Juniper EX4600 Installation instructions

EX4600 Switch Hardware Guide
Modified: 2019-05-31
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............................................xiii
DocumentationandReleaseNotes.................................xiii
UsingtheExamplesinThisManual.................................xiii
MergingaFullExample.......................................xiv
MergingaSnippet...........................................xiv
Documentation Conventions ......................................xv
DocumentationFeedback........................................xvii
RequestingTechnicalSupport....................................xvii
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Creating a Service Request with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Chapter1 Overview .........................................................19
EX4600SystemOverview............................................19
EX4600SwitchHardwareOverview................................19
BenefitsoftheEX4600Switch................................20
EX4600 Hardware ..........................................20
System Software ............................................21
EX4600SwitchModels...........................................21
Understanding Redundancy of EX4600 Switch Components and
Functionality ...............................................22
EX4600Chassis....................................................23
Chassis Physical Specifications for an EX4650 Switch . . . . . . . . . . . . . . . . . 23
Field-Replaceable Units in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . 23
PortPanelofanEX4600Switch...................................24
Access Port and Uplink Port LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . 25
Management Panel of an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Chassis Status LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 29
ExpansionModulesfortheEX4600................................30
EX4600-EM-8F .............................................31
QFX-EM-4Q ................................................32
EX4600CoolingSystem.............................................32
Cooling System and Airflow in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . 33
FanModules................................................33
Do Not Install Components with Different Airflow or Wattage in the
Switch.................................................36
FanModuleStatus...........................................37
Fan Module LED on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
EX4600PowerSystem..............................................38
AC Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
AC Power Supply LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . 40
AC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 41
iiiCopyright © 2019, Juniper Networks, Inc.

AC Power Cord Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . 41
DC Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DC Power Supply LEDs in EX4650 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 44
DC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 45
Grounding Cable and Lug Specifications for an EX4600 Switch . . . . . . . . . . 45
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 47
Site Preparation Checklist for an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 47
EX4600 Site Guidelines and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Environmental Requirements and Specifications for EX Series Switches . . . 48
GeneralSiteGuidelines..........................................53
SiteElectricalWiringGuidelines....................................53
RackRequirements..............................................54
CabinetRequirements...........................................55
Clearance Requirements for Airflow and Hardware Maintenance for an
EX4600Switch.............................................55
EX4600 Network Cable and Transceiver Planning . . . . . . . . . . . . . . . . . . . . . . . . 56
Determining Interface Support for an EX4600 Switch . . . . . . . . . . . . . . . . . . 56
Cable Specifications for QSFP+ Transceivers on EX4600 Series
Switches...................................................57
Network Cable Specifications for EX4600 Switches . . . . . . . . . . . . . . . . . . . 59
Understanding EX Series Switches Fiber-Optic Cable Signal Loss,
Attenuation,andDispersion...................................59
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . 60
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . 60
Calculating the EX Series Switch Fiber-Optic Cable Power Budget . . . . . . . . 61
Calculating the EX Series Switch Fiber-Optic Cable Power Margin . . . . . . . . . 61
EX4600 Management Cable Specifications and Pinouts . . . . . . . . . . . . . . . . . . . 63
Cable Specifications for Console and Management Connections for the
EX4600 ...................................................63
USB Port Specifications for an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . 63
Console Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . . . . . . 64
RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . . . . . 65
Chapter 3 Initial Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Unpacking and Mounting an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Installing and Connecting an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 67
UnpackinganEX4600Switch.....................................68
Mounting an EX4600 Switch in a Rack or Cabinet . . . . . . . . . . . . . . . . . . . . . 69
Before You Begin Rack Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
FourPostProcedure..........................................71
ConnectingtheEX4600toPower......................................72
Connecting Earth Ground to an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 73
Connecting AC Power to an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Connecting DC Power to an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Copyright © 2019, Juniper Networks, Inc.iv
EX4600 Switch Hardware Guide

