Juniper EX3300 User manual

Complete Hardware Guide for EX3300 Ethernet
Switches
Modified: 2015-06-23
Revision 9
Copyright © 2015, Juniper Networks, Inc.

Juniper Networks, Inc.
1133 Innovation Way
Sunnyvale, California 94089
USA
408-745-2000
www.juniper.net
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.
Complete Hardware Guide for EX3300 Ethernet Switches
Copyright © 2015, Juniper Networks, Inc.
All rights reserved.
Revision History
July 2014—Revision 9
June 2014—Revision 8
March 2014—Revision 7
January 2013—Revision 6
September 2012—Revision 5
September 2012—Revision 4
March 2012—Revision 3
November 2011—Revision 2
September 2011—Revision 1
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.
SOFTWARE LICENSE
The terms and conditions for using this software are described in the software license contained in the acknowledgment to your purchase
order or, to the extent applicable, to any reseller agreement or end-user purchase agreement executed between you and Juniper Networks.
By using this software, you indicate that you understand and agree to be bound by those terms and conditions.
Generally speaking, the software license restricts the manner in which you are permitted to use the software and may contain prohibitions
against certain uses. The software license may state conditions under which the license is automatically terminated. You should consult
the license for further details.
For complete product documentation, please see the Juniper Networks Web site at www.juniper.net/techpubs.
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 © 2015, Juniper Networks, Inc.ii

Table of Contents
AbouttheDocumentation.........................................xiii
Junos OS Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . xiii
DocumentationConventions......................................xiii
DocumentationFeedback.........................................xv
RequestingTechnicalSupport.....................................xv
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
OpeningaCasewithJTAC.....................................xvi
Part 1 Switch and Components Overview and Specifications
Chapter1 EX3300SwitchOverview...........................................3
EX3300SwitchesHardwareOverview...................................3
EX3300SwitchesFirstView........................................3
UplinkPorts.....................................................4
PoweroverEthernetPlusPorts.....................................4
EX3300SwitchModels...............................................4
Chassis Physical Specifications for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . 5
FrontPanelofanEX3300Switch.......................................6
RearPanelofanEX3300Switch........................................7
EX3300 Switch Hardware and CLI Terminology Mapping . . . . . . . . . . . . . . . . . . . . 8
Chapter2 Component Descriptions ...........................................11
LCDPanelinEX3300Switches.........................................11
LCDPanelModes................................................12
LCDPanelMenus................................................13
Chassis Status LEDs in EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Network Port and Uplink Port LEDs in EX3300 Switches . . . . . . . . . . . . . . . . . . . . 17
Management Port LEDs in EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
PowerSupplyinEX3300Switches.....................................21
Cooling System and Airflow in an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . . 22
Airflow Direction in EX3300 Switch Models . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Front-to-BackAirflow............................................23
Back-to-FrontAirflow............................................23
Chapter3 ComponentSpecifications.........................................25
USB Port Specifications for an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Network Port Connector Pinout Information for an EX3300 Switch . . . . . . . . . . . 26
Console Port Connector Pinout Information for an EX Series Switch . . . . . . . . . . 27
RJ-45 to DB-9 Serial Port Adapter Pinout Information for a Switch . . . . . . . . . . . 28
Management Port Connector Pinout Information for an EX3300 Switch . . . . . . . 29
iiiCopyright © 2015, Juniper Networks, Inc.

