Juniper EX4600 Installation instructions

EX4600 Switch Hardware Guide
Modified: 2019-03-06
Copyright © 2019, Juniper Networks, Inc.

Juniper Networks, Inc.
1133 Innovation Way
Sunnyvale, California 94089
USA
408-745-2000
www.juniper.net
Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered trademarks of Juniper Networks, Inc. in the United States
and other countries. All other trademarks, service marks, registered marks, 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.
EX4600 Switch Hardware Guide
Copyright © 2019 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
https://support.juniper.net/support/eula/. By downloading, installing or using such software, you agree to the terms and conditions of
that EULA.
Copyright © 2019, Juniper Networks, Inc.ii

Table of Contents
AbouttheDocumentation............................................xi
DocumentationandReleaseNotes..................................xi
DocumentationConventions.......................................xi
DocumentationFeedback........................................xiii
RequestingTechnicalSupport.....................................xiv
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Creating a Service Request with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Chapter1 Overview .........................................................17
EX4600SystemOverview............................................17
EX4600SwitchHardwareOverview.................................17
EX4600Hardware...........................................18
SystemSoftware............................................19
EX4600SwitchModels..........................................19
Understanding Redundancy of EX4600 Switch Components and
Functionality ...............................................20
EX4600 Chassis ...................................................20
Chassis Physical Specifications for an EX4650 Switch . . . . . . . . . . . . . . . . . . 21
Field-Replaceable Units in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 21
PortPanelofanEX4600Switch...................................22
Access Port and Uplink Port LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . 23
Management Panel of an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chassis Status LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 26
ExpansionModulesfortheEX4600................................28
EX4600-EM-8F.............................................29
QFX-EM-4Q................................................30
EX4600CoolingSystem.............................................30
Cooling System and Airflow in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . 31
FanModules................................................31
Do Not Install Components with Different Airflow or Wattage in the
Switch.................................................34
FanModuleStatus...........................................35
Fan Module LED on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
EX4600PowerSystem..............................................36
AC Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
AC Power Supply LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . 38
AC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 39
AC Power Cord Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . 39
DC Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DC Power Supply LEDs in EX4650 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 43
iiiCopyright © 2019, Juniper Networks, Inc.

Grounding Cable and Lug Specifications for an EX4600 Switch . . . . . . . . . . 43
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 45
Site Preparation Checklist for an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 45
EX4600 Site Guidelines and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Environmental Requirements and Specifications for EX Series Switches . . . 46
GeneralSiteGuidelines...........................................51
SiteElectricalWiringGuidelines....................................51
RackRequirements..............................................52
CabinetRequirements...........................................53
Clearance Requirements for Airflow and Hardware Maintenance for an
EX4600Switch.............................................53
EX4600 Network Cable and Transceiver Planning . . . . . . . . . . . . . . . . . . . . . . . . 54
Determining Interface Support for an EX4600 Switch . . . . . . . . . . . . . . . . . . 54
Cable Specifications for QSFP+ Transceivers on EX4600 Series
Switches...................................................55
Network Cable Specifications for EX4600 Switches . . . . . . . . . . . . . . . . . . . 57
Understanding EX Series Switches Fiber-Optic Cable Signal Loss,
Attenuation,andDispersion...................................57
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . 58
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . 58
Calculating the EX Series Switch Fiber-Optic Cable Power Budget . . . . . . . . 59
Calculating the EX Series Switch Fiber-Optic Cable Power Margin . . . . . . . . 59
EX4600 Management Cable Specifications and Pinouts . . . . . . . . . . . . . . . . . . . 61
Cable Specifications for Console and Management Connections for the
EX4600 ...................................................61
USB Port Specifications for an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . . 61
Console Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . . . . . . 62
RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . . . . 63
Chapter 3 Initial Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Unpacking and Mounting an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Installing and Connecting an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 65
UnpackinganEX4600Switch.....................................66
Mounting an EX4600 Switch in a Rack or Cabinet . . . . . . . . . . . . . . . . . . . . . 67
Before You Begin Rack Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
FourPostProcedure.........................................69
ConnectingtheEX4600toPower.....................................70
Connecting Earth Ground to an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 71
Connecting AC Power to an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Connecting DC Power to an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Connecting the EX4600 to Management Devices . . . . . . . . . . . . . . . . . . . . . . . . . 78
Connecting a Device to a Network for Out-of-Band Management . . . . . . . . . 78
Connecting a Device to a Management Console by Using an RJ-45
Connector..................................................79
Connecting EX4600 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . 80
ConfiguringJunosOSontheEX4600...................................81
Copyright © 2019, Juniper Networks, Inc.iv
EX4600 Switch Hardware Guide

