Juniper MX2020 Istruzioni per l'installazione

MX2020 Universal Routing Platform

Hardware Guide

Published

2019-12-03

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.

MX2020 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 | xxi

Documentation and Release Notes | xxi

Using the Examples in This Manual | xxi

Merging a Full Example | xxii

Merging a Snippet | xxiii

Documentation Conventions | xxiii

Documentation Feedback | xxvi

Requesting Technical Support | xxvi

Self-Help Online Tools and Resources | xxvii

Creating a Service Request with JTAC | xxvii

Overview

MX2020 System Overview and Architecture | 3

MX2020 Universal Edge Router Overview | 3

MX Series Router Architecture | 4

MX2020 Chassis Description | 6

MX2020 Backplane Description | 12

MX2020 Component Redundancy | 13

MX2020 Field-Replaceable Units | 19

MX Series Router Packet Forwarding Engine (PFE) Architecture | 21

Line Cards Supported on MX Series Routers | 22

FPCs and PICs | 23

DPCs | 23

MPCs and MICs | 24

Switch Fabric Boards (SFB, SFB2, SFB3) | 24

Switch Control Boards | 25

MX2000 ADC | 25

Routing Engines and CB-REs | 25

Ethernet Frame Counts and Statistics on MX Series Routers | 26

MX2020 Router Hardware Components and CLI Terminology | 26

iii

Understanding Trio Layer 2 Feature Parity | 30

Alarm and Display Components | 31

MX2020 Craft Interface Description | 31

MX2020 Alarm Relay Contacts on the Craft Interface | 33

MX2020 Alarm LEDs and Alarm Cutoff/Lamp Test Button | 34

Cable and Rack Management | 37

MX2020 Cable Management Description | 37

Standard Cable Management System | 37

Extended Cable Management System | 40

MX2020 Rack-Mounting Hardware | 42

Cooling System Components and Descriptions | 45

MX2020 Cooling System Description | 45

MX2020 Fan Tray LED | 48

Host Subsystem Components | 49

MX2000 Host Subsystem CB-RE Description | 49

RE-MX2000-1800x4 CB-RE Description | 50

RE-MX2000-1800x4 CB-RE Front Panel | 51

RE-MX2000-1800x4 CB-RE Components | 52

RE-MX2000-1800x4 CB-RE Software | 53

RE-MX2000-1800x4 CB-RE Boot Sequence | 53

REMX2K-X8-64G and REMX2K-X8-64G-LT CB-RE Description | 54

REMX2K-X8-64G CB-RE Components | 54

REMX2K-X8-64G and REMX2K-X8-64G-LT CB-RE Boot Sequence | 56

CB-RE LEDs | 56

REMX2K-X8-128G CB-RE Description | 60

REMX2K-X8-128G CB-RE Components | 60

REMX2K-X8-128G CB-RE LEDs | 62

REMX2K-X8-128G CB-RE Boot Sequence | 63

MX2000 Switch Fabric Board (SFB) Overview | 63

Interface Modules— ADCs, MPCs, and MICs | 65

MX2000 Modular Interface Card (MIC) Description | 65

MICs Supported by MX Series Routers | 66

MX2020 Modular Interface Card LEDs | 76

MX2020 Modular Port Concentrator (MPC) Description | 76

MPC Components | 78

MPCs Supported by MX Series Routers | 79

MX2020 Modular Port Concentrator LEDs | 83

MX2000 Adapter Card (ADC) Description | 84

MPC Terminology | 85

MX2020 Port and Interface Numbering | 87

Power Subsystem | 91

MX2020 Power Subsystem Description | 91

MX2020 Power Midplane Description | 96

MX2000 Three-Phase Delta AC Power Distribution Module Description | 96

MX2000 Three-Phase Wye AC Power Distribution Module Description | 98

MX2000 Seven-Feed Single-Phase AC Power Distribution Module Description | 101

MX2000 Nine-Feed Single-Phase AC Power Distribution Module Description | 102

MX2000 Three-Phase Delta and Wye AC Power Distribution Module LEDs | 103

MX2000 AC Power Supply Module Description | 103

MX2020 AC Power Supply Module LEDs | 106

MX2020 DC Power Distribution Module (-48 V) Description | 107

MX2000 DC Power Distribution Module (240 V China) Description | 109

MX2020 DC Power Distribution Module (-48 V) LEDs | 110

MX2000 DC Power Distribution Module (240 V China) LEDs | 111

MX2020DC Power Supply Module (-48 V) Description | 112

MX2000 DC Power Supply Module (240 V China) Description | 115

MX2020 DC and Power Supply Module LEDs | 117

Site Planning, Preparation, and Specifications

Planning and Preparing the Site | 121

Overview of Preparing the Site for the MX2020 Router | 121

MX2020 Site Preparation Checklist | 123

MX2020 Physical Specifications | 125

MX2020 Rack Requirements | 130

Rack Size and Strength | 130

Spacing of Mounting Bracket Holes | 132

Connection to the Building Structure | 132

MX2020 Cabinet Size and Clearance Requirements | 133

Clearance Requirements for Airflow and Hardware Maintenance for the MX2020 Router | 133

