Juniper QFX5200 Installation instructions

QFX5200 Switch Hardware Guide
Release
15.1X53-D30–QFX5200
Modified: 2017-03-17
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, Junos, Steel-Belted Radius, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United
States and other countries. The Juniper Networks Logo, the Junos logo, and JunosE are trademarks of Juniper Networks, Inc. All other
trademarks, service marks, registered trademarks, or registered service marks are the 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.
QFX5200 Switch Hardware Guide
15.1X53-D30–QFX5200
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 OS has 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 to the terms and conditions of the End User License Agreement (“EULA”) posted at
http://www.juniper.net/support/eula.html. 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
AbouttheDocumentation............................................xiii
DocumentationandReleaseNotes.................................xiii
Supported Platforms............................................xiii
DocumentationConventions......................................xiii
DocumentationFeedback.........................................xv
RequestingTechnicalSupport.....................................xvi
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
OpeningaCasewithJTAC.....................................xvi
Part 1 Overview
Chapter1 SystemOverview...................................................3
QFX5200HardwareOverview..........................................3
QFX5200-32CHardware..........................................3
System Software ................................................4
QFX5200HardwareModels...........................................4
Understanding Hardware Redundancy of QFX5200 Components and
Functionality ....................................................5
Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
QFX5200 Chassis Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
QFX5200-32CPortPanel.............................................7
SwitchPorts....................................................8
Channelizing Interfaces ...........................................8
QFX5200Field-ReplaceableUnits......................................9
QFX5200 Access Port and Uplink Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
QFX5200ManagementPanel.........................................11
QFX5200ManagementPortLEDs......................................13
QFX5200ChassisStatusLEDs........................................14
Chapter3 CoolingSystemandAirflow.........................................17
QFX5200CoolingSystemandAirflow...................................17
FanModules....................................................17
Do Not Install Components with Different Airflow or Wattage in the
Switch.....................................................19
QFX5200FanModuleLED...........................................20
Chapter4 PowerSupply.....................................................23
QFX5200ACPowerSupply...........................................23
QFX5200DCPowerSupply...........................................25
QFX5200ACPowerSupplyLEDs......................................26
QFX5200DCPowerSupplyLEDs......................................27
iiiCopyright © 2017, Juniper Networks, Inc.

Part 2 Site Planning, Preparation, and Specifications
Chapter5 PreparationOverview..............................................31
QFX5200SitePreparationChecklist....................................31
QFX5200 Environmental Requirements and Specifications . . . . . . . . . . . . . . . . . 32
GeneralSiteGuidelines..............................................33
SiteElectricalWiringGuidelines.......................................34
QFX5200RackRequirements.........................................35
QFX5200CabinetRequirements......................................36
QFX5200 Clearance Requirements for Airflow and Hardware Maintenance . . . . 36
Chapter 6 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
QFX5200ACPowerSpecifications.....................................39
AC Power Cord Specifications for a QFX Series Device . . . . . . . . . . . . . . . . . . . . . 39
QFX5200DCPowerSpecifications.....................................41
QFX5200 Grounding Cable and Lug Specifications . . . . . . . . . . . . . . . . . . . . . . . . 41
Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Determining QFX5200 Optical Interface Support . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cable Specifications for QSFP+ and QSFP28 Transceivers . . . . . . . . . . . . . . . . . . 44
Cable Specifications for Console and Management Connections for the QFX
Series.........................................................46
Understanding QFX Series Fiber-Optic Cable Signal Loss, Attenuation, and
Dispersion .....................................................46
Signal Loss in Multimode and Single-Mode Fiber-Optic Cables . . . . . . . . . . . 47
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 47
Calculating the Fiber-Optic Cable Power Budget for a QFX Series Device . . . . . . 48
Calculating the Fiber-Optic Cable Power Margin for a QFX Series Device . . . . . . 48
Chapter8 Pinout Specifications ..............................................51
USB Port Specifications for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Console Port Connector Pinouts for the QFX Series . . . . . . . . . . . . . . . . . . . . . . . . 52
RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . 53
Part 3 Initial Installation and Configuration
Chapter 9 Unpacking and Mounting the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
InstallingandConnectingaQFX5200..................................57
UnpackingaQFX5200..............................................58
Mounting a QFX5200 in a Rack or Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
BeforeYouBeginRackInstallation.................................59
FourPostProcedure.............................................60
Chapter 10 Connecting the Switch to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Connecting Earth Ground to a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
ConnectingACPowertoaQFX5200...................................65
ConnectingDCPowertoaQFX5200...................................68
Copyright © 2017, Juniper Networks, Inc.iv
QFX5200 Switch Hardware Guide

