Juniper MX2008 Installation instructions

MX2008 Universal Routing Platform
Hardware Guide
Published
2020-03-20

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.
MX2008 Universal Routing Platform Hardware Guide
Copyright © 2020 Juniper Networks, Inc. All rights reserved.
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.
ii

Table of Contents
About the Documentation | xvii
Documentation and Release Notes | xvii
Using the Examples in This Manual | xvii
Merging a Full Example | xviii
Merging a Snippet | xix
Documentation Conventions | xix
Documentation Feedback | xxii
Requesting Technical Support | xxii
Self-Help Online Tools and Resources | xxiii
Creating a Service Request with JTAC | xxiii
Overview
1
MX2008 Router Overview | 25
Benefits of the MX2008 Router | 25
System Overview | 25
MX2008 Chassis | 27
MX2008 Chassis Description | 27
MX2008 Backplane Description | 33
MX2008 Component Redundancy | 34
MX2008 Field-Replaceable Units | 38
MX2008 Router Hardware Components and CLI Terminology | 40
MX2008 Craft Interface Description | 43
MX2008 Alarm Relay Contacts on the Craft Interface | 45
MX2008 Alarm LEDs and Alarm Cutoff/Lamp Test Button | 45
MX2008 Component LEDs on the Craft Interface | 47
MX2008 Host Subsystem LEDs and Buttons on the Craft Interface | 47
MX2008 Power Supply Module LEDs on the Craft Interface | 48
MX2008 Line-Card LEDs and Buttons on the Craft Interface | 48
MX2008 SFB LED and Buttons on the Craft Interface | 49
MX2008 Fan Tray LEDs on the Craft Interface | 49
iii

MX2008 Cable Manager Description | 50
Standard Cable Manager | 50
Extended Cable Manager | 52
MX2008 Rack-Mounting Hardware | 53
MX2008 Cooling System | 54
MX2008 Cooling System Description | 54
MX2008 Fan Tray LED | 57
MX2008 AC Power System | 58
MX2008 Power System Description | 58
MX2008 Power Midplane Description | 63
MX2008 AC Power Supply Module Description | 63
MX2008 AC Power Supply Module LEDs | 65
MX2008 Three-Phase Delta AC Power Distribution Module Description | 67
MX2008 Three-Phase Wye AC Power Distribution Module Description | 69
MX2008 Nine-Feed Single-Phase AC Power Distribution Module Description | 71
MX2008 Seven-Feed Single Phase AC Power Distribution Module Description | 72
MX2008 Three-Phase Delta and Wye AC Power Distribution Module LEDs | 73
MX2008 AC Power Requirements | 74
MX2008 AC Power Cord Specifications | 82
MX2008 AC Power System Electrical Specifications | 85
AC Power Supply Input Fuses | 86
MX2008 AC Power Electrical Safety Guidelines | 87
MX2008 Three-Phase Delta AC Power Distribution Module Electrical Specifications | 89
MX2008 Three-Phase Wye AC Power Distribution Module Electrical Specifications | 90
MX2008 Single-Phase AC Power Distribution Module Electrical Specifications | 90
Mapping Input Power from AC Power Distribution Modules to AC Power Supply Modules on
MX2008 Router | 91
MX2008 DC Power System | 93
MX2008 Seven-Feed DC Power Distribution Module Description | 94
MX2008 DC Power Distribution Module (-48 V) Description | 96
MX2000 DC Power Distribution Module (240 V China) Description | 97
MX2008 DC Power Distribution Module (-48 V) LEDs | 98
MX2000 DC Power Distribution Module (240 V China) LEDs | 99
iv