Connecting the EX4600 to Management Devices . . . . . . . . . . . . . . . . . . . . . . . . . 80
Connecting a Device to a Network for Out-of-Band Management . . . . . . . . 80
Connecting a Device to a Management Console by Using an RJ-45
Connector..................................................81
Connecting EX4600 Switches in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . 82
ConfiguringJunosOSontheEX4600...................................83
Chapter4 Maintaining Components ..........................................87
Maintaining the EX4600 Switch Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Removing a Fan Module from an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . 87
Installing a Fan Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . 88
Maintaining the EX4600 Switch Power System . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Removing a Power Supply from an EX4600 Switch . . . . . . . . . . . . . . . . . . . 90
Installing a Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 91
Maintaining the Expansion Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . . 93
Removing an Expansion Module from an EX4600 Switch . . . . . . . . . . . . . . . 93
Installing an Expansion Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . 94
MaintainingTransceivers.............................................96
RemovingaTransceiver..........................................96
InstallingaTransceiver...........................................99
MaintainingFiber-OpticCables.......................................101
ConnectingaFiber-OpticCable...................................101
Disconnecting a Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
MaintainingFiber-OpticCables...................................103
RemovingtheEX4600Switch.......................................104
Installing and Removing EX4600 Switch Hardware Components . . . . . . . . 104
PoweringOffanEX4600Switch..................................105
Removing an EX4600 Switch from a Rack or Cabinet . . . . . . . . . . . . . . . . . 107
Chapter5 TroubleshootingHardware........................................109
Troubleshooting the EX4600 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Understanding Alarm Types and Severity Levels on EX Series Switches . . . 109
InterfaceAlarmMessages........................................110
CreatinganEmergencyBootDevice.................................111
Performing a Recovery Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Chapter 6 Contacting Customer Support and Returning the Chassis or
Components .....................................................115
Returning an EX4600 Chassis or Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Returning an EX4600 Switch or Component for Repair or Replacement . . . 115
Locating the Serial Number on an EX4600 Switch or Component . . . . . . . . 116
Listing the Chassis and Component Details Using the CLI . . . . . . . . . . . 116
Locating the Chassis Serial Number ID Label on an EX4600 Switch . . . 117
Locating the Serial Number ID Labels on FRU Components . . . . . . . . . . 117
Contacting Customer Support to Obtain Return Material Authorization . . . . 118
Packing an EX4600 Switch or Component for Shipping . . . . . . . . . . . . . . . . 118
Packing an EX4600 Switch for Shipping . . . . . . . . . . . . . . . . . . . . . . . . . 119
Packing EX4600 Switch Components for Shipping . . . . . . . . . . . . . . . . 120
vCopyright © 2019, Juniper Networks, Inc.
Table of Contents

Chapter 7 Safety and Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Definitions of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
QualifiedPersonnelWarning.........................................124
Warning Statement for Norway and Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
FireSafetyRequirements............................................125
Fire Suppression ...............................................125
FireSuppressionEquipment......................................125
InstallationInstructionsWarning......................................126
Chassis and Component Lifting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
RestrictedAccessWarning...........................................127
Ramp Warning....................................................128
Rack-Mounting and Cabinet-Mounting Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 129
GroundedEquipmentWarning........................................133
Laser and LED Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . 133
GeneralLaserSafetyGuidelines...................................134
Class1LaserProductWarning....................................134
Class1LEDProductWarning......................................134
LaserBeamWarning............................................135
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . . . . . . 136
BatteryHandlingWarning........................................137
JewelryRemovalWarning........................................138
LightningActivityWarning........................................139
OperatingTemperatureWarning..................................139
ProductDisposalWarning........................................141
General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . 141
Action to Take After an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Prevention of Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
ACPowerDisconnectionWarning.....................................145
DC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
DCPowerDisconnectionWarning.....................................146
DC Power Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . . 147
DCPowerWiringSequenceWarning...................................148
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . 151
TNPowerWarning.................................................152
Agency Approvals for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Compliance Statements for EMC Requirements for EX Series Switches . . . . . . . 153
Canada.......................................................153
Taiwan .......................................................154
EuropeanCommunity...........................................154
Israel.........................................................154
Japan ........................................................155
Korea ........................................................155
UnitedStates..................................................155
FCCPart15Statement..........................................155
Copyright © 2019, Juniper Networks, Inc.vi
EX4600 Switch Hardware Guide