Chapter 11 Connecting the Switch to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Connecting a Device to a Network for Out-of-Band Management . . . . . . . . . . . . 73
Connecting a Device to a Management Console by Using an RJ-45
Connector .....................................................74
Chapter 12 Performing Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
ConfiguringaQFX5200..............................................77
Part 4 Installing, Maintaining, and Replacing Components
Chapter 13 Replacing Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
InstallingaFanModuleinaQFX5200...................................81
Removing a Fan Module from a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Chapter14 Replacing Power Supplies .........................................85
Installing a Power Supply in a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Removing a Power Supply from a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Chapter 15 Replacing Transceivers and Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . . 89
RemovingaTransceiver..............................................89
InstallingaTransceiver..............................................92
Disconnecting a Fiber-Optic Cable from a Device . . . . . . . . . . . . . . . . . . . . . . . . . 94
ConnectingaFiber-OpticCable.......................................95
MaintainingFiber-OpticCables.......................................96
Chapter16 RemovingtheDevice..............................................99
Installing and Removing QFX5200 Hardware Components . . . . . . . . . . . . . . . . . 99
PoweringOffaQFX5200............................................100
Removing a QFX5200 from a Rack or Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Chapter 17 Contacting Customer Support and Returning the Chassis or
Components ....................................................105
Contacting Customer Support to Obtain Return Material Authorization . . . . . . . 105
Locating the Serial Number on a QFX5200 Device or Component . . . . . . . . . . . 106
Listing the Chassis and Component Details Using the CLI . . . . . . . . . . . . . . 106
Locating the Chassis Serial Number ID Label on a QFX5200 . . . . . . . . . . . . 107
Locating the Serial Number ID Labels on FRU Components . . . . . . . . . . . . . 108
Contacting Customer Support to Obtain a Return Materials Authorization for a
QFXSeriesDeviceorComponent.................................108
Packing an QFX5200 Device or Component for Shipping . . . . . . . . . . . . . . . . . . . 110
Packing a QFX5200 Switch for Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Packing QFX5200 Components for Shipping . . . . . . . . . . . . . . . . . . . . . . . . . 111
Part 5 Troubleshooting
Chapter18 Restoring JunosOS...............................................115
CreatinganEmergencyBootDevice....................................115
Performing a Recovery Installation Using an Emergency Boot Device . . . . . . . . . 117
vCopyright © 2017, Juniper Networks, Inc.
Table of Contents

Chapter19 AlarmMessages..................................................119
Understanding Alarms ..............................................119
InterfaceAlarmMessages...........................................120
Chassis Alarm Messages on QFX5100, QFX5110, and QFX5200 Switches . . . . . . 121
Part 6 Safety and Compliance Information
Chapter 20 General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Definitions of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
QualifiedPersonnelWarning.........................................130
Warning Statement for Norway and Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Chapter21 FireSafetyRequirements..........................................133
FireSafetyRequirements............................................133
Chapter 22 Installation Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 135
InstallationInstructionsWarning......................................135
Chassis Lifting Guidelines for a QFX5200 Device . . . . . . . . . . . . . . . . . . . . . . . . . 136
RestrictedAccessWarning...........................................136
RampWarning ....................................................138
Rack-Mounting and Cabinet-Mounting Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 138
GroundedEquipmentWarning........................................142
Chapter 23 Radiation and Laser Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . 145
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Laser and LED Safety Guidelines and Warnings for the QFX Series . . . . . . . . . . . 146
Class1MLaserProductWarning...................................146
Class1MLaserRadiationWarning..................................147
Unterminated Fiber-Optic Cable Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Chapter 24 Maintenance and Operational Safety Warnings . . . . . . . . . . . . . . . . . . . . . . 149
Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . . . . . . 149
BatteryHandlingWarning........................................149
JewelryRemovalWarning........................................150
LightningActivityWarning........................................151
OperatingTemperatureWarning...................................152
ProductDisposalWarning........................................153
Chapter 25 Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . 155
Prevention of Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Action to Take After an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
ACPowerDisconnectionWarning.....................................159
DC Power Electrical Safety Guidelines for Switches . . . . . . . . . . . . . . . . . . . . . . . 160
DCPowerDisconnectionWarning.....................................163
DC Power Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . 164
DCPowerWiringSequenceWarning...................................165
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . 168
Copyright © 2017, Juniper Networks, Inc.vi
QFX5200 Switch Hardware Guide

