Juniper MX204 Istruzioni per l'installazione

MX204 Universal Routing Platform

Hardware Guide

Published

2019-10-14

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.

MX204 Universal Routing Platform Hardware Guide

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.

Table of Contents

About the Documentation | xi

Documentation and Release Notes | xi

Using the Examples in This Manual | xi

Merging a Full Example | xii

Merging a Snippet | xiii

Documentation Conventions | xiii

Documentation Feedback | xvi

Requesting Technical Support | xvi

Self-Help Online Tools and Resources | xvii

Creating a Service Request with JTAC | xvii

Overview

MX204 Router Overview | 21

Benefits of MX204 Router | 21

System Overview | 22

MX204 Chassis | 23

MX204 Chassis Description | 23

MX204 Component Redundancy | 25

MX204 Field-Replaceable Units | 26

MX204 Hardware Components and CLI Terminology | 26

MX204 Front and Rear Panel Components | 27

Front Panel Components | 27

Rear Panel Components | 28

Alarm LEDs on the MX204 Front Panel | 28

MX204 Cooling System | 29

MX204 Cooling System Description | 29

Fan Trays | 29

Airflow | 30

Power Supply Cooling System | 31

MX204 Fan Status LED | 31

iii

MX204 AC Power System | 32

MX204 Power System Description | 33

AC Power Supply Description | 34

DC Power Supply Description | 34

MX204 Power Supply Module LEDs | 35

AC Power Supply Module LEDs | 35

DC Power Supply Module LEDs | 37

MX204 Router AC Power Specifications | 38

AC Power Circuit Breaker Requirements for the MX204 Router | 39

AC Power Cord Specifications for MX204 Routers | 40

MX204 DC Power System | 42

MX204 Router DC Power Specifications | 42

DC Power Circuit Breaker Requirements for the MX204 Router | 43

DC Power Source Cabling for MX204 Router | 44

DC Power Cable Specifications for MX204 Router | 45

DC Power Cable Lug Specifications | 45

DC Power Cable Specifications | 45

MX204 Host Subsystem | 46

MX204 Routing Engine Description | 46

Routing Engine Functions | 46

Routing Engine Components | 47

Routing Engine Front Panel | 47

Routing Engine Interface Ports | 48

MX204 Routing Engine LEDs | 49

Site Planning, Preparation, and Specifications

MX204 Site Preparation Checklist | 53

MX204 Site Guidelines and Requirements | 54

MX204 Router Physical Specifications | 55

MX204 Router Environmental Specifications | 55

MX204 Router Grounding Specifications | 57

Grounding Points Specifications | 57

Grounding Cable Lug Specifications | 57

Grounding Cable Specifications | 58

MX204 Router Cabinet Requirements and Specifications | 58

MX204 Router Clearance Requirements for Airflow and Hardware Maintenance | 60

MX204 Router Rack Requirements | 61

MX204 Network Cable and Transceiver Planning | 63

Calculating Power Budget and Power Margin for Fiber-Optic Cables | 63

Calculating Power Budget for Fiber-Optic Cable | 63

Calculating Power Margin for Fiber-Optic Cable | 64

CB-RE and RCB Interface Cable and Wire Specifications for MX Series Routers | 65

Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 66

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 66

Attenuation and Dispersion in Fiber-Optic Cable | 67

MX204 Management and Console Port Specifications and Pinouts | 68

RJ-45 Connector Pinouts for MX Series CB-RE or RCB Auxillary and Console Ports | 68