Nonregulatory Environmental Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Compliance Statements for Acoustic Noise for EX Series Switches . . . . . . . . . . 157
Statements of Volatility for Juniper Network Devices . . . . . . . . . . . . . . . . . . . . . . 157
viiCopyright © 2019, Juniper Networks, Inc.
Table of Contents

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

List of Figures
Chapter1 Overview .........................................................19
Figure 1: EX4600 Port Panel with Expansion Bays . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 2: QFX-EM-4Q Expansion Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 3: EX4600-EM-8F Expansion Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure4:EX4600SwitchPortPanel....................................25
Figure5:LEDsontheSFP+Ports......................................25
Figure6:LEDsontheQSFP+Ports.....................................25
Figure 7: EX4600 Switch, FRU Side with Fans Modules and Power Supplies
Installed.......................................................27
Figure 8: Management Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 9: Chassis Status LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . 29
Figure 10: EX4600-EM-8F Faceplate and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 11: QFX-EM-4Q Faceplate and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 12: Fan Module for EX4600 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 13: Air In Airflow Through EX4600 Switch Chassis . . . . . . . . . . . . . . . . . . . 35
Figure 14: Air Out Airflow Through EX4600 Switch Chassis . . . . . . . . . . . . . . . . . . 36
Figure 15: Fan Module LED in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 16: AC Power Supply in EX4600 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 17: Power Supply Handle Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 18: AC Power Supply LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . 40
Figure 19: DC Power Supply in EX4600 and QFX5100 Switches . . . . . . . . . . . . . . 43
Figure 20: DC Power Supply Faceplate in EX4600 Switches . . . . . . . . . . . . . . . . . 43
Figure 21: DC Power Supply Faceplate on an EX4650 Switch . . . . . . . . . . . . . . . . 44
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 22: Clearance Requirements for Airflow and Hardware Maintenance for
aEX4600Switch...............................................56
Figure23:PortPanelofEX4600.......................................57
Chapter 3 Initial Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 24: Attaching Mounting Rails to the EX4600 . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 25: Attach EX4600 Switch to Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 26: Slide Mounting Blade into EX4600 Mounting Rail . . . . . . . . . . . . . . . . . 72
Figure 27: Connecting a Grounding Cable to an EX4600 Switch . . . . . . . . . . . . . . 74
Figure 28: Connecting an AC Power Cord to an AC Power Supply in an EX4600
Switch ........................................................75
Figure 29: DC Power Supply Faceplate for an EX4600 Switch . . . . . . . . . . . . . . . 79
Figure 30: Securing Ring Lugs to the Terminals on the EX4600 DC Power
Supply........................................................80
Figure 31: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 32: Connecting a Device to a Network for Out-of-Band Management . . . . 81
ixCopyright © 2019, Juniper Networks, Inc.