Pluggable Transceivers Supported on EX3300 Switches . . . . . . . . . . . . . . . . . . . 30
SFP+ Direct Attach Cables for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . 46
CableSpecifications.............................................47
Standards Supported by These Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Part 2 Planning for Switch Installation
Chapter4 Site Preparation ..................................................55
Site Preparation Checklist for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 55
GeneralSiteGuidelines..............................................56
SiteElectricalWiringGuidelines.......................................57
Environmental Requirements and Specifications for EX Series Switches . . . . . . . 59
Chapter 5 Mounting and Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Rack Requirements for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Cabinet Requirements for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Requirements for Mounting an EX3300 Switch on a Desktop or Wall . . . . . . . . . 65
Clearance Requirements for Airflow and Hardware Maintenance for EX3300
Switches ......................................................66
Chapter6 Cable Specifications ..............................................69
Network Cable Specifications for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . 69
Chapter7 PlanningPowerRequirements......................................71
Power Specifications for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
AC Power Cord Specifications for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . 72
Chapter8 PlanningtheVirtualChassis........................................75
Understanding EX3300 Virtual Chassis Hardware Configuration . . . . . . . . . . . . . 75
PlanningEX3300VirtualChassis......................................76
Virtual Chassis Cabling Configuration Examples for EX3300 Switches . . . . . . . . 76
Part 3 Installing and Connecting the Switch and Switch Components
Chapter9 InstallingtheSwitch...............................................81
Installing and Connecting an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
UnpackinganEX3300Switch.........................................82
Parts Inventory (Packing List) for an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . 83
MountinganEX3300Switch.........................................84
Mounting an EX3300 Switch on Two Posts in a Rack or Cabinet . . . . . . . . . . . . . 84
Mounting an EX3300 Switch on Four Posts in a Rack or Cabinet . . . . . . . . . . . . . 87
Mounting an EX3300 Switch in a Recessed Position in a Rack or Cabinet . . . . . . 90
Mounting an EX3300 Switch on a Desk or Other Level Surface . . . . . . . . . . . . . . . 91
MountinganEX3300SwitchonaWall.................................92
Chapter10 InstallingSwitchComponents......................................95
Installing a Transceiver in an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Copyright © 2015, Juniper Networks, Inc.iv
Complete Hardware Guide for EX3300 Ethernet Switches

Chapter11 Connectingthe Switch ............................................99
Connecting Earth Ground to an EX Series Switch . . . . . . . . . . . . . . . . . . . . . . . . . 99
Parts and Tools Required for Connecting an EX Series Switch to Earth
Ground ...................................................100
Special Instructions to Follow Before Connecting Earth Ground to a
Switch....................................................102
Connecting Earth Ground to an EX Series Switch . . . . . . . . . . . . . . . . . . . . . 104
Connecting AC Power to an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Connecting DC Power to an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Connecting a Switch to a Network for Out-of-Band Management . . . . . . . . . . . 109
Connecting a Switch to a Management Console . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Connecting a Fiber-Optic Cable to a Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Chapter 12 Performing Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
EX3300 Switch Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Connecting and Configuring an EX Series Switch (CLI Procedure) . . . . . . . . . . . . 119
Connecting and Configuring an EX Series Switch (J-Web Procedure) . . . . . . . . . 123
Part 4 Removing Switch Components
Chapter 13 Removing Switch Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Removing a Transceiver from a Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Disconnecting a Fiber-Optic Cable from a Switch . . . . . . . . . . . . . . . . . . . . . . . . . 132
Part 5 Switch and Component Maintenance
Chapter14 Routine Maintenance.............................................135
Maintaining Fiber-Optic Cables in Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Part 6 Returning Hardware
Chapter 15 Returning the Switch or Switch Components . . . . . . . . . . . . . . . . . . . . . . . . 139
Returning an EX3300 Switch or Component for Repair or Replacement . . . . . . 139
Locating the Serial Number on an EX3300 Switch or Component . . . . . . . . . . . 140
Listing the Switch and Components Details with the CLI . . . . . . . . . . . . . . . 140
Locating the Chassis Serial Number ID Label on an EX3300 Switch . . . . . . . 141
Contacting Customer Support to Obtain Return Materials Authorization for
Switches ......................................................141
Packing an EX3300 Switch or Component for Shipping . . . . . . . . . . . . . . . . . . . 143
PackingaSwitchforShipping.....................................144
Packing Switch Components for Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Part 7 Safety Information
Chapter16 GeneralSafetyInformation........................................149
General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Definitions of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
FireSafetyRequirements............................................152
QualifiedPersonnelWarning.........................................153
Warning Statement for Norway and Sweden . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
vCopyright © 2015, Juniper Networks, Inc.
Table of Contents

