

The following Juniper Networks USB flash drives have been tested and are officially supported for the USB port in the QFX Series:
RE-USB-1G-S—1-gigabyte (GB) USB flash drive (except QFX3100 Director device)
RE-USB-2G-S—2-GB USB flash drive (except QFX3100 Director device)
RE-USB-4G-S—4-GB USB flash drive
CAUTION: Any USB memory product not listed as supported for the QFX
Series has not been tested by Juniper Networks. The use of any unsupported USB memory product could expose your device to unpredictable behavior. Juniper Networks TechnicalAssistanceCenter (JTAC) can provideonly limited support for issuesrelatedtounsupported hardware.Westrongly recommend that you use only supported USB flash drives.
CAUTION: Remove the USB flash drive before upgrading Junos OS or
rebooting a QFX Series device. Failure to do so could expose your device to unpredictable behavior.
NOTE: Executing the request system snapshot CLI command on a QFX3500
device requires an external USB flash drive with at least 4 GB of free space. We recommend using the RE-USB-4G-S flash drive.
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NOTE: USB flash drives used with the QFX Series device must support
USB 2.0 or later.
Related
Documentation
Creating an Emergency Boot Device on page 163
Performing a Recovery Installation Using an Emergency Boot Device

Console Port Connector Pinouts for the QFX Series

The console port (labeled CON, or CONSOLE) is an RS-232 serial interface that uses an RJ-45 connector to connect to a console management device. The default baud rate for the console port is 9600 baud.
Table 28 on page 66 provides the pinout information for the RJ-45 console connector.
An RJ-45 cable and RJ-45 to DB-9 adapter are supplied with the QFX Series device.
NOTE: If your laptop or PC does not have a DB-9 male connectorpin and you
want to connect your laptop or PC directly to a QFX Series device, use a combinationof the RJ-45 cableand RJ-45 to DB-9 adapter supplied with the device and a USB to DB-9 male adapter. You must provide the USB to DB-9 male adapter.
Table 28: Console Port Connector Pinouts for the QFX Series
DescriptionSignalPin
Related
Documentation
Request to sendRTS Output1
Data terminal readyDTR Output2
Transmit dataTxD Output3
Signal groundSignal Ground4
Signal groundSignal Ground5
Receive dataRxD Input6
Data carrier detectDCD Input7
Clear to sendCTS Input8
Connecting a QFX Series Device to a Management Console
Copyright © 2017, Juniper Networks, Inc.66

RJ-45 Management Port Connector Pinout Information

Table 29 on page 67 provides the pinout information for the RJ-45 connector for the
management port on Juniper Networks devices.
Table 29: RJ-45 Management Port Connector Pinout Information
DescriptionSignalPin
Transmit/receive data pair 1TRP1+1
Transmit/receive data pair 1TRP1-2
Transmit/receive data pair 2TRP2+3
Transmit/receive data pair 3TRP3+4
Transmit/receive data pair 3TRP3-5
Chapter 8: Pinout Specifications
Related
Documentation
Transmit/receive data pair 2TRP2-6
Transmit/receive data pair 4TRP4+7
Transmit/receive data pair 4TRP4-8
Connecting a Device to a Network for Out-of-Band Management on page 91
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QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.68
PART 3
Initial Installation and Configuration
Unpacking and Mounting the Device on page 71
Connecting the QFX3600 Device to Power on page 81
Connecting the Device to the Network on page 91
Performing Initial Configuration on page 103
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QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.70
CHAPTER 9
Unpacking and Mounting the Device
Installing and Connecting a QFX3600 or QFX3600-I Device on page 71
Unpacking a QFX3600 or QFX3600-I Device on page 72
Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet on page 73
Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet on page 75