Chapter4 MaintainingComponents..........................................85
Maintaining the EX4600 Switch Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . 85
Removing a Fan Module from an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . 85
Installing a Fan Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . 86
Maintaining the EX4600 Switch Power System . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Removing a Power Supply from an EX4600 Switch . . . . . . . . . . . . . . . . . . . . 88
Installing a Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 89
Maintaining the Expansion Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . . 91
Removing an Expansion Module from an EX4600 Switch . . . . . . . . . . . . . . . 91
Installing an Expansion Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . 92
MaintainingTransceivers.............................................94
RemovingaTransceiver..........................................94
InstallingaTransceiver...........................................97
MaintainingFiber-OpticCables.......................................99
ConnectingaFiber-OpticCable....................................99
Disconnecting a Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
MaintainingFiber-OpticCables....................................101
RemovingtheEX4600Switch........................................102
Installing and Removing EX4600 Switch Hardware Components . . . . . . . . 102
PoweringOffanEX4600Switch..................................103
Removing an EX4600 Switch from a Rack or Cabinet . . . . . . . . . . . . . . . . . 105
Chapter5 Troubleshooting Hardware ........................................107
Troubleshooting the EX4600 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Understanding Alarm Types and Severity Levels on EX Series Switches . . . 107
InterfaceAlarmMessages.......................................108
Creating an Emergency Boot Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Performing a Recovery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Chapter 6 Contacting Customer Support and Returning the Chassis or
Components .....................................................113
Returning an EX4600 Chassis or Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Returning an EX4600 Switch or Component for Repair or Replacement . . . 113
Locating the Serial Number on an EX4600 Switch or Component . . . . . . . . 114
Listing the Chassis and Component Details Using the CLI . . . . . . . . . . . 114
Locating the Chassis Serial Number ID Label on an EX4600 Switch . . . 115
Locating the Serial Number ID Labels on FRU Components . . . . . . . . . . 115
Contacting Customer Support to Obtain Return Material Authorization . . . . 116
Packing an EX4600 Switch or Component for Shipping . . . . . . . . . . . . . . . . 116
Packing an EX4600 Switch for Shipping . . . . . . . . . . . . . . . . . . . . . . . . . 117
Packing EX4600 Switch Components for Shipping . . . . . . . . . . . . . . . . 118
Chapter 7 Safety and Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
DefinitionsofSafetyWarningLevels....................................121
QualifiedPersonnelWarning.........................................122
Warning Statement for Norway and Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
FireSafetyRequirements............................................123
FireSuppression................................................123
FireSuppressionEquipment......................................123
vCopyright © 2019, Juniper Networks, Inc.
Table of Contents

InstallationInstructionsWarning......................................124
Chassis and Component Lifting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
RestrictedAccessWarning...........................................125
Ramp Warning ....................................................126
Rack-Mounting and Cabinet-Mounting Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 127
GroundedEquipmentWarning........................................131
Laser and LED Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
GeneralLaserSafetyGuidelines...................................132
Class1LaserProductWarning.....................................132
Class1LEDProductWarning......................................132
LaserBeamWarning............................................133
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . . . . . . 134
BatteryHandlingWarning........................................135
JewelryRemovalWarning........................................136
LightningActivityWarning........................................137
OperatingTemperatureWarning...................................137
ProductDisposalWarning........................................139
General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . 139
Action to Take After an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Prevention of Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
ACPowerDisconnectionWarning.....................................143
DC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
DCPowerDisconnectionWarning.....................................144
DC Power Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . . 145
DCPowerWiringSequenceWarning...................................146
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . 149
TNPowerWarning.................................................150
Agency Approvals for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Compliance Statements for EMC Requirements for EX Series Switches . . . . . . . 151
Canada .......................................................151
Taiwan .......................................................152
EuropeanCommunity...........................................152
Israel.........................................................152
Japan ........................................................153
Korea ........................................................153
UnitedStates..................................................153
FCCPart15Statement..........................................153
Nonregulatory Environmental Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Compliance Statements for Acoustic Noise for EX Series Switches . . . . . . . . . . 155
Statements of Volatility for Juniper Network Devices . . . . . . . . . . . . . . . . . . . . . . 155
Copyright © 2019, Juniper Networks, Inc.vi
EX4600 Switch Hardware Guide