Chapter 17 Radiation and Laser Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Laser and LED Safety Guidelines and Warnings for Switches . . . . . . . . . . . . . . . 155
GeneralLaserSafetyGuidelines...................................155
Class1LaserProductWarning....................................156
Class1LEDProductWarning.....................................156
LaserBeamWarning............................................157
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Chapter 18 Installation and Maintenance Safety Information . . . . . . . . . . . . . . . . . . . . . 161
InstallationInstructionsWarning......................................161
Chassis Lifting Guidelines for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 163
RampWarning....................................................164
Rack-Mounting and Cabinet-Mounting Warnings . . . . . . . . . . . . . . . . . . . . . . . . 164
Wall-Mounting Warning for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
GroundedEquipmentWarning.......................................169
Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . . . . . . 170
BatteryHandlingWarning........................................170
JewelryRemovalWarning.........................................171
LightningActivityWarning........................................172
OperatingTemperatureWarning...................................173
ProductDisposalWarning........................................174
Chapter 19 Power and Electrical Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . 177
Prevention of Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
ACPowerDisconnectionWarning.....................................182
DC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
DCPowerDisconnectionWarning.....................................185
DC Power Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . . 187
DCPowerWiringSequenceWarning...................................188
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
TNPowerWarning..................................................191
Action to Take After an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Part 8 Compliance Information
Chapter20 Compliance Information ..........................................195
Agency Approvals for EX Series Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Compliance Statements for EMC Requirements for EX Series Switches . . . . . . . 196
Canada ......................................................196
EuropeanCommunity...........................................197
Israel.........................................................197
Japan ........................................................197
Korea ........................................................198
UnitedStates..................................................198
FCCPart15Statement..........................................198
Nonregulatory Environmental Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Compliance Statements for Acoustic Noise for EX Series Switches . . . . . . . . . . 200
Declaration of Conformity for EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . 201
Copyright © 2015, Juniper Networks, Inc.vi
Complete Hardware Guide for EX3300 Ethernet Switches

List of Figures
Part 1 Switch and Components Overview and Specifications
Chapter1 EX3300SwitchOverview...........................................3
Figure 1: Front Panel of an EX3300 Switch with 48 Gigabit Ethernet Ports . . . . . . . 7
Figure 2: Front Panel of an EX3300 Switch with 24 Gigabit Ethernet Ports . . . . . . 7
Figure 3: Rear Panel of an EX3300 Switch with an AC Power Supply . . . . . . . . . . . 8
Figure 4: Rear Panel of an EX3300 Switch with a DC Power Supply . . . . . . . . . . . . 8
Chapter2 Component Descriptions ...........................................11
Figure5:LCDPanel..................................................11
Figure 6: Chassis Status LEDs in an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 7: LEDs on the Network Ports on the Front Panel . . . . . . . . . . . . . . . . . . . . . 17
Figure8:LEDsontheUplinkPorts......................................18
Figure 9: LEDs on the Management Port on an EX3300 Switch . . . . . . . . . . . . . . 20
Figure 10: Front-to-Back Airflow Through the EX3300 Switch Chassis . . . . . . . . . 23
Figure 11: Back-to-Front Airflow Through the EX3300 Switch Chassis . . . . . . . . . 24
Chapter3 ComponentSpecifications.........................................25
Figure 12: SFP+ Direct Attach Cables for EX Series Switches . . . . . . . . . . . . . . . . . 47
Part 2 Planning for Switch Installation
Chapter 5 Mounting and Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure 13: Clearance Requirements for Airflow and Hardware Maintenance for
EX3300Switches...............................................66
Figure 14: Front-to-Back Airflow Through the EX3300 Switch Chassis . . . . . . . . . 67
Figure 15: Back-to-Front Airflow Through the EX3300 Switch Chassis . . . . . . . . . 67
Chapter7 PlanningPowerRequirements......................................71
Figure16:ACPlugTypes..............................................73
Chapter8 PlanningtheVirtualChassis........................................75
Figure 17: EX3300 Switches Mounted on a Single Rack and Connected in a Ring
Topology:Option1...............................................77
Figure 18: EX3300 Switches Mounted on a Single Rack and Connected in a Ring
Topology:Option2..............................................77
Figure 19: EX3300 Switches Mounted on a Single Rack and Connected in a Ring:
Option3.......................................................78
Figure 20: EX3300 Switches Mounted on Adjacent Racks and Connected in a
Ring Topology Using Medium and Long Cables: Option 1 . . . . . . . . . . . . . . . . 78
Figure 21: EX3300 Switches Mounted on Adjacent Racks and Connected in a
Ring Topology Using Medium and Long Cables: Option 2 . . . . . . . . . . . . . . . . 78
viiCopyright © 2015, Juniper Networks, Inc.