TNPowerWarning.................................................168
Chapter 26 Agency Approvals and Compliance Statements . . . . . . . . . . . . . . . . . . . . . . 171
AgencyApprovalsfortheQFXSeries...................................171
Compliance Statements for EMC Requirements for the QFX Series . . . . . . . . . . 172
Canada.......................................................172
EuropeanCommunity...........................................173
Israel.........................................................173
Japan ........................................................173
Korea.........................................................173
UnitedStates..................................................174
Nonregulatory Environmental Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
viiCopyright © 2017, Juniper Networks, Inc.
Table of Contents

Copyright © 2017, Juniper Networks, Inc.viii
QFX5200 Switch Hardware Guide

List of Figures
Part 1 Overview
Chapter1 SystemOverview...................................................3
Figure1:QFX5200-32CPortPanel......................................4
Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure2:QFX5200-32CPortPanel......................................8
Figure3:QFX5200Switch,FRUEnd.....................................11
Figure 4: Management Panel Components on QFX5200 . . . . . . . . . . . . . . . . . . . . 12
Figure 5: Management Port LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . 13
Figure 6: Chassis Status LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter3 CoolingSystemandAirflow.........................................17
Figure7:QFX5200FanModules.......................................18
Figure 8: Air In Airflow Through QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 9: Air Out Airflow Through 1 U QFX5200 Switch Chassis . . . . . . . . . . . . . . . 19
Figure 10: Fan Module LED in a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Chapter4 PowerSupply.....................................................23
Figure 11: AC Power Supply in QFX5200 Switches . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 12: Power Supply Handle Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 13: DC Power Supply for QFX5200 Devices . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 14: DC Power Supply Faceplate in QFX5200 Devices . . . . . . . . . . . . . . . . . 26
Figure 15: AC Power Supply LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . 27
Figure 16: DC Power Supply Faceplate on a QFX5200 Switch . . . . . . . . . . . . . . . . 28
Part 2 Site Planning, Preparation, and Specifications
Chapter5 PreparationOverview..............................................31
Figure 17: Clearance Requirements for Airflow and Hardware Maintenance for a
QFX5200......................................................37
Part 3 Initial Installation and Configuration
Chapter 9 Unpacking and Mounting the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 18: Attaching Mounting Rails to the QFX5200-32C . . . . . . . . . . . . . . . . . . . 61
Figure 19: Attach QFX5200-32C Switch to Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 20: Slide Mounting Blade into Mounting Rail . . . . . . . . . . . . . . . . . . . . . . . . 62
Chapter 10 Connecting the Switch to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure 21: Connecting a Grounding Cable to a QFX5200-32C . . . . . . . . . . . . . . . . 65
Figure 22: Connecting an AC Power Cord to an AC Power Supply in a
QFX5200-32C..................................................67
ixCopyright © 2017, Juniper Networks, Inc.