MX2020 Cabinet Airflow Requirements | 136

MX2020 Router Environmental Specifications | 137

MX2000 Router Grounding Specifications | 138

MX2000 Series Chassis Grounding Points Specifications | 139

MX2000 Series Router Grounding Cable Lug Specifications | 139

MX2000 Series Router Grounding Cable Specifications | 140

MX2020 Chassis Moving Guidelines | 141

MX2020 Moving Requirements and Guidelines Using a Router Transport Kit | 142

Router Transport Kit Turning Radius | 142

Router Transport Kit Requirements | 143

Rack-Mounting Requirements | 146

Transceiver and Cable Specifications | 149

Calculating Power Budget and Power Margin for Fiber-Optic Cables | 149

Calculating Power Budget for Fiber-Optic Cable | 149

Calculating Power Margin for Fiber-Optic Cable | 150

Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 151

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 151

Attenuation and Dispersion in Fiber-Optic Cable | 152

CB-RE and RCB Interface Cable and Wire Specifications for MX Series Routers | 153

Pinout Specifications | 155

RJ-45 Connector Pinouts for MX Series CB-RE Auxiliary and Console Ports | 155

RJ-45 Connector Pinouts for an MX Series CB-RE or RCB Management Port | 156

Management Cable Specifications | 157

Console Port Connector Pinout Information | 157

RJ-45 to DB-9 Serial Port Adapter Pinout Information | 158

Mini-USB Port Pinout Specifications | 159

RJ-45 Management Port Connector Pinout Information | 160

RJ-45 Port, QSFP+ Port, QSFP28 Port, SFP+ Port, and SFP Port Connector Pinout Information | 160

AC Power Requirements, Specifications, and Guidelines | 167

MX2020 AC Power Requirements | 167

MX2000 AC Power Cord Specifications | 176

MX2000 AC Power System Electrical Specifications | 179

AC Power Supply Input Fuses | 180

MX2000 Router Grounding Specifications | 181

MX2000 Series Chassis Grounding Points Specifications | 182

MX2000 Series Router Grounding Cable Lug Specifications | 182

MX2000 Series Router Grounding Cable Specifications | 183

MX2000 Three-Phase Delta AC Power Distribution Module Electrical Specifications | 184

MX2000 Three-Phase Wye AC Power Distribution Module Electrical Specifications | 185

MX2000 Single-Phase AC Power Distribution Module Electrical Specifications | 186

Calculating AC Power Requirements for MX2020 Routers | 186

Mapping Input Power from AC Power Distribution Modules to AC Power Supply Modules on