Part 3 Installing and Connecting the Switch and Switch Components
Chapter9 InstallingtheSwitch...............................................81
Figure 22: Attaching the Mounting Bracket Along the Front of the Switch . . . . . . 86
Figure 23: Mounting the Switch on Two Posts in a Rack . . . . . . . . . . . . . . . . . . . . 86
Figure 24: Attaching the Front-Mounting Bracket to the Side Mounting-Rail . . . . 88
Figure 25: Attaching the Side Mounting-Rail to the Switch Chassis . . . . . . . . . . . 89
Figure 26: Mounting the Switch to the Front Posts in a Rack . . . . . . . . . . . . . . . . . 89
Figure 27: Sliding the Rear Mounting-Blade into the Side Mounting-Rail . . . . . . . 90
Figure 28: Attaching Rubber Feet to a Switch Chassis . . . . . . . . . . . . . . . . . . . . . . 92
Figure 29: Attaching Wall-Mount Brackets to a Switch Chassis . . . . . . . . . . . . . . 93
Figure 30: Measurements for Installing Mounting Screws . . . . . . . . . . . . . . . . . . . 94
Figure 31: Mounting the Switch on a Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Chapter10 InstallingSwitchComponents......................................95
Figure 32: Installing a Transceiver in an EX Series Switch . . . . . . . . . . . . . . . . . . . . 97
Chapter11 Connectingthe Switch ............................................99
Figure 33: Connecting the Grounding Lug to a Switch Mounted on Four Posts of
a Rack .......................................................103
Figure 34: Connecting a Grounding Cable to an EX Series Switch . . . . . . . . . . . . 104
Figure 35: Connecting an AC Power Cord Retainer Clip to the AC Power Cord
Inlet .........................................................106
Figure 36: Connecting an AC Power Cord to the AC Power Cord Inlet . . . . . . . . . 107
Figure 37: Securing Ring Lugs to the Terminals on the DC Power Supply . . . . . . 108
Figure38:EthernetCableConnector...................................110
Figure 39: Connecting a Switch to a Network for Out-of-Band Management . . . . 111
Figure40:EthernetCableConnector...................................112
Figure 41: Connecting a Switch to a Management Console Through a Console
Server ........................................................113
Figure 42: Connecting a Switch Directly to a Management Console . . . . . . . . . . . 113
Figure 43: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed in
aSwitch......................................................114
Chapter 12 Performing Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Figure 44: LCD Panel in an EX3200, EX4200, EX4500, EX4550, or EX8200
Switch .......................................................124
Figure 45: LCD Panel in an EX4300 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Part 4 Removing Switch Components
Chapter 13 Removing Switch Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Figure 46: Removing a Transceiver from a Switch . . . . . . . . . . . . . . . . . . . . . . . . . 131
Part 6 Returning Hardware
Chapter 15 Returning the Switch or Switch Components . . . . . . . . . . . . . . . . . . . . . . . . 139
Figure 47: Location of the Serial Number ID Label on EX3300 Switches . . . . . . . 141
Copyright © 2015, Juniper Networks, Inc.viii
Complete Hardware Guide for EX3300 Ethernet Switches

Part 7 Safety Information
Chapter 19 Power and Electrical Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Figure 48: Placing a Component into an Antistatic Bag . . . . . . . . . . . . . . . . . . . . 179
ixCopyright © 2015, Juniper Networks, Inc.
List of Figures

Copyright © 2015, Juniper Networks, Inc.x
Complete Hardware Guide for EX3300 Ethernet Switches