Figure 23: DC Power Supply Faceplate for a QFX5200 . . . . . . . . . . . . . . . . . . . . . 70
Figure 24: Securing Ring Lugs to the Terminals on the QFX5200 DC Power
Supply.........................................................71
Chapter 11 Connecting the Switch to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 25: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 26: Connecting a Device to a Network for Out-of-Band Management . . . . 74
Figure 27: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 28: Connecting a Device to a Management Console Through a Console
Server.........................................................75
Figure 29: Connecting a Device Directly to a Management Console . . . . . . . . . . . 75
Part 4 Installing, Maintaining, and Replacing Components
Chapter 13 Replacing Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 30: Installing a Fan Module in a QFX5200-32C . . . . . . . . . . . . . . . . . . . . . . 82
Figure 31: Removing a Fan Module from a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . 83
Chapter14 Replacing Power Supplies .........................................85
Figure 32: Installing a Power Supply in a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 33: Removing a Power Supply from a QFX5200 . . . . . . . . . . . . . . . . . . . . . 88
Chapter 15 Replacing Transceivers and Fiber-Optic Cables . . . . . . . . . . . . . . . . . . . . . . . 89
Figure 34: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver . . . . . . . . . . . . . 91
Figure35:InstallingaTransceiver......................................94
Figure 36: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed in
aDevice.......................................................95
Chapter 17 Contacting Customer Support and Returning the Chassis or
Components ....................................................105
Figure 37: Location of the Serial Number ID Label on a QFX5200-32C Switch . . 108
Part 6 Safety and Compliance Information
Chapter 25 Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Figure 38: Placing a Component into an Antistatic Bag . . . . . . . . . . . . . . . . . . . . 157
Copyright © 2017, Juniper Networks, Inc.x
QFX5200 Switch Hardware Guide

List of Tables
AbouttheDocumentation.........................................xiii
Table1:NoticeIcons.................................................xiv
Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Part 1 Overview
Chapter1 SystemOverview...................................................3
Table 3: QFX5200 Hardware-only Product Numbers . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4: Physical Specifications for the QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table5:FRUsinaQFX5200Switch.....................................9
Table 6: QFX5200 Access Port and Uplink LED Locations . . . . . . . . . . . . . . . . . . . 10
Table 7: Network Port LEDs on QSFP28 Ports on a QFX5200 Switch . . . . . . . . . . 10
Table 8: Network Port Link/Activity LEDs on QSFP+ Ports on a QFX5200 . . . . . . . 11
Table 9: Management Port LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . . 13
Table 10: Chassis Status LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter3 CoolingSystemandAirflow.........................................17
Table 11: Fan Modules in QFX5200 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 12: Fan Tray LED in a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Chapter4 PowerSupply.....................................................23
Table 13: Airflow Direction in QFX5200 AC Power Supplies . . . . . . . . . . . . . . . . . . 24
Table 14: AC Power Supply LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . . 27
Table 15: DC Power Supply LEDs on a QFX5200 Switch . . . . . . . . . . . . . . . . . . . . 28
Part 2 Site Planning, Preparation, and Specifications
Chapter5 PreparationOverview..............................................31
Table16:SitePreparationChecklist.....................................31
Table 17: QFX5200 Switch Environmental Tolerances . . . . . . . . . . . . . . . . . . . . . . 32
Table 18: Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 19: Rack Requirements for the QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 20: Cabinet Requirements for the QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . 36
Chapter 6 Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 21: AC Power Specifications for a QFX5200-32C . . . . . . . . . . . . . . . . . . . . . 39
Table 22: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 23: DC Power Specifications for a QFX5200 . . . . . . . . . . . . . . . . . . . . . . . . . 41
Chapter 7 Transceiver and Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table24:QSFP+MPOCableSignals...................................44
xiCopyright © 2017, Juniper Networks, Inc.

Table 25: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts . . . . . . . . . . . . . . . . 45
Table 26: Cable Specifications for Console and Management Connections for
theQFXSeries.................................................46
Table 27: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . . 49
Chapter8 Pinout Specifications ..............................................51
Table 28: Console Port Connector Pinouts for the QFX Series . . . . . . . . . . . . . . . . 52
Table 29: RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . 53
Part 3 Initial Installation and Configuration
Chapter 9 Unpacking and Mounting the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Table 30: Inventory of Components Supplied with a QFX5200 Device . . . . . . . . 58
Part 5 Troubleshooting
Chapter19 AlarmMessages..................................................119
Table 31: Alarm Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Table32:ChassisAlarmMessages.....................................121
Copyright © 2017, Juniper Networks, Inc.xii
QFX5200 Switch Hardware Guide

About the Documentation
•Documentation and Release Notes on page xiii
•Supported Platforms on page xiii
•Documentation Conventions on page xiii
•Documentation Feedback on page xv
•Requesting Technical Support on page xvi
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:
•QFX5200
Documentation Conventions
Table 1 on page xiv defines notice icons used in this guide.
xiiiCopyright © 2017, Juniper Networks, Inc.