MX2008 DC Power Supply Module (-48 V) Description | 100
MX2000 DC Power Supply Module (240 V China) Description | 102
MX2008 DC Power Supply Module LEDs | 104
MX2008 DC Power Requirements | 105
MX2008 DC Power Distribution Description (-48 V) | 113
MX2008 DC Power Distribution Description (240 V China) | 115
MX2008 DC Power (-48 V) System Electrical Specifications | 117
MX2008 Router DC (240 V China) System Electrical Specifications | 118
DC Power Supply Input Fuses | 119
DC Power (-48 V) Circuit Breaker Requirements for the MX2008 Router | 119
DC Power (240 V China) Circuit Breaker Requirements for the MX2000 Router | 120
DC Power Cable Specifications for the MX2008 Router | 120
MX2008 Host Subsystem | 122
MX2008 Host Subsystem Description | 123
MX2008 Routing and Control Board (MX2008 RCB) Description | 124
Supported RCBs | 124
RCB Function | 125
RCB Slots | 125
RCB Front Panel | 125
RCB Interface Ports | 127
MX2008 RCB LEDs | 128
Routing Engine Specifications | 131
Supported Routing Engines by Router | 138
M7i Routing Engines | 139
M10i Routing Engines | 139
M40e Routing Engines | 140
M120 Routing Engines | 140
M320 Routing Engines | 141
MX5, MX10, MX40, and MX80 Routing Engine | 142
MX104 Routing Engines | 142
MX204 Routing Engine | 143
MX240 Routing Engines | 143
MX480 Routing Engines | 144
MX960 Routing Engines | 146
v

MX2008 Routing Engines | 147
MX2010 Routing Engines | 147
MX2020 Supported Routing Engines | 148
MX10003 Routing Engines | 149
MX10008 Routing Engines | 149
PTX1000 Routing Engines | 150
PTX3000 Routing Engines | 150
PTX5000 Routing Engines | 151
PTX10008 and PTX10016 Routing Engines | 152
T320 Routing Engines | 152
T640 Routing Engines | 153
T1600 Routing Engines | 154
T4000 Routing Engines | 155
TX Matrix Routing Engines | 156
TX Matrix Plus Routing Engines | 157
TX Matrix Plus (with 3D SIBs) Routing Engines | 157
MX2008 Switch Fabric Boards | 158
MX2008 Enhanced Switch Fabric Board (MX2008 SFB2) Description | 159
MX2008 SFB2 Slots | 159
MX2008 SFB2 Redundancy | 160
MX2008 SFB2 Components | 160
MX2008 SFB LED | 160
MX2008 Interface Modules | 162
MX2000 Adapter Card (ADC) Description | 162
MX2008 Modular Port Concentrator Description | 163
MPC Components | 165
MX2008 Modular Port Concentrator LEDs | 166
MPCs Supported by MX Series Routers | 166
MX2008 MPC Terminology | 171
MX2008 Modular Interface Card Description | 172
MICs Supported by MX Series Routers | 173
MX2008 Modular Interface Card LEDs | 183
MX2008 Ports and Interfaces | 184
vi

Site Planning, Preparation, and Specifications
2
MX2008 Site Guidelines and Requirements | 189
MX2008 Router Transport Kit Moving Requirements and Guidelines | 189
Router Transport Kit Turning Radius | 189
Router Transport Kit Requirements | 190
MX2008 Cabinet Airflow Requirements | 192
MX2008 Cabinet Size and Clearance Requirements | 193
MX2008 Chassis Moving Guidelines | 194
MX2008 Physical Specifications | 194
MX2008 Rack Requirements | 198
Rack Size and Strength | 199
Spacing of Mounting Bracket and Flange Holes | 201
Connection to the Building Structure | 202
MX2008 Router Environmental Specifications | 202
MX2008 Router Grounding Specifications | 203
MX2008 Chassis Grounding Points Specifications | 204
MX2008 Router Grounding Cable Lug Specifications | 204
MX2008 Router Grounding Cable Specifications | 205
MX2008 Site Preparation Checklist | 206
Clearance Requirements for Airflow and Hardware Maintenance for the MX2008 Router | 208
MX2008 Network Cable and Transceiver Planning | 210
Calculating Power Budget and Power Margin for Fiber-Optic Cables | 210
How to Calculate Power Budget for Fiber-Optic Cable | 211
How to Calculate Power Margin for Fiber-Optic Cable | 211
CB-RE and RCB Interface Cable and Wire Specifications for MX Series Routers | 213
Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 214
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 214
Attenuation and Dispersion in Fiber-Optic Cable | 214
MX2008 Management and Console Port Specifications and Pinouts | 215
RJ-45 Connector Pinouts for MX Series CB-RE or RCB Auxillary and Console Ports | 215
RJ-45 Connector Pinouts for an MX Series CB-RE or RCB Management Port | 216
vii