RJ-45 Connector Pinouts for an MX Series CB-RE or RCB Management Port | 69

MX204 Power Planning | 70

Power Consumption for an AC-Powered MX204 Router | 70

Power Requirements for MX204 Components | 70

Calculating System Thermal Output | 71

Power Consumption for a DC-Powered MX204 Router | 72

Power Requirements for MX204 Components | 72

Calculating System Thermal Output | 73

Initial Installation and Configuration

MX204 Installation Overview | 77

Unpacking the MX204 | 78

Tools and Parts Required to Unpack the MX204 Router | 78

Unpacking MX204 Router | 79

Verifying the MX204 Router Parts Received | 80

Installing the MX204 | 81

Tools Required to Install the MX204 Chassis in Rack | 82

Installing the MX204 Chassis in a Rack | 82

Installing the MX204 Chassis in a 19-in. Rack | 83

Installing the MX204 in a 21-in. ETSI Rack | 85

Connecting the MX204 to Power | 89

Tools and Parts Required for MX204 Router Grounding and Power Connections | 89

Grounding the MX204 Router | 90

Connecting Power to an AC-Powered MX204 Router | 91

Powering On an AC-Powered MX204 Router | 94

Connecting Power to a DC-Powered MX204 Router | 95

Powering On a DC-Powered MX204 Router | 98

Powering Off the MX204 Router | 99

Connecting the MX204 to the Network | 101

Tools and Parts Required to Connect the MX204 Router to External Devices | 101

Connecting the MX204 Router to External Devices and Cables | 102

Connecting the Router to a Network for Out-of-Band Management | 103

Connecting the Router to a Console Device | 103

Connecting the Router to External Clocking and Timing Devices | 105

Performing the Initial Software Configuration for the MX204 Router | 108

Maintaining Components

Maintaining MX204 Components | 115

Routine Maintenance Procedures for MX204 Routers | 115

Maintaining the MX204 Routing Engine | 115

Replace an SFP+ Transceiver | 117

Remove an SFP+ Transceiver | 117

Install an SFP+ Transceiver | 119

Replace a QSFP28 Transceiver | 119

Remove a QSFP28 Transceiver | 120

Install a QSFP28 Transceiver | 121

Maintaining MX204 Cooling System Components | 122

Maintaining the MX204 Fan Module | 122

Replacing an MX204 Fan Module | 124

Removing an MX204 Fan Module | 124

Installing an MX204 Fan Module | 125

Maintaining MX204 Power System Components | 126

Maintaining the MX204 Power Supplies | 126

Replacing an MX204 AC Power Supply | 128

Removing an MX204 AC Power Supply | 128

Installing an MX204 AC Power Supply | 129

Replacing an MX204 DC Power Supply | 130

Removing an MX204 DC Power Supply | 130

Installing an MX204 DC Power Supply | 132

Contacting Customer Support and Returning the Chassis or Components

Contacting Customer Support and Returning the Chassis or Components | 137

Contacting Customer Support | 137

Contacting Customer Support to Obtain Return Material Authorization | 138

Locating the Serial Number on an MX204 Router or Component | 139

Listing the Chassis and Component Details Using the CLI | 139

Locating the Chassis Serial Number ID Label on an MX204 | 140

Locating the Serial Number ID Labels on MX204 Power Supplies | 140

vii

Locating the Serial Number ID Label on an MX204 Fan Module | 141

Guidelines for Packing Hardware Components for Shipment | 142

Safety and Compliance Information

Definitions of Safety Warning Levels | 145

General Safety Guidelines and Warnings | 147

General Safety Warnings for Juniper Networks Devices | 148

Qualified Personnel Warning | 149

Restricted-Access Area Warning | 150

Fire Safety Requirements | 152

Fire Suppression | 152

Fire Suppression Equipment | 153

Installation Instructions Warning | 154

Chassis and Component Lifting Guidelines | 154

Ramp Warning | 155

Rack-Mounting and Cabinet-Mounting Warnings | 155

Laser and LED Safety Guidelines and Warnings | 159

General Laser Safety Guidelines | 159

Class 1 Laser Product Warning | 160

Class 1 LED Product Warning | 161

Laser Beam Warning | 162

Radiation from Open Port Apertures Warning | 163

Maintenance and Operational Safety Guidelines and Warnings | 164

Battery Handling Warning | 165

Jewelry Removal Warning | 166

Lightning Activity Warning | 168

Operating Temperature Warning | 169

Product Disposal Warning | 171

General Electrical Safety Guidelines and Warnings | 172

viii

Prevention of Electrostatic Discharge Damage | 173

Site Electrical Wiring Guidelines | 174

AC Power Electrical Safety Guidelines | 175

AC Power Disconnection Warning | 177

DC Power Disconnection Warning | 178

DC Power Grounding Requirements and Warning | 180

DC Power Wiring Sequence Warning | 182

DC Power Wiring Terminations Warning | 185

Multiple Power Supplies Disconnection Warning | 188

TN Power Warning | 189

Action to Take After an Electrical Accident | 189

Agency Approvals for MX204 Router | 190

Compliance Statements for NEBS | 191

Compliance Statements for EMC Requirements | 192

Canada | 192

European Community | 192

Israel | 193

Japan | 193

United States | 193

Compliance Statements for Environmental Requirements | 194

Compliance Statements for Acoustic Noise for MX204 Router | 194

About the Documentation

IN THIS SECTION

Documentation and Release Notes | xi

Using the Examples in This Manual | xi

Documentation Conventions | xiii

Documentation Feedback | xvi

Requesting Technical Support | xvi

Use this guide to install hardware and perform initial software configuration, routine maintenance, and

troubleshooting for the MX204 Universal Routing Platform. After completing the installation and basic

configuration procedures covered in this guide, refer to the Junos OS documentation for information about

further software configuration.

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.

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