Juniper EX9253 Montageanleitung

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

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.

Table of Contents

About This Guide | ix

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

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

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

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

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

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

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

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

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

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

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.

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