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
Alerts you to a recommended use or implementation.Best practice
Table 2 on page xiv defines the text and syntax conventions used in this guide.
Table 2: Text and Syntax Conventions
ExamplesDescriptionConvention
To enter configuration mode, type the
configure command:
user@host> configure
Represents text that you type.Bold text like this
user@host> show chassis alarms
No alarms currently active
Represents output that appears on the
terminal screen.
Fixed-width text like this
•A policy term is a named structure
that defines match conditions and
actions.
•Junos OS CLI User Guide
•RFC 1997, BGP Communities Attribute
•Introduces or emphasizes important
new terms.
•Identifies guide names.
•Identifies RFC and Internet draft titles.
Italic text like this
Configure the machine’s domain name:
[edit]
root@# set system domain-name
domain-name
Represents variables (options for which
you substitute a value) in commands or
configuration statements.
Italic text like this
Copyright © 2017, Juniper Networks, Inc.xiv
QFX5200 Switch Hardware Guide

Table 2: Text and Syntax Conventions (continued)
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.
Represents names of configuration
statements, commands, files, and
directories; configuration hierarchy levels;
or labels on routing platform
components.
Text like this
stub <default-metric metric>;Encloses optional keywords or variables.< > (angle brackets)
broadcast | multicast
(string1 |string2 |string3)
Indicates a choice between the mutually
exclusive keywords or variables on either
side of the symbol. The set of choices is
often enclosed in parentheses for clarity.
| (pipe symbol)
rsvp { # Required for dynamic MPLS onlyIndicates a comment specified on the
same line as the configuration statement
to which it applies.
# (pound sign)
community name members [
community-ids ]
Encloses a variable for which you can
substitute one or more values.
[ ] (square brackets)
[edit]
routing-options {
static {
route default {
nexthop address;
retain;
}
}
}
Identifies a level in the configuration
hierarchy.
Indention and braces ( { } )
Identifies a leaf statement at a
configuration hierarchy level.
; (semicolon)
GUI Conventions
•In the Logical Interfaces box, select
All Interfaces.
•To cancel the configuration, click
Cancel.
Represents graphical user interface (GUI)
items you click or select.
Bold text like this
In the configuration editor hierarchy,
select Protocols>Ospf.
Separates levels in a hierarchy of menu
selections.
>(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 rate the 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/.
xvCopyright © 2017, Juniper Networks, Inc.
About the Documentation

•E-mail—Send your comments to [e-mail]. Include the document
or topic name, URL or page number, and software version (if applicable).
Requesting Technical Support
Technical product support is available through the Juniper Networks Technical 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:
•Find CSC offerings: http://www.juniper.net/customers/support/
•Search for known bugs: http://www2.juniper.net/kb/
•Find product documentation: http://www.juniper.net/techpubs/
•Find solutions and answer questions using our Knowledge Base: http://kb.juniper.net/
•Download the latest versions of software and review release notes:
http://www.juniper.net/customers/csc/software/
•Search technical bulletins for relevant hardware and software notifications:
http://kb.juniper.net/InfoCenter/
•Join and participate in the Juniper Networks Community Forum:
http://www.juniper.net/company/communities/
•Open a case online in the CSC Case Management tool: http://www.juniper.net/cm/
To verify service entitlement by product serial number, use our Serial Number Entitlement
(SNE) Tool: https://tools.juniper.net/SerialNumberEntitlementSearch/
Opening a Case with JTAC
You can open a case with JTAC on the Web or by telephone.
•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.xvi
QFX5200 Switch Hardware Guide

For international or direct-dial options in countries without toll-free numbers, see
http://www.juniper.net/support/requesting-support.html.
xviiCopyright © 2017, Juniper Networks, Inc.
About the Documentation

Copyright © 2017, Juniper Networks, Inc.xviii
QFX5200 Switch Hardware Guide

PART 1
Overview
•System Overview on page 3
•Chassis Components and Descriptions on page 7
•Cooling System and Airflow on page 17
•Power Supply on page 23
1Copyright © 2017, Juniper Networks, Inc.

Copyright © 2017, Juniper Networks, Inc.2
QFX5200 Switch Hardware Guide