Figure 33: RJ-45 Connector on an Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 34: Connecting a Device to a Management Console Through a Console
Server ........................................................82
Figure 35: Connecting a Device Directly to a Management Console . . . . . . . . . . . 82
Figure 36: Four Member Virtual Chassis with EX4600 Master and Backup . . . . . 83
Chapter4 Maintaining Components ..........................................87
Figure 37: Removing a Fan Module from an EX4600 Switch . . . . . . . . . . . . . . . . . 88
Figure 38: Installing a Fan Module in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . 89
Figure 39: Removing a Power Supply from an EX4600 Switch . . . . . . . . . . . . . . . 91
Figure 40: Installing a Power Supply in an EX4600 Switch . . . . . . . . . . . . . . . . . . 92
Figure 41: Removing a QFX-EM-4Q Expansion Module from an EX4600
Switch........................................................94
Figure 42: Installing a QFX4Q Expansion Module in an EX4600 Switch . . . . . . . . 96
Figure 43: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver . . . . . . . . . . . . . 98
Figure44:InstallingaTransceiver......................................101
Figure 45: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed in
aDevice......................................................102
Chapter 6 Contacting Customer Support and Returning the Chassis or
Components .....................................................115
Figure 46: Location of the Serial Number ID Label on an EX4600 Switch . . . . . . 117
Chapter 7 Safety and Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Figure 47: Placing a Component into an Antistatic Bag . . . . . . . . . . . . . . . . . . . . 143
Copyright © 2019, Juniper Networks, Inc.x
EX4600 Switch Hardware Guide

List of Tables
AbouttheDocumentation.........................................xiii
Table1:NoticeIcons.................................................xv
Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Chapter1 Overview .........................................................19
Table3:EX4600Switches............................................22
Table 4: Physical Specifications for the EX4600 Switch Chassis . . . . . . . . . . . . . 23
Table5:FRUsinaEX4600Switch.....................................24
Table 6: Network Port LEDs on SFP+ Ports on an EX4600 Switch . . . . . . . . . . . . 26
Table 7: Network Port LEDs on QSFP+ Ports on an EX4600 Switch . . . . . . . . . . . 26
Table 8: Chassis Status LEDs on an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . 30
Table9:EX4600-EM-8FStatusLED...................................32
Table 10: Expansion Module Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 11: Fan Modules for EX4600 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table12:FanModuleLED.............................................37
Table 13: Fan Tray LED in an EX4600 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 14: Airflow Direction in EX4600 and QFX5100 AC Power Supplies . . . . . . . 40
Table 15: AC Power Supply LEDs on a EX4600 Switch . . . . . . . . . . . . . . . . . . . . . 40
Table 16: AC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . 41
Table 17: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 18: DC Power Supply LEDs on an EX4650 Switch . . . . . . . . . . . . . . . . . . . . 44
Table 19: DC Power Specifications for an EX4600 Switch . . . . . . . . . . . . . . . . . . . 45
Chapter 2 Site Planning, Preparation, and Specifications . . . . . . . . . . . . . . . . . . . . . . . . 47
Table20:SitePreparationChecklist....................................47
Table 21: EX Series Switch Environmental Tolerances . . . . . . . . . . . . . . . . . . . . . . 49
Table 22: Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 23: Rack Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 24: Cabinet Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . 55
Table25:QSFP+MPOCableSignals...................................58
Table 26: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts . . . . . . . . . . . . . . . . 58
Table 27: Cable Specifications for Switch-to-Management-Device
Connections ...................................................59
Table 28: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . . 62
Table 29: Cable Specifications for Console and Management Connections for
theQFXSeries.................................................63
Table 30: Console Port Connector Pinout Information . . . . . . . . . . . . . . . . . . . . . 64
Table 31: RJ-45 Management Port Connector Pinout Information . . . . . . . . . . . . 65
Chapter 3 Initial Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Table 32: Inventory of Components Supplied with an EX4600 Switch . . . . . . . . 69
xiCopyright © 2019, Juniper Networks, Inc.

Chapter5 TroubleshootingHardware........................................109
Table33:AlarmTerms..............................................109
Copyright © 2019, Juniper Networks, Inc.xii
EX4600 Switch Hardware Guide

About the Documentation
•Documentation and Release Notes on page xiii
•Using the Examples in This Manual on page xiii
•Documentation Conventions on page xv
•Documentation Feedback on page xvii
•Requesting Technical Support on page xvii
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.
Using the Examples in This Manual
If you want to use the examples in this manual, you can use the load merge or the load
merge relative command. These commands cause the software to merge the incoming
configuration into the current candidate configuration. The example does not become
active until you commit the candidate configuration.
If the example configuration contains the top level of the hierarchy (or multiple
hierarchies), the example is a full example. In this case, use the load merge command.
If the example configuration does not start at the top level of the hierarchy, the example
isasnippet. In this case, use the load merge relative command. These procedures are
described in the following sections.
xiiiCopyright © 2019, Juniper Networks, Inc.