MX2008 Power Planning | 217
Calculating AC Power Requirements for MX2008 Routers | 217
Calculating DC Power Requirements for MX2008 Routers | 222
Powering MX2008 On and Off | 226
Powering Off the DC-Powered MX2008 Router | 226
Initial Installation and Configuration
3
Installing an MX2008 Router Overview | 229
Unpacking the MX2008 | 230
Unpacking the MX2008 Router Overview | 231
Tools and Parts Required to Unpack the MX2008 Router | 231
Unpacking the MX2008 Router | 231
Verifying the MX2008 Parts Received | 235
Unpacking the MX2008 Router Transport Kit | 237
Installing the MX2008 | 241
Installing the MX2008 Mounting Hardware for a Four-Post Rack or Cabinet | 241
Installing Cage Nuts, If Needed | 241
Installing the Four-Post Mounting Shelf | 243
Removing the Center-Mounting Brackets | 244
Removing Components from the MX2008 Router Chassis Before Installing It in a Rack | 245
Removing the Power Distribution Modules Before Installing an MX2010 Router with a
Pallet Jack | 246
Removing the Power Supply Modules Before Installing an MX2010 Router | 249
Removing the Fan Trays Before Installing an MX2010 Router with a Pallet Jack | 252
Removing the SFBs Before Installing an MX2010 Router with a Pallet Jack | 254
Removing the MPCs with Adapter Card Before Installing an MX2010 Router with a Pallet
Jack | 255
Removing the MPCs without an Adapter Card Before Installing an MX2010 Router with
a Pallet Jack | 256
Removing the CB-REs Before Installing the MX2010 Router with a Pallet Jack | 257
Installing an MX2008 Router Using a Pallet Jack Overview | 259
Tools Required to Install the MX2008 Router Using a Pallet Jack | 259
Installing the Pallet Jack Attachment | 260
Installing the MX2008 Router Using a Pallet Jack with Attachment | 261
viii

Installing an MX2008 Router Using a Router Transport Kit Overview | 265
Tools Required to Install the MX2008 Router Using a Router Transport Kit | 266
Installing the Router Transport Kit on the MX2008 | 267
Securing the MX2008 Router to the Router Transport Platform | 269
Using the Router Transport Kit to Install the MX2008 Router in a Four-Post Rack | 272
Using the Router Transport Kit to Install the MX2008 Router in an Open-Frame Rack | 279
Reinstalling Components in the MX2008 Router After Initially Installing the Router in a
Rack | 284
Reinstalling the Power Distribution Modules After Installing the MX2010 Router with a
Pallet Jack | 285
Reinstalling the Power Supply Modules After Installing the MX2010 Router with a Pallet
Jack | 288
Reinstalling the Fan Trays After Installing the MX2010 Router with a Pallet Jack | 290
Reinstalling the SFBs After Installing the MX2010 Router with a Pallet Jack | 292
Reinstalling the Adapter Card After Installing the MX2010 Router with a Pallet Jack | 293
Reinstalling the MPCs After Installing the MX2010 Router with a Pallet Jack | 294
Reinstalling the CB-REs After Installing the MX2010 Router with a Pallet Jack | 295
Connecting the MX2008 to Earth Ground | 297
Tools and Parts Required for Connecting the MX2008 Router to Power | 297
Grounding an MX2008 Router | 298
Connecting the MX2008 to AC Power | 299
Installing an MX2008 Three-Phase Wye AC Power Cord | 300
Installing MX2008 AC Power Supply Modules | 304
Connecting AC Power to an MX2008 Router with Three-Phase Delta AC Power Distribution
Modules | 306
Connecting AC Power to an MX2000 Router with Three-Phase Wye AC Power Distribution
Modules | 311
Connecting Power to an MX2000 Single-Phase AC Power Distribution Module | 315
Connect Power to a Single-Phase Seven-Feed AC Power Distribution Module | 317
Powering On a Three-Phase AC-Powered MX2000 Router | 318
Connecting the MX2008 to DC Power | 320
Installing MX2008 DC Power Supply Modules (-48 V) | 320
Installing MX2000 Router DC Power Supply Modules (240 V China) | 323
Connecting an MX2008 DC Power Distribution Module (-48 V) Cable | 326
ix