Installing and Connecting a QFX3600 or QFX3600-I Device

To install and connect a QFX3600 or QFX3600-I device:
1. Follow the instructions in “Unpacking a QFX3600 or QFX3600-I Device” on page 72.
2. Mount the device by following the instructions appropriate for your site:
Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet on page 73
Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet on page 75
3. Follow the instructions in “Connecting Earth Ground to QFX3600 or QFX3600-I
Devices” on page 82.
4. Follow the instructions for connecting power as appropriate for your site:
Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 83
Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 86
5. Depending on how you will be using the QFX3600 or QFX3600-I device, take one of
the following actions:
If you are using the QFX3600 device as a standalone switch, follow the instructions in “Configuring a QFX3600 Device as a Standalone Switch” on page 103.
If you are using the QFX3600 device as a Node device in a QFX3000-G QFabric system,see QFX3000-G QFabric SystemInstallationOverview for information about the steps to install and configure your QFX3000-G QFabric system.
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If you are using the QFX3600 device as a Node device in a QFX3000-M QFabric system,see QFX3000-M QFabric System Installation Overview for information about the steps to install and configure your QFX3000-M QFabric system.
If you are using the QFX3600-I device as an Interconnect device in a QFX3000-M QFabric system, see QFX3000-M QFabric System Installation Overview for information about the steps to install and configure your QFX3000-M QFabric system.
Related
Documentation
Rack Requirements for a QFX3600 or QFX3600-I Device on page 46
Cabinet Requirements for a QFX3600 or QFX3600-I Device on page 48
Clearance Requirements for Airflow and Hardware Maintenance for a QFX3600 or
QFX3600-I Device on page 49

Unpacking a QFX3600 or QFX3600-I Device

The QFX3600 or QFX3600-I device chassis is a rigid sheet-metal structure that houses the hardware components. QFX3600and QFX3600-I devicesare shipped in a cardboard carton, secured with foam packing material. The carton also contains an accessory box and quick start instructions.
CAUTION: QFX3600and QFX3600-Idevices are maximally protectedinside
the shipping carton. Do not unpack the device until you are ready to begin installation.
To unpack a QFX3600 or QFX3600-I device:
1. Move the shipping carton to a staging area as close to the installation site as possible,
but where you have enough room to remove the system components.
2. Position the carton so that the arrows are pointing up.
3. Open the top flaps on the shipping carton.
4. Remove the accessory box and verify the contents against the inventory included in
the box. Table 30 on page 73 lists the inventory of components supplied with a QFX3600 or QFX3600-I device.
5. Pull out the packing material holding the device in place.
6. Verify the chassis components received:
Three fan trays
Copyright © 2017, Juniper Networks, Inc.72
Two power supplies
7. Save the shipping carton and packing materials in case you need to move or ship the
device later.
Table 30: Accessory Kit Part Contents
NOTE: Use only clip-style ESD grounding straps with the chassis grounding lug.
Chapter 9: Unpacking and Mounting the Device
QuantityParts
1Chassis grounding lug
2M5 screws to attach the chassis grounding lug to the protective earth terminal on the chassis
1Electrostatic discharge (ESD) grounding strap
2SFP/SFP+ port dust covers
16QSFP+ port dust covers
1RJ-45 cable and RJ-45 to DB-9 adapter for console port connection
2Mounting brackets for front-mounting in a four-post rack or cabinet
6M4 flat-head screws to attach the brackets for front-mounting in a rack or cabinet
2Rear installation blades for front-mounting in a four-post rack or cabinet
2Mounting brackets for front-mounting in a two-post rack or cabinet
2Mounting brackets for mid-mounting in a two-post rack or cabinet
6M4 pan-head screws to attach the brackets for front-mounting or mid-mounting in a rack or cabinet
Related
Installing and Connecting a QFX3600 or QFX3600-I Device on page 71
Documentation

Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet

You can mid-mount a QFX3600 or QFX3600-I device on two posts of a 19-in. rack or cabinet by using the mounting brackets provided with the device. (The remainder of this topic uses “rack” to mean “rack or cabinet.”)
You can also mount the device on four posts of a four-post rack by using the mounting brackets provided with the device. See “Mounting a QFX3600 or QFX3600-I Device on
Four Posts in a Rack or Cabinet” on page 75.
The holes in the mounting brackets are placed at 1 U (1.75 in., or 4.45 cm.) apart so that the device can be mounted in any rack that provides holes spaced at that distance.
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QFX3600 Device Hardware Documentation
Before mounting a QFX3600 or QFX3600-I device on two posts in a rack:
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
“Prevention of Electrostatic Discharge Damage” on page 200.
Verify that the site meets the requirements described in “Site Preparation Checklist
for a QFX3600 or QFX3600-I Device” on page 43.
Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the building structure.
Read “General Safety Guidelines and Warnings” on page 171, with particular attention to “Chassis Lifting Guidelines for a QFX3600 or QFX3600-I Device” on page 180.
Removethe device from the shipping carton(see “Unpacking a QFX3600 or QFX3600-I
Device” on page 72).
Ensure that you have the following parts and tools available:
ESD grounding strap (provided)
One pair of mounting brackets depending on how you want to mount the device (provided)
Use the front/rear mounting brackets (part number 540-038579) to front-mount or rear-mount the device.
Use the mid-mounting brackets (part number 540-038665) to mid-mount the device.
6 Phillips 4x6-mm pan-head mounting screws (provided)
Four screws to secure the chassis to the rack (not provided)
Appropriate screwdriver for the mounting screws (not provided)
NOTE: One person must be available to lift the device while another secures
the device to the rack.
CAUTION: If you are mounting multiple device on a rack, mount a device in
the bottom of the rack first and proceed to mount the rest of the devices from bottom to top.
To mount the device on two posts in a rack:
1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.
2. Place the device on a flat, stable surface.
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AC
!
DC
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AC
!
DC
Chapter 9: Unpacking and Mounting the Device
3. Align the mid-mounting brackets (part number 540-038665) with the holes on the
side panels of the device chassis, such that the mounting ears are in the center of the side panels. See Figure 22 on page 75.
4. Insert mounting screws into the aligned holes. Tighten the screws.
5. Have one person grasp both sides of the device, lift the device, and position it in the
rack, aligning the mounting ear holes with the threaded holes in the rack or cabinet rail. Align the bottom mounting ear hole in both the mounting brackets with a hole in each rack rail, making sure the chassis is level. See Figure 22 on page 75.
6. Have a second person secure the device to the rack by using the appropriate screws.
Tighten the screws.
7. Ensure that the device chassis is level by verifying that all screws on one side of the
rack are aligned with the screws on the other side.
Figure 22: Mounting the Device on Two Posts in a Rack
Related
Documentation
Rack-Mounting and Cabinet-Mounting Warnings on page 182
Connecting Earth Ground to QFX3600 or QFX3600-I Devices on page 82
Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 83
Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 86

Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet

You can front-mount or rear-mount a QFX3600 or QFX3600-I device on four posts in a 19-in. rack or cabinet by using the mounting brackets and installation blades provided with the device. (The remainder of this topic uses “rack” to mean “rack or cabinet.”) The front and rear rack rails must be spaced between 19.3 in. (49 cm) and 36 in. (91.4 cm) front to back.
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QFX3600 Device Hardware Documentation
You can also mount the device on two posts of a 19-in. rack or cabinet by using the mounting brackets provided with the device. See “Mounting a QFX3600 or QFX3600-I
Device on Two Posts in a Rack or Cabinet” on page 73.
The holes in the mounting brackets and installation blades are placed at 1 U (1.75 in., or
4.45cm.) apart so that the device can be mounted in any rack that provides holes spaced at that distance.
Before you begin mounting a QFX3600 or QFX3600-I device on the rack or cabinet:
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
“Prevention of Electrostatic Discharge Damage” on page 200.
Verify that the site meets the requirements described in “Site Preparation Checklist
for a QFX3600 or QFX3600-I Device” on page 43.
Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the building structure.
Read“General Site Guidelines” on page 45, with particular attention to “Chassis Lifting
Guidelines for a QFX3600 or QFX3600-I Device” on page 180.
Removethe device from the shipping carton(see “Unpacking a QFX3600 or QFX3600-I
Device” on page 72).
Ensure that you have the following parts and tools available to mount the device on four posts in a rack:
ESD grounding strap (provided).
One pair of mounting brackets (part number 540-038596) (provided).
One pair of rear installation blades (part number 540-038598). These installation blades support the rear of the chassis, and must be installed (provided).
6 Phillips 4x5-mm flat-head mounting screws (provided).
Eight screws to secure the chassis and rear installation blades to the rack (not provided).
Appropriate screwdriver for the mounting screws (not provided).
WARNING: QFX3600 and QFX3600-I devices must be supported at all four
corners. Mounting the chassis using only the front brackets damages the chassis and can result in serious bodily injury.
CAUTION: If you are installing the QFX3600 or QFX3600-I device above
60 in. (152.4 cm) from the floor, you must remove the power supplies and fan trays before attempting to install the device, or ask someone to assist you during the installation.
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CAUTION: If you are mounting multiple devices on a rack, mount the device
in the lowest position of the rack first, and proceed to mount the rest of the devices from bottom to top.
To mount the device on four posts in a rack:
1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.
2. Decide where to position the device in the rack.
3. Install the rear installation blades. See Figure 23 on page 77.
a. With two mounting screws—and cage nuts and washers if your rack requires
them—attach one of the rear installation blades to the left rear of the rack at the point where you want to mount the device. Tighten the screws.
b. Position the second rear installation blade at the desired position in the right rear
of the rack, so that it is on the same rack level as the left rear installation blade. If the right and left rear installation blades are not on the same level, the chassis will rest at an angle in the rack instead of resting flat and level.
c. With two mounting screws—and cage nuts and washers if your rack requires
them—attach the second rear installation blade to the right rear of the rack at the point where you want to mount the device. Tighten the screws.
Figure 23: Attaching the Installation Blades to the Rear of the Rack
4. Prepare the device for mounting.
a. Place the device on a flat, stable surface.
b. Align the mounting brackets along the front or rear of the side panels of the device
chassis depending on how you want to mount the device. For example, if you want to front-mount the device, align the brackets along the front of the side panel such that the mounting ears are in the front of the device chassis. See
Figure 24 on page 79.
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QFX3600 Device Hardware Documentation
c. Align the holes in the mounting brackets with holes on the side panels of the device
chassis.
d. Insert mounting screws into the aligned holes. Tighten the screws.
5. Mount the device.
a. Grasp both sides of the device, lift it, and position it in the rack so that the rear of
the chassis slides onto the installation blade. See Figure 24 on page 79.
b. Align the holes in the front bracketson the chassis with the holesin the rack.Ensure
that the chassis is level.
c. With four mounting screws—and cage nuts and washers if your rack requires
them—secure the front of the device to the rack. Tighten the screws.
TIP: If someone is assisting you, have one person stand at the rear of
the rack where the installation blade is installed, to help guide the device onto the installation blade.
d. Ensure that the device chassis is level by verifying that all screws on one side of
the rack are aligned with the screws on the other side.
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Figure 24: Mounting the Device on Four Posts
Related
Documentation
Rack-Mounting and Cabinet-Mounting Warnings on page 182
Connecting Earth Ground to QFX3600 or QFX3600-I Devices on page 82
Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 83
Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device on page 86
Configuring a QFX3600 Device as a Standalone Switch on page 103
79Copyright © 2017, Juniper Networks, Inc.
QFX3600 Device Hardware Documentation
Copyright © 2017, Juniper Networks, Inc.80
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