List of Tables
AbouttheDocumentation.........................................xiii
Table1:NoticeIcons.................................................xiv
Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Part 1 Switch and Components Overview and Specifications
Chapter1 EX3300SwitchOverview...........................................3
Table3:EX3300SwitchModels........................................5
Table 4: Physical Specifications of the EX3300 Switch Chassis . . . . . . . . . . . . . . . 5
Table 5: CLI Equivalents of Terms Used in Documentation for EX3300
Switches .......................................................9
Chapter2 Component Descriptions ...........................................11
Table6:LCDPanelMenuOptions......................................13
Table 7: Chassis Status LEDs in an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 8: Link/Activity LED on the Network Ports and Uplink Ports in EX3300
Switches.......................................................18
Table 9: Status LED on the Network Ports in EX3300 Switches . . . . . . . . . . . . . . 19
Table 10: Status LED on the Uplink Ports in EX3300 Switches . . . . . . . . . . . . . . . 20
Table 11: Link/Activity LED on the Management Port on an EX3300 Switch . . . . . 21
Table 12: Status LED on the Management Port on an EX3300 Switch . . . . . . . . . . 21
Table 13: Power Consumed by EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 14: Airflow Direction in EX3300 Switch Models . . . . . . . . . . . . . . . . . . . . . . . 22
Chapter3 ComponentSpecifications.........................................25
Table 15: Network Port Connector Pinout Information for EX3300 Switches . . . . 26
Table 16: EX Series Switches Console Port Connector Pinout Information . . . . . . 27
Table 17: RJ-45 to DB-9 Serial Port Adapter Pinout Information . . . . . . . . . . . . . . 28
Table 18: Management Port Connector Pinout Information for EX3300
Switches ......................................................29
Table 19: Optical interface Support and Copper Interface Support for Gigabit
Ethernet SFP Transceivers in EX3300 Switches . . . . . . . . . . . . . . . . . . . . . . . 31
Table 20: Optical interface Support for SFP+ Gigabit Ethernet Transceivers in
EX3300Switches...............................................42
Table 21: Software Support for SFP+ Passive Direct Attach Cables for EX Series
Switches ......................................................47
Table 22: SFP+ Direct Attach Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . 49
Part 2 Planning for Switch Installation
Chapter4 Site Preparation ..................................................55
Table23:SitePreparationChecklist....................................55
xiCopyright © 2015, Juniper Networks, Inc.

Table 24: Site Electrical Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Table 25: EX Series Switch Environmental Tolerances . . . . . . . . . . . . . . . . . . . . . 60
Chapter 5 Mounting and Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Table 26: Rack Requirements and Specifications for the Switch . . . . . . . . . . . . . 63
Table 27: Cabinet Requirements and Specifications for the Switch . . . . . . . . . . . 65
Chapter7 PlanningPowerRequirements......................................71
Table 28: AC Power Supply Electrical Specifications for EX3300 Switches . . . . . . 71
Table 29: DC Power Supply Electrical Specifications for EX3300 Switches . . . . . . 71
Table 30: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Part 3 Installing and Connecting the Switch and Switch Components
Chapter9 InstallingtheSwitch...............................................81
Table 31: Parts List for an EX3300 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Chapter11 Connectingthe Switch ............................................99
Table 32: Parts and Tools Required for Connecting an EX Series Switch to Earth
Ground.......................................................100
Table 33: Special Instructions to Follow Before Connecting Earth Ground to a
Switch .......................................................102
Copyright © 2015, Juniper Networks, Inc.xii
Complete Hardware Guide for EX3300 Ethernet Switches

About the Documentation
•Junos OS Documentation and Release Notes on page xiii
•Documentation Conventions on page xiii
•Documentation Feedback on page xv
•Requesting Technical Support on page xv
Junos OS Documentation and Release Notes
For a list of related Junos OS documentation, see
http://www.juniper.net/techpubs/software/junos/.
If the information in the latest release notes differs from the information in the
documentation, follow the Junos OS 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/.
Documentation Conventions
Table 1 on page xiv defines the notice icons used in this guide.
xiiiCopyright © 2015, 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 © 2015, Juniper Networks, Inc.xiv
Complete Hardware Guide for EX3300 Ethernet Switches

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:
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
xvCopyright © 2015, Juniper Networks, Inc.
About the Documentation

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:
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•Join and participate in the Juniper Networks Community Forum:
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•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
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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).
For international or direct-dial options in countries without toll-free numbers, see
http://www.juniper.net/support/requesting-support.html.
Copyright © 2015, Juniper Networks, Inc.xvi
Complete Hardware Guide for EX3300 Ethernet Switches

PART 1
Switch and Components Overview and
Specifications
•EX3300 Switch Overview on page 3
•Component Descriptions on page 11
•Component Specifications on page 25
1Copyright © 2015, Juniper Networks, Inc.