List of Figures
Chapter1 Overview .........................................................17
Figure 1: EX4600 Port Panel with Expansion Bays . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 2: QFX-EM-4Q Expansion Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 3: EX4600-EM-8F Expansion Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure4:EX4600SwitchPortPanel....................................23
Figure5:LEDsontheSFP+Ports......................................23
Figure6:LEDsontheQSFP+Ports.....................................23
Figure 7: EX4600 Switch, FRU Side with Fans Modules and Power Supplies
Installed.......................................................25
Figure 8: Management Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 9: Chassis Status LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 10: EX4600-EM-8F Faceplate and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 11: QFX-EM-4Q Faceplate and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 12: Fan Module for EX4600 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 13: Air In Airflow Through EX4600 Switch Chassis . . . . . . . . . . . . . . . . . . . 33
Figure 14: Air Out Airflow Through EX4600 Switch Chassis . . . . . . . . . . . . . . . . . . 34
Figure 15: Fan Module LED in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 16: AC Power Supply in EX4600 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure17:PowerSupplyHandleDetail...................................37
Figure 18: AC Power Supply LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . 38
Figure 19: DC Power Supply in EX4600 and QFX5100 Switches . . . . . . . . . . . . . . 41
Figure 20: DC Power Supply Faceplate in EX4600 Switches . . . . . . . . . . . . . . . . . 41
Figure 21: DC Power Supply Faceplate on an EX4650 Switch . . . . . . . . . . . . . . . . 42
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 22: Clearance Requirements for Airflow and Hardware Maintenance for
aEX4600Switch...............................................54
Figure23:PortPanelofEX4600.......................................55
Chapter 3 Initial Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Figure 24: Attaching Mounting Rails to the EX4600 . . . . . . . . . . . . . . . . . . . . . . . 69
Figure 25: Attach EX4600 Switch to Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Figure 26: Slide Mounting Blade into EX4600 Mounting Rail . . . . . . . . . . . . . . . . 70
Figure 27: Connecting a Grounding Cable to an EX4600 Switch . . . . . . . . . . . . . . 72
Figure 28: Connecting an AC Power Cord to an AC Power Supply in an EX4600
Switch ........................................................73
Figure 29: DC Power Supply Faceplate for an EX4600 Switch . . . . . . . . . . . . . . . . 77
Figure 30: Securing Ring Lugs to the Terminals on the EX4600 DC Power
Supply ........................................................78
Figure 31: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 32: Connecting a Device to a Network for Out-of-Band Management . . . . 79
viiCopyright © 2019, Juniper Networks, Inc.

Figure 33: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 34: Connecting a Device to a Management Console Through a Console
Server ........................................................80
Figure 35: Connecting a Device Directly to a Management Console . . . . . . . . . . . 80
Figure 36: Four Member Virtual Chassis with EX4600 Master and Backup . . . . . . 81
Chapter4 MaintainingComponents..........................................85
Figure 37: Removing a Fan Module from an EX4600 Switch . . . . . . . . . . . . . . . . . 86
Figure 38: Installing a Fan Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . 87
Figure 39: Removing a Power Supply from an EX4600 Switch . . . . . . . . . . . . . . . 89
Figure 40: Installing a Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . 90
Figure 41: Removing a QFX-EM-4Q Expansion Module from an EX4600
Switch ........................................................92
Figure 42: Installing a QFX4Q Expansion Module in an EX4600 Switch . . . . . . . . 94
Figure 43: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver . . . . . . . . . . . . . 96
Figure44:InstallingaTransceiver......................................99
Figure 45: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed in
aDevice......................................................100
Chapter 6 Contacting Customer Support and Returning the Chassis or
Components .....................................................113
Figure 46: Location of the Serial Number ID Label on an EX4600 Switch . . . . . . 115
Chapter 7 Safety and Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Figure 47: Placing a Component into an Antistatic Bag . . . . . . . . . . . . . . . . . . . . . 141
Copyright © 2019, Juniper Networks, Inc.viii
EX4600 Switch Hardware Guide

