Juniper EX9253 Installation instructions

EX9253 Switch Hardware Guide
Published
2022-07-01

Juniper Networks, Inc.
1133 Innovaon 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 respecve 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 publicaon without noce.
EX9253 Switch Hardware Guide
Copyright © 2022 Juniper Networks, Inc. All rights reserved.
The informaon in this document is current as of the date on the tle page.
YEAR 2000 NOTICE
Juniper Networks hardware and soware products are Year 2000 compliant. Junos OS has no known me-related
limitaons through the year 2038. However, the NTP applicaon is known to have some diculty in the year 2036.
END USER LICENSE AGREEMENT
The Juniper Networks product that is the subject of this technical documentaon consists of (or is intended for use
with) Juniper Networks soware. Use of such soware is subject to the terms and condions of the End User License
Agreement ("EULA") posted at hps://support.juniper.net/support/eula/. By downloading, installing or using such
soware, you agree to the terms and condions of that EULA.
ii

Table of Contents
About This Guide | ix
1
Overview
EX9253 System Overview | 2
EX9253 Switch Hardware Overview | 2
EX9253 Switch Conguraons | 7
EX9253 Switch Hardware and CLI Terminology Mapping | 10
EX9253 Chassis | 12
Chassis Physical Specicaons of an EX9253 Switch | 12
Field-Replaceable Units in an EX9253 Switch | 13
Host Subsystem in an EX9253 Switch | 15
Understanding EX9253 Switch Component and Funconality Redundancy | 20
EX9253 Cooling System | 21
EX9253 Power System | 27
EX9253 Line Cards | 34
EX9253-6Q12C Line Card | 35
EX9253-6Q12C-M Line Card | 41
2
Site Planning, Preparaon, and Specicaons
Site Preparaon Checklist for an EX9253 Switch | 48
EX9253 Site Guidelines and Requirements | 50
Environmental Requirements and Specicaons for an EX9253 Switch | 50
General Site Guidelines | 51
Site Electrical Wiring Guidelines | 52
Clearance Requirements for Airow and Hardware Maintenance for an EX9253 Switch | 53
Rack and Cabinet Requirements for EX9253 Switches | 54
iii

EX9253 Network Cable and Transceiver Planning | 57
Pluggable Transceivers Supported on an EX9253 Switch | 57
SFP+ Direct Aach Copper Cables for EX Series Switches | 58
QSFP+ Direct Aach Copper Cables for EX Series Switches | 61
Understanding EX Series Switches Fiber-Opc Cable Signal Loss, Aenuaon, and Dispersion | 62
Calculang the Fiber-Opc Cable Power Budget for EX Series Devices | 64
Calculang the Fiber-Opc Cable Power Margin for EX Series Devices | 65
EX9253 Management Cable Specicaons and Pinouts | 67
Management Cable Specicaons | 67
Console Port Connector Pinout Informaon | 68
USB Port Specicaons for an EX Series Switch | 69
RJ-45 to DB-9 Serial Port Adapter Pinout Informaon | 69
RJ-45 Management Port Connector Pinout Informaon | 70
3
Inial Installaon and Conguraon
Unpacking and Mounng the EX9253 Switch | 73
Unpacking an EX9253 Switch | 73
Parts Inventory (Packing List) for an EX9253 Switch | 74
Unpacking a Line Card Used in an EX9253 Switch | 76
Register Products—Mandatory to Validate SLAs | 77
Installing and Connecng an EX9253 Switch | 77
Mounng an EX9253 Switch on a Rack or Cabinet | 78
Connecng the EX9253 to Power | 82
Connecng Earth Ground to an EX9253 Switch | 82
Connecng AC Power to an EX9253 Switch and Powering on the Switch | 85
Connecng DC Power to an EX9253 Switch and Powering on the Switch | 87
Connecng the EX9253 to External Devices | 91
Connect a Device to a Network for Out-of-Band Management | 91
iv

Connect a Device to a Management Console Using an RJ-45 Connector | 92
Connecng the EX9253 Switch to External Clocking and Timing Devices | 94
Connecng 1-PPS and 10-MHz Timing Devices to the Switch | 94
Connecng a BITS External Clocking Device to the Switch | 95
Conguring Clock Synchronizaon Interface on EX9251 and EX9253 Switches | 95
Conguring Clock Synchronizaon Opons | 95
Connecng the EX9253 to the Network | 99
Install a Transceiver | 99
Connect a Fiber-Opc Cable | 102
Conguring Junos OS on the EX9253 | 103
EX9253 Switch Default Conguraon | 103
Connecng and Conguring an EX9253 Switch | 104
4
Maintaining Components
Roune Maintenance Procedures for EX9253 Switches | 110
Maintaining the EX9253 Cooling System | 110
Removing a Fan Tray from an EX9253 Switch | 111
Installing a Fan Tray in an EX9253 Switch | 112
Maintaining the Fan Tray in EX9253 Switches | 114
Removing the Air Filter Unit from an EX9253 Switch | 116
Installing the Air Filter Unit in an EX9253 Switch | 117
Removing the Air Filter from the Air Filter Unit in an EX9253 Switch | 118
Installing the Air Filter in the Air Filter Unit in an EX9253 Switch | 120
Maintaining the Air Filter in EX9253 Switches | 121
Maintaining the EX9253 Power System | 122
Powering O an EX9253 Switch | 122
Removing an AC Power Supply from an EX9253 Switch | 124
Installing an AC Power Supply in an EX9253 Switch | 125
v