Copyright © 2015, Juniper Networks, Inc.2
Complete Hardware Guide for EX3300 Ethernet Switches

CHAPTER 1
EX3300 Switch Overview
•EX3300 Switches Hardware Overview on page 3
•EX3300 Switch Models on page 4
•Chassis Physical Specifications for EX3300 Switches on page 5
•Front Panel of an EX3300 Switch on page 6
•Rear Panel of an EX3300 Switch on page 7
•EX3300 Switch Hardware and CLI Terminology Mapping on page 8
EX3300 Switches Hardware Overview
Juniper Networks EX Series Ethernet Switches provide scalable connectivity for the
enterprise market, including branch offices, campus locations, and data centers. The
switches run the Juniper Networks Junos operating system (Junos OS), which provides
Layer 2 and Layer 3 switching, routing, and security services. The same Junos OS code
base that runs on EX Series switches also runs on all Juniper Networks M Series, MX
Series, and T Series routers and SRX Series services gateways.
Juniper Networks EX3300 Ethernet Switches provide connectivity for low-density
environments.
This topic describes:
•EX3300 Switches First View on page 3
•Uplink Ports on page 4
•Power over Ethernet Plus Ports on page 4
EX3300 Switches First View
EX3300 switches provide:
•Either 24 or 48 built-in network ports with 10/100/1000BASE-T Gigabit Ethernet
connectors (ports labeled 0 through 23 or 0 through 47)
•Four uplink ports (ports labeled 0 through 3)
•Virtual Chassis capability—You can connect up to ten EX3300 switches together to
form one unit that you manage as a single chassis, called a Virtual Chassis.
•Power over Ethernet Plus (PoE+) on all network ports (in PoE+-capable models only)
3Copyright © 2015, Juniper Networks, Inc.

Uplink Ports
Each EX3300 switch has four autosensing uplink ports. You can use the uplink ports on
the switch to:
•Connect an access switch to a distribution switch
•Interconnect member switches of a Virtual Chassis
The uplink ports labeled 0 and 1 (interfaces ge-0/1/0 and ge-0/1/1 or xe-0/1/0 and
xe-0/1/1) are configured by default as network ports. To use uplink ports 0 and 1 to
interconnect Virtual Chassis members, you must configure them as Virtual Chassis ports
(VCPs).
The uplink ports labeled 2 and 3 (interfaces ge-0/1/2 and ge-0/1/3 or xe-0/1/2 and
xe-0/1/3) are configured by default as VCPs. You can use these uplink ports to
interconnect Virtual Chassis members. To use uplink ports 2 and 3 as network ports, you
must configure them as network ports.
The uplink ports support SFP and SFP+ transceivers. For a list of supported transceivers,
see “Pluggable Transceivers Supported on EX3300 Switches” on page 30.
Power over Ethernet Plus Ports
EX3300 switches are available in models with or without PoE+ capability. Models that
support PoE+ provide that support on all network ports.
PoE+ ports provide electrical current to devices—such as IP phones, wireless access
points, and security cameras—through network cables, thus eliminating the need for
separate power cords for those devices.
NOTE: IEEE 802.3af and IEEE 802.3at powered devices require category 5
or higher Ethernet cables.
Related
Documentation
EX3300 Switch Models on page 4•
•Site Preparation Checklist for EX3300 Switches on page 55
EX3300 Switch Models
The EX3300 switch models are available:
•With 24 or 48 network ports
•With or without PoE+ capability
•With front-to-back or back-to-front airflow
•With AC or DC power supplies
Table 3 on page 5 lists the EX3300 switch models.
Copyright © 2015, Juniper Networks, Inc.4
Complete Hardware Guide for EX3300 Ethernet Switches