Connecting Power to a DC-Powered MX2008 Router with Power Distribution Modules (-48
V) | 328
Connecting Power to a DC-Powered MX2000 Router with DC Power Distribution Modules
(240 V China) | 332
Connecting an MX2000 DC Router Power Distribution Module (240 V China) Cable | 333
Powering On the DC-Powered (-48 V) MX2008 Router | 335
Powering On the DC-Powered (240 V China) MX2000 Router | 337
Connecting the MX2008 to the Network | 339
Tools and Parts Required for MX2008 Router Connections | 339
Connecting the Alarm Relay Wires to the MX2008 Craft Interface | 340
Disconnecting the Alarm Relay Wires from the MX2008 Craft Interface | 341
Connecting MPC or MIC Cables to the MX2008 Router | 342
Initially Configuring the MX2008 Router | 343
Maintaining Components
4
Maintaining MX2008 Components | 350
Tools and Parts Required for Replacing MX2008 Hardware Components | 350
Tools and Parts Required to Remove Components from an MX2008 Router | 353
Tools and Parts Required to Maintain the MX2008 Hardware Components | 353
Replacing the MX2008 Extended Cable Manager | 354
Removing the MX2008 Extended Cable Manager | 354
Removing the MX2008 Extended DC Cable Manager | 355
Installing the MX2008 Extended Cable Manager | 356
Installing the MX2008 Extended DC Cable Manager | 357
Replacing the MX2008 Craft Interface | 358
Disconnecting the Alarm Relay Wires from the MX2008 Craft Interface | 359
Removing the MX2008 Craft Interface | 360
Installing the MX2008 Craft Interface | 360
Connecting the Alarm Relay Wires to the MX2008 Craft Interface | 361
Replacing the MX2008 Standard EMI Cover | 363
Removing the MX2008 Standard EMI Cover | 363
Installing the MX2008 Standard EMI Cover | 364
x

Replacing the MX2008 Extended EMI Cover | 365
Removing the MX2008 Extended EMI Cover | 366
Installing the MX2008 Extended EMI Cover | 367
Maintaining MX2008 Cooling System Components | 369
Replacing the MX2008 Air Filters | 369
Removing the MX2008 Air Filter | 369
Installing the MX2008 Air Filter | 372
Replacing an MX2008 Fan Tray | 374
Removing an MX2008 Fan Tray | 375
Installing an MX2008 Fan Tray | 376
Maintaining MX2008 Interface Modules | 378
Replacing an MX2008 MIC | 378
Removing an MX2008 MIC | 379
Installing an MX2008 MIC | 381
Installing an MX2008 Dual-Wide MIC | 384
Replacing a MIC Installed on an MPC6E | 387
Replacing an MX2008 MPC | 389
Removing an MX2008 MPC with Adapter Card | 390
Removing an MX2008 MPC from the Adapter Card | 392
Removing an MX2008 Adapter Card | 395
Installing an MX2008 Adapter Card | 396
Installing an MX2008 MPC into an Adapter Card | 398
Replacing a Cable on an MX2008 MPC or MIC | 401
Removing a Cable on an MX2008 MPC or MIC | 402
Installing a Cable on an MX2008 MPC or MIC | 403
Maintaining Switch Fabric Board | 406
Replacing an MX2008 SFB | 406
Removing an MX2008 SFB | 406
Installing an MX2008 SFB | 407
xi

Maintaining Host Subsystem components | 409
Replacing an MX2008 RCB | 409
Removing an MX2008 RCB | 410
Installing an MX2008 RCB | 411
Upgrading the MX2008 Routing and Control Board (RCBs) in a Redundant Host Subsystem | 414
Taking the Host Subsystem Offline | 414
Removing the Backup RCB | 415
Installing the REMX2008-X8-64G RCB | 416
Verifying and Configuring the Upgraded RCB as the Master | 417
Verifying and Configuring the Upgraded RCB as the Backup | 417
Upgrading the MX2008 Routing and Control Board (RCBs) in a Nonredundant Host
Subsystem | 418
Taking the Host Subsystem Offline | 418
Removing the MX2008 RCB | 419
Installing the MX2008 RCB | 420
Verifying and Configuring the Upgraded MX2008 RCB | 421
Maintaining MX2008 Power System Components | 422
Replacing an MX2008 AC Power Supply Module | 422
Removing an MX2008 AC Power Supply Module | 422
Installing an MX2008 AC Power Supply Module | 424
Replacing an MX2000 Three-Phase Delta AC Power Distribution Module | 426
Removing an MX2000 Three-Phase Delta AC Power Distribution Module | 427
Installing an MX2000 Router Three-Phase Delta AC Power Distribution Module | 432
Replacing an MX2008 Three-Phase Delta AC Power Cord | 439
Removing an MX2008 Three-Phase Delta AC Power Cord | 439
Installing an MX2008 Three-Phase Delta AC Power Cord | 442
Replacing an MX2020 Three-Phase Wye AC Power Distribution Module | 446
Removing an MX2000 Three-Phase Wye AC Power Distribution Module | 446
Installing an MX2000 Router Three-Phase Wye AC Power Distribution Module | 451
Replacing an MX2008 Three-Phase Wye AC Power Cord | 457
Removing an MX2008 Three-Phase Wye AC Power Cord | 458
Installing an MX2008 Three-Phase Wye AC Power Cord | 461
xii