Removing a DC Power Supply in an EX9253 Switch | 127
Installing a DC Power Supply in an EX9253 Switch | 129
Maintaining Power Supplies in EX9253 Switches | 131
Maintaining the EX9253 Roung Engine | 132
Removing a Roung Engine from an EX9253 Switch | 132
Installing a Roung Engine in an EX9253 Switch | 134
Maintaining the EX9253 Line Cards | 136
Handling and Storing Line Cards | 137
Holding a Line Card | 137
Storing a Line Card | 139
Maintaining Line Card Cables | 140
Removing a Line Card from an EX9253 Switch | 140
Installing a Line Card in an EX9253 Switch | 143
Maintaining Transceivers | 145
Remove a Transceiver | 146
Install a Transceiver | 148
Remove a QSFP28 Transceiver | 151
Install a QSFP28 Transceiver | 153
Maintain Fiber-Opc Cables | 155
Connect a Fiber-Opc Cable | 156
Disconnect a Fiber-Opc Cable | 157
How to Handle Fiber-Opc Cables | 157
5
Troubleshoong Hardware
Troubleshoong EX9253 Components | 160
Troubleshoong the Cooling System in an EX9253 Switch | 160
Troubleshoong the Power Supply in an EX9253 Switch | 161
Troubleshoong Line Cards in an EX9253 Switch | 163
vi

Troubleshoot Temperature Alarms in EX Series Switches | 165
Understand Alarm Types and Severity Levels on EX Series Switches | 171
Chassis Component Alarm Condions on EX9253 Switches | 172
Monitor System Log Messages | 179
6
Contacng Customer Support and Returning the Chassis or Components
Returning an EX9253 Chassis or Components | 188
Returning an EX9253 Switch or Component for Repair or Replacement | 188
Locang the Serial Number on an EX9253 Switch or Component | 189
Locang the Serial Number ID Label on an EX9253 Switch Chassis | 190
Locang Serial Number ID Labels on FRU Components | 190
Contact Customer Support to Obtain Return Material Authorizaon | 193
Packing an EX9253 Switch or Component | 194
Packing an EX9253 Switch | 195
Packing EX9253 Switch Components for Shipping | 196
7
Safety and Compliance Informaon
General Safety Guidelines and Warnings | 199
Denions of Safety Warning Levels | 200
Qualied Personnel Warning | 202
Warning Statement for Norway and Sweden | 202
Fire Safety Requirements | 203
Installaon Instrucons Warning | 204
Chassis and Component Liing Guidelines | 205
Restricted Access Warning | 205
Ramp Warning | 207
Rack-Mounng and Cabinet-Mounng Warnings | 207
Grounded Equipment Warning | 211
Radiaon from Open Port Apertures Warning | 212
vii

Laser and LED Safety Guidelines and Warnings | 213
Maintenance and Operaonal Safety Guidelines and Warnings | 216
General Electrical Safety Guidelines and Warnings | 222
Acon to Take Aer an Electrical Accident | 223
Prevenon of Electrostac Discharge Damage | 224
AC Power Electrical Safety Guidelines | 225
AC Power Disconnecon Warning | 226
DC Power Electrical Safety Guidelines | 227
DC Power Disconnecon Warning | 228
DC Power Grounding Requirements and Warning | 230
DC Power Wiring Sequence Warning | 230
DC Power Wiring Terminaons Warning | 232
Mulple Power Supplies Disconnecon Warning | 233
TN Power Warning | 234
Agency Approvals for EX9253 Switches | 235
Compliance Statements for EMC Requirements for EX Series Switches | 237
Compliance Statements for Acousc Noise for EX Series Switches | 242
viii

About This Guide
Use this guide to install hardware and perform inial soware conguraon, roune maintenance, and
troubleshoong for the EX9253 switch. Aer compleng the installaon and basic conguraon
procedures covered in this guide, refer to the Junos OS documentaon for informaon about further
soware conguraon.
RELATED DOCUMENTATION
EX9253 Switch Quick Start
ix

1
CHAPTER
Overview
EX9253 System Overview | 2
EX9253 Chassis | 12
EX9253 Cooling System | 21
EX9253 Power System | 27
EX9253 Line Cards | 34