Juniper M120 Installation instructions

M120 Multiservice Edge Router Hardware Guide
Modified: 2018-07-08
Copyright © 2018, Juniper Networks, Inc.

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. and/or its affiliates in
the United States and other countries. All other trademarks may be 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.
M120 Multiservice Edge Router Hardware Guide
Copyright © 2018 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://www.juniper.net/support/eula/. By downloading, installing or using such software, you agree to the terms and conditions of that
EULA.
Copyright © 2018, Juniper Networks, Inc.ii