Replacing an MX2008 DC Power Supply Module (-48 V) | 465
Removing an MX2008 DC Power Supply Module (-48 V) | 465
Installing an MX2008 DC Power Supply Module (-48 V) | 468
Replacing an MX2008 DC Power Distribution Module Cable (-48 V) | 470
Disconnecting an MX2008 DC Power Distribution Module Cable | 470
Connecting an MX2008 DC Power Distribution Module Cable (-48 V) | 471
Replacing an MX2000 DC Power Supply Module (240 V China) | 473
Removing an MX2000 Router DC Power Supply Module (240 V China) | 473
Installing an MX2000 Router DC Power Supply Module (240 V China) | 476
Replacing an MX2000 DC Power Distribution Module (240 V China) | 478
Removing an MX2000 Router DC Power Distribution Module (240 V China) | 478
Installing an MX2000 Router DC Power Distribution Module (240 V China) | 481
Connecting an MX2000 DC Router Power Distribution Module (240 V China) Cable | 483
Maintaining Cables That Connect to MX2008 MPCs or MICs | 485
Troubleshooting Hardware
5
Troubleshooting the MX2008 | 489
MX2008 Troubleshooting Resources | 489
Command-Line Interface | 489
Chassis and Interface Alarm Messages | 490
Alarm Relay Contacts | 490
Craft Interface LEDs | 490
Component LEDs | 491
Troubleshooting the MX2008 Cooling System | 492
Troubleshooting the MX2000 Router Power System | 495
Troubleshooting the MX2008 Host Subsystems | 510
Troubleshooting the MX2008 MICs | 511
Troubleshooting the MX2008 MPCs | 512
xiii

Contacting Customer Support and Returning the Chassis or Components
6
Contacting Customer Support and Returning the Chassis or Components | 516
Guidelines for Packing Hardware Components for Shipment | 516
Displaying MX2008 Router Components and Serial Numbers | 517
How to Return a Hardware Component to Juniper Networks, Inc. | 522
MX2008 Chassis Serial Number Label | 522
MX2008 Craft Interface Serial Number Label | 523
MX2008 SFB Serial Number Label | 524
MX2008 RCB Serial Number Label | 525
MX2008 Fan Tray Serial Number Label | 526
MX2008 MPC Serial Number Label | 527
MX2008 MIC Serial Number Label | 528
MX2008 Power Distribution Module Serial Number Label | 529
MX2008 Power Supply Module Serial Number Label | 531
Safety and Compliance Information
7
Definition of Safety Warning Levels | 536
General Safety Guidelines for Juniper Networks Devices | 539
General Safety Warnings for Juniper Networks Devices | 540
Qualified Personnel Warning | 541
Restricted-Access Area Warning | 542
Preventing Electrostatic Discharge Damage to an MX2008 Router | 544
Fire Safety Requirements for Juniper Networks Devices | 545
General Fire Safety Requirements | 546
Fire Suppression | 546
Fire Suppression Equipment | 546
Installation Safety Warnings for Juniper Networks Devices | 547
Intrabuilding Ports Warning | 547
Installation Instructions Warning | 548
Rack-Mounting Requirements and Warnings | 548
Ramp Warning | 553
xiv