MX2000 Routers | 190

DC Power Requirements, Specifications, and Guidelines | 193

MX2020 DC Power Requirements | 193

MX2020 DC Power Distribution Description | 201

MX2020 DC Power Distribution (240 V China) Description | 203

MX2000 Router DC Power Subsystem Electrical Specifications | 205

DC Power Supply Input Fuses | 206

vii

MX2000 Router DC (240 V China) Power Subsystem Electrical Specifications | 207

DC Power Supply Input Fuses | 208

Determining DC Power Requirements for Your MX2020 Router | 209

MX 2020 DC Power Subsystem Components | 209

Understanding Power Zones in the MX2020 DC Power Subsystem | 209

Calculating the DC Power Requirements for Your MX2020 Router | 213

DC Power (-48 V) Circuit Breaker Requirements for the MX2020 Router | 215

DC Power (240 V China) Circuit Breaker Requirements for the MX2000 Router | 216

DC Power Cable Specifications for the MX2020 Router | 216

Initial Installation and Configuration

Installation Overview | 221

Installing an MX2020 Router Overview | 221

Tools and Parts Required to Unpack the MX2020 Router | 223

Tools Required to Install the MX2020 Router Using a Pallet Jack | 223

Tools Required to Install the MX2020 Router Using a Router Transport Kit | 224

Tools and Parts Required for Connecting an MX2000 Router to Power | 224

Tools and Parts Required to Maintain the MX2020 Hardware Components | 225

Tools and Parts Required for MX2020 Router Connections | 226

Unpacking the Router | 227

Overview of Unpacking the MX2020 Router | 227

Unpacking the MX2020 Router | 228

Verifying the MX2020 Parts Received | 232

Unpacking the Router Transport Kit | 235

Installing the Mounting Hardware | 239

Installing the MX2020 Mounting Hardware for a Four-Post Rack or Cabinet | 239

Installing Cage Nuts, If Needed | 239

Installing the Four-Post Mounting Shelf | 241

Installing the Router | 245

Removing Components from the MX2020 Router Chassis Before Installing it in a Rack | 245

Removing the Power Distribution Modules Before Installing an MX2020 Router | 246

Removing the Power Supply Modules Before Installing an MX2020 Router | 248

viii

Removing the Fan Trays Before Installing an MX2020 Router | 251

Removing the SFBs Before Installing an MX2020 Router | 253

Removing the MPCs with Adapter Card Before Installing an MX2020 Router | 254

Removing the MPCs without an Adapter Card Before Installing an MX2020 Router | 255

Removing the CB-REs Before Installing the MX2020 Router | 256

Installing a MX2020 Router Using a Pallet Jack Overview | 258

Installing the Pallet Jack Attachment | 259

Installing the MX2020 Router Using a Pallet Jack with Attachment | 260

Installing a MX2020 Router Using a Router Transport Kit Overview | 265

Installing the Router Transport Kit on the MX2020 Router | 265

Securing the MX2020 Router to the Router Transport Platform | 268

Installing the MX2020 Router Using a Router Transport Kit | 270

Reinstalling Components in the MX2020 Router After Installing in a Rack | 277

Reinstalling the Power Distribution Modules After Installing the MX2020 Router in a Rack | 278

Reinstalling the Power Supply Modules After Installing the MX2020 Router | 281

Reinstalling the Fan Trays After Installing the MX2020 In a Rack | 283

Reinstalling the SFBs After Installing the MX2020 Router in a Rack | 285

Reinstalling the Adapter Card After Installing the MX2020 Router in a Rack | 286

Reinstalling MPCs After Installing the MX2020 Router in a Rack | 287

Reinstalling the CB-REs After Installing the MX2020 Router in a Rack | 288

Connecting the MX2020 to Ground | 291

Grounding an MX2000 Router | 291

Providing Power to the MX2020 | 293

Connecting Power to an MX2000 Single-Phase AC Power Distribution Module | 293

Connecting AC Power to an MX2000 Router with Three-Phase Delta AC Power Distribution

Modules | 295

Connecting AC Power to an MX2000 Router with Three-Phase Wye AC Power Distribution

Modules | 300

Mapping Input Power from AC Power Distribution Modules to AC Power Supply Modules on

MX2000 Routers | 304

Installing MX2020 AC Power Supply Modules | 307

Installing MX2000 Router DC Power Supply Modules (-48 V) | 309

Installing MX2000 Router DC Power Supply Modules (240 V China) | 313

Connecting Power to a DC-Powered MX2020 Router with Power Distribution Modules (-48

V) | 317

Connecting Power to a DC-Powered MX2000 Router with DC Power Distribution Modules (240

V China) | 321

Connecting an MX2000 DC Router Power Distribution Module (-48 V) Cable | 322

Connecting an MX2000 DC Router Power Distribution Module (240 V China) Cable | 325

Powering On the DC-Powered (-48 V) MX2020 Router | 327

Powering On the DC-Powered (240 V China) MX2000 Router | 329

Powering On a Three-Phase AC-Powered MX2000 Router | 331

Connecting the MX2020 to the Network | 333

Connecting the MX2020 Router to Management and Alarm Devices | 333

Connecting the MX2020 Router to a Network for Out-of-Band Management | 333

Connecting the MX2020 Router to a Console or Auxiliary Device | 334

Connecting an MX2020 Router to an External Alarm-Reporting Device | 336

Connecting the MX2020 Router to a Network for Out-of-Band Management | 337

Connecting the MX2020 Router to a Console or Auxiliary Device | 338

Connecting an MX2020 Router to an External Alarm-Reporting Device | 340

Connecting the Alarm Relay Wires to the MX2020 Craft Interface | 342

Disconnecting the Alarm Relay Wires from the MX2020 Craft Interface | 343

Connecting MPC or MIC Cables to the MX2020 Router | 344

Configuring the Junos OS Software | 347

Initially Configuring the MX2020 Router | 347

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