Merging a Full Example
To merge a full example, follow these steps:
1. From the HTML or PDF version of the manual, copy a configuration example into a
text file, save the file with a name, and copy the file to a directory on your routing
platform.
For example, copy the following configuration to a file and name the file ex-script.conf.
Copy the ex-script.conf file to the /var/tmp directory on your routing platform.
system {
scripts {
commit {
file ex-script.xsl;
}
}
}
interfaces {
fxp0 {
disable;
unit 0 {
family inet {
address 10.0.0.1/24;
}
}
}
}
2. Merge the contents of the file into your routing platform configuration by issuing the
load merge configuration mode command:
[edit]
user@host# load merge /var/tmp/ex-script.conf
load complete
Merging a Snippet
To merge a snippet, follow these steps:
1. From the HTML or PDF version of the manual, copy a configuration snippet into a text
file, save the file with a name, and copy the file to a directory on your routing platform.
For example, copy the following snippet to a file and name the file
ex-script-snippet.conf. Copy the ex-script-snippet.conf file to the /var/tmp directory
on your routing platform.
commit {
file ex-script-snippet.xsl; }
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EX4600 Switch Hardware Guide

2. Move to the hierarchy level that is relevant for this snippet by issuing the following
configuration mode command:
[edit]
user@host# edit system scripts
[edit system scripts]
3. Merge the contents of the file into your routing platform configuration by issuing the
load merge relative configuration mode command:
[edit system scripts]
user@host# load merge relative /var/tmp/ex-script-snippet.conf
load complete
For more information about the load command, see CLI Explorer.
Documentation Conventions
Table 1 on page xv defines notice icons used in this guide.
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 xvi defines the text and syntax conventions used in this guide.
xvCopyright © 2019, Juniper Networks, Inc.
About the Documentation

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

Table 2: Text and Syntax Conventions (continued)
ExamplesDescriptionConvention
•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:
•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 Juniper Care or Partner Support
Services 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.
xviiCopyright © 2019, Juniper Networks, Inc.
About the Documentation

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/
•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/.
Copyright © 2019, Juniper Networks, Inc.xviii
EX4600 Switch Hardware Guide

CHAPTER 1
Overview
•EX4600 System Overview on page 19
•EX4600 Chassis on page 23
•EX4600 Cooling System on page 32
•EX4600 Power System on page 38
EX4600 System Overview
•EX4600 Switch Hardware Overview on page 19
•EX4600 Switch Models on page 21
•Understanding Redundancy of EX4600 Switch Components and
Functionality on page 22
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.
•Benefits of the EX4600 Switch on page 20
•EX4600 Hardware on page 20
•System Software on page 21
19Copyright © 2019, Juniper Networks, Inc.

Benefits of the EX4600 Switch
Compact solution—The EX4600 switch supports up to 72 10-Gigabit Ethernet ports in
a 1 rack unit (1 U) chassis.
Intelligent buffer management—EX4600 switches have a total of 12 MB shared buffers.
While 25 percent of the total buffer space is dedicated, the rest is shared among all ports
and is user configurable. The intelligent buffer mechanism in the EX4600 effectively
absorbs traffic bursts while providing deterministic performance, significantly increasing
performance over static allocation.
Energy efficiency—The 10-Gigabit Ethernet ports consume less than five watts, thereby
offering a low power solution for top-of-rack, end-of-row, and distribution deployments.
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 20.
Figure 2: QFX-EM-4Q Expansion Module
Copyright © 2019, Juniper Networks, Inc.20
EX4600 Switch Hardware Guide