General Laser Safety Guidelines for Juniper Networks Devices | 554
Laser Safety Warnings for Juniper Networks Devices | 555
Class 1 Laser Product Warning | 555
Class 1 LED Product Warning | 556
Laser Beam Warning | 557
Radiation from Open Port Apertures Warning | 558
Maintenance and Operational Safety Warnings for Juniper Networks Devices | 559
Battery Handling Warning | 560
Jewelry Removal Warning | 561
Lightning Activity Warning | 563
Operating Temperature Warning | 564
Product Disposal Warning | 566
In Case of an Electrical Accident | 567
General Electrical Safety Warnings for Juniper Networks Devices | 567
Grounded Equipment Warning | 568
Grounding Requirements and Warning | 568
Midplane Energy Hazard Warning | 569
Multiple Power Supplies Disconnection Warning | 570
Power Disconnection Warning | 571
General Electrical Safety Guidelines and Electrical Codes for Juniper Networks
Devices | 572
TN Power Warning for MX2008 Routers | 573
MX2000 Three-Phase AC Power Electrical Safety Guidelines | 573
MX2008 DC Power Electrical Safety Guidelines and Warnings | 575
MX2008 DC Power Electrical Safety Guidelines | 575
DC Power Electrical Safety Warnings for Juniper Networks Devices | 576
DC Power Copper Conductors Warning | 577
DC Power Disconnection Warning | 578
DC Power Wiring Terminations Warning | 581
xv

DC Power Electrical Safety Warnings for Juniper Networks Devices | 583
DC Power Copper Conductors Warning | 584
DC Power Disconnection Warning | 585
DC Power Wiring Terminations Warning | 588
Site Electrical Wiring Guidelines for MX Series Routers | 590
Distance Limitations for Signaling | 590
Radio Frequency Interference | 590
Electromagnetic Compatibility | 591
Agency Approvals and Compliance Statements for the MX2008 Router | 591
Agency Approvals for MX2008 Routers | 592
Compliance Statements for NEBS for the MX2008 Router | 593
Compliance Statements for EMC Requirements for the MX2008 Router | 594
Canada | 594
European Community | 594
Israel | 594
Japan | 595
United States | 595
Compliance Statements for Environmental Requirements | 595
xvi

About the Documentation
IN THIS SECTION
Documentation and Release Notes | xvii
Using the Examples in This Manual | xvii
Documentation Conventions | xix
Documentation Feedback | xxii
Requesting Technical Support | xxii
Use this guide to install hardware and perform initial software configuration, routine maintenance, and
troubleshooting for the MX2008 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.
xvii

If the example configuration contains the top level of the hierarchy (or multiple hierarchies), the example
isafull example. In this case, use the load merge command.
If the example configuration does not start at the top level of the hierarchy, the example is a snippet. In
this case, use the load merge relative command. These procedures are described in the following sections.
Merging a Full Example
To merge a full example, follow these steps:
1. From the HTML or PDF version of the manual, copy a configuration example into a text file, save the
file with a name, and copy the file to a directory on your routing platform.
For example, copy the following configuration to a file and name the file ex-script.conf. Copy the
ex-script.conf file to the /var/tmp directory on your routing platform.
system {
scripts {
commit {
file ex-script.xsl;
}
}
}
interfaces {
fxp0 {
disable;
unit 0 {
family inet {
address 10.0.0.1/24;
}
}
}
}
2. Merge the contents of the file into your routing platform configuration by issuing the load merge
configuration mode command:
[edit]
user@host# load merge /var/tmp/ex-script.conf
load complete
xviii

Merging a Snippet
To merge a snippet, follow these steps:
1. From the HTML or PDF version of the manual, copy a configuration snippet into a text file, save the
file with a name, and copy the file to a directory on your routing platform.
For example, copy the following snippet to a file and name the file ex-script-snippet.conf. Copy the
ex-script-snippet.conf file to the /var/tmp directory on your routing platform.
commit {
file ex-script-snippet.xsl; }
2. Move to the hierarchy level that is relevant for this snippet by issuing the following configuration mode
command:
[edit]
user@host# edit system scripts
[edit system scripts]
3. Merge the contents of the file into your routing platform configuration by issuing the load merge
relative configuration mode command:
[edit system scripts]
user@host# load merge relative /var/tmp/ex-script-snippet.conf
load complete
For more information about the load command, see CLI Explorer.
Documentation Conventions
Table 1 on page xx defines notice icons used in this guide.
xix

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 xx 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
xx