List of Tables
AbouttheDocumentation..........................................xi
Table1:NoticeIcons.................................................xii
Table2:TextandSyntaxConventions...................................xii
Chapter1 Overview .........................................................17
Table3:EX4600Switches............................................19
Table 4: Physical Specifications for the EX4600 Switch Chassis . . . . . . . . . . . . . . 21
Table5:FRUsinaEX4600Switch......................................21
Table 6: Network Port LEDs on SFP+ Ports on an EX4600 Switch . . . . . . . . . . . . 24
Table 7: Network Port LEDs on QSFP+ Ports on an EX4600 Switch . . . . . . . . . . . 24
Table 8: Chassis Status LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 28
Table9:EX4600-EM-8FStatusLED...................................30
Table 10: Expansion Module Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 11: Fan Modules for EX4600 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table12:FanModuleLED............................................35
Table 13: Fan Tray LED in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 14: Airflow Direction in EX4600 and QFX5100 AC Power Supplies . . . . . . . 38
Table 15: AC Power Supply LEDs on a EX4600 Switch . . . . . . . . . . . . . . . . . . . . . 38
Table 16: AC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . 39
Table 17: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 18: DC Power Supply LEDs on an EX4650 Switch . . . . . . . . . . . . . . . . . . . . 42
Table 19: DC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . 43
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 45
Table20:SitePreparationChecklist....................................45
Table 21: EX Series Switch Environmental Tolerances . . . . . . . . . . . . . . . . . . . . . . 47
Table 22: Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 23: Rack Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 24: Cabinet Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . 53
Table25:QSFP+MPOCableSignals...................................56
Table 26: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts . . . . . . . . . . . . . . . . 56
Table 27: Cable Specifications for Switch-to-Management-Device
Connections ...................................................57
Table 28: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . 60
Table 29: Cable Specifications for Console and Management Connections for
theQFXSeries..................................................61
Table 30: Console Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . . 62
Table 31: RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . 63
Chapter 3 Initial Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Table 32: Inventory of Components Supplied with an EX4600 Switch . . . . . . . . . 67
ixCopyright © 2019, Juniper Networks, Inc.

Chapter5 Troubleshooting Hardware ........................................107
Table33:AlarmTerms..............................................107
Copyright © 2019, Juniper Networks, Inc.x
EX4600 Switch Hardware Guide

About the Documentation
•Documentation and Release Notes on page xi
•Documentation Conventions on page xi
•Documentation Feedback on page xiii
•Requesting Technical Support on page xiv
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
https://www.juniper.net/documentation/.
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 https://www.juniper.net/books.
Documentation Conventions
Table 1 on page xii defines notice icons used in this guide.
xiCopyright © 2019, 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 xii 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 © 2019, Juniper Networks, Inc.xii
EX4600 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 so that we can improve our documentation. You
can use either of the following methods:
•Online feedback system—Click TechLibrary Feedback, on the lower right of any page
on the Juniper Networks TechLibrary site, and do one of the following:
xiiiCopyright © 2019, Juniper Networks, Inc.
About the Documentation

•Click the thumbs-up icon if the information on the page was helpful to you.
•Click the thumbs-down icon if the information on the page was not helpful to you
or if you have suggestions for improvement, and use the pop-up form to provide
feedback.
•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
https://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.
•Product warranties—For product warranty information, visit
https://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: https://www.juniper.net/customers/support/
•Search for known bugs: https://prsearch.juniper.net/
•Find product documentation: https://www.juniper.net/documentation/
•Find solutions and answer questions using our Knowledge Base: https://kb.juniper.net/
•Download the latest versions of software and review release notes:
https://www.juniper.net/customers/csc/software/
•Search technical bulletins for relevant hardware and software notifications:
https://kb.juniper.net/InfoCenter/
Copyright © 2019, Juniper Networks, Inc.xiv
EX4600 Switch Hardware Guide

•Join and participate in the Juniper Networks Community Forum:
https://www.juniper.net/company/communities/
•Create a service request online: https://myjuniper.juniper.net
To verify service entitlement by product serial number, use our Serial Number Entitlement
(SNE) Tool: https://entitlementsearch.juniper.net/entitlementsearch/
Creating a Service Request with JTAC
You can create a service request with JTAC on the Web or by telephone.
•Visit https://myjuniper.juniper.net.
•Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).
For international or direct-dial options in countries without toll-free numbers, see
https://support.juniper.net/support/requesting-support/.
xvCopyright © 2019, Juniper Networks, Inc.
About the Documentation

Copyright © 2019, Juniper Networks, Inc.xvi
EX4600 Switch Hardware Guide

CHAPTER 1
Overview
•EX4600 System Overview on page 17
•EX4600 Chassis on page 20
•EX4600 Cooling System on page 30
•EX4600 Power System on page 36
EX4600 System Overview
•EX4600 Switch Hardware Overview on page 17
•EX4600 Switch Models on page 19
•Understanding Redundancy of EX4600 Switch Components and
Functionality on page 20
EX4600 Switch Hardware Overview
The Juniper Networks EX4600 Ethernet switch is a highly versatile, second generation
solution for campus environments. The EX4600 can be deployed in these environments:
•Campus distribution
•Small campus core
•Top-of-rack in small, low -density data centers
•Data center distribution in small, low -density data centers
In addition to operating as a standalone switch, the EX4600 switch can act as a member
switch in a non-mixed Virtual Chassis, a Virtual Chassis composed entirely of EX4600
switches, as well as participate as member switches in a mixed Virtual Chassis with
EX4300 switches. The switch offers a flexible configuration of high-performance
10-gigabit and 40-gigabit ports to add higher port densities, additional scalability, and
improved latency to the EX Series of switches.
This topic covers:
•EX4600 Hardware on page 18
•System Software on page 19
17Copyright © 2019, Juniper Networks, Inc.

EX4600 Hardware
The EX4600 switch is a compact 1 U model that provides wire-speed packet performance,
very low latency, and a rich set of Layer 2 and Layer 3 features. In addition to a
high-throughput Packet Forwarding Engine, the performance of the control plane running
on the EX4600 model is enhanced by the 1.5 -GHz dual-core Intel CPU with 8 GB of
memory and 32 GB of solid-state drive (SSD) storage.
The port panel of the EX4600 features 24 fixed small form-factor pluggable (SFP) or
SFP+ access ports and 4 fixed quad SFP+ (QSFP+) high-speed uplinks.
Figure 1: EX4600 Port Panel with Expansion Bays
1
In addition, the switch has two module bays where you can install optional expansion
modules. The EX4600 switch supports two expansion modules to increase port density:
•QFX-EM-4Q–Adds four additional QSFP+ ports to the chassis. When fully populated
with QFX-EM-4Q expansion modules, the EX4600 is equivalent to one with 72
interfaces (24 + 16 + 16 + 16). See Figure 2 on page 18.
Figure 2: QFX-EM-4Q Expansion Module
•EX4600-EM-8F–Adds a total of eight additional SFP+ ports to the chassis. When fully
populated with EX4600-EM-8F expansion modules, the EX4600 is equivalent to one
with 56 interfaces (24 + 16 + 8 + 8). See Figure 3 on page 18.
Figure 3: EX4600-EM-8F Expansion Module
The EX4600 switch can be used as:
Copyright © 2019, Juniper Networks, Inc.18
EX4600 Switch Hardware Guide

•A standalone switch.
•A master, backup, or linecard member in a Virtual Chassis with EX4600 switches or
EX4300 switches. When in a mixed Virtual Chassis consisting of EX4600 switches
and EX4300 switches, the EX4600 switches can be the master, backup, or in the
linecard role, while the EX4300 switches must be in the linecard role. An EX4600
Virtual Chassis enables you to interconnect up to 10 switches into one logical device
and manage the device as a single chassis. An EX4600 Virtual Chassis is cabled in a
ring topology.
In a mixed Virtual Chassis of EX4600 and EX4300 switches, the Junos OS release
dictates whether the EX4600 is best used in the master role. For Junos OS releases
between 13.2X50-D10 and 14.1X53-D25, use the use the EX4300 as a master and
backup RE in the Virtual Chassis. For Junos OS Release 14.1X53-D25 and later, the
EX4600 is fully supported as the master in a mixed Virtual Chassis of EX4600 and
EX4300.
System Software
EX Series switches run the Junos operating system (OS), which provides Layer 2 and
Layer 3 switching, routing, and security services. An EX4600 switch ships with Junos OS
installed on it. The same Junos OS code base that runs on EX4600 switches also runs
on all Juniper Networks QFX Series devices, M Series, MX Series, and T Series routers.
You manage the switch by using the Junos OS CL), which is accessible through the console
and out-of-band management ports on the switch.
All models of the EX4600 run on Junos OS Release 13.2X51-D25 or later.
EX4600 Switch Models
The EX4600 switches have a base configuration of 24 small form-factor pluggable plus
(SFP+) ports and 4 quad small-form-factor pluggable (QSFP+) ports. You can increase
the number of ports by using expansion modules. All EX4600 switches, except the
EX4600-40F-S switch, ship with two power supplies and five fans installed by default.
Expansion modules are optional components that must be separately ordered.
Table 3 on page 19 lists the EX4600 switch configurations.
Table 3: EX4600 Switches
AirflowPower Supply
Number of
Expansion
Modules
SupportedPortsProduct Number
Air In (FRU-to-port)AC224 SFP+ and 4 QSFP+EX4600-40F-AFI
Air Out
(port-to-FRU)
AC224 SFP+ and 4 QSFP+EX4600-40F-AFO
Air In (FRU-to-port)DC224 SFP+ and 4 QSFP+EX4600-40F-DC-AFI
19Copyright © 2019, Juniper Networks, Inc.
Chapter 1: Overview

Table 3: EX4600 Switches (continued)
AirflowPower Supply
Number of
Expansion
Modules
SupportedPortsProduct Number
Air Out
(port-to-FRU)
DC224 SFP+ and 4 QSFP+EX4600-40F-DC-AFO
Fan modules are not
shipped by default.
Order fan modules
separately
Order PSUs
separately
224 SFP+ and 4 QSFP+EX4600-40F-S
CAUTION: Do not mix:
•AC and DC power supplies in the same chassis.
•Power supplies with different airflow labels (AFI) and (AFO) in the same
chassis.
•Fan modules with different airflow labels (AIR INI) and (AIR OUT) in the
same chassis.
•Power supplies and fan modules with different airflow labels (AIR INI) and
AIR OUT) or AFI and AFO in the same chassis.
Understanding Redundancy of EX4600 Switch Components and Functionality
The following hardware components provide redundancy on an EX4600 switch:
•Power supplies—The EX4600 switch can operate with one power supply. However,
all EX4600 switches, except the EX4600-40F-S switch, ship with two power supplies
preinstalled for redundancy. Each power supply provides power to all components in
the switch. Installing two power provides full power redundancy to the switch. If one
power supply fails or is removed, the second power supply balances the electrical load
without interruption.
•Cooling system—All EX4600 switches, except the EX4600-40F-S ship with five fan
modules installed. If a fan module fails and leads to the overheating of the chassis,
alarms occur and the switch might shut down.
EX4600 Chassis
•Chassis Physical Specifications for an EX4650 Switch on page 21
•Field-Replaceable Units in an EX4600 Switch on page 21
•Port Panel of an EX4600 Switch on page 22
•Access Port and Uplink Port LEDs on an EX4600 Switch on page 23
Copyright © 2019, Juniper Networks, Inc.20
EX4600 Switch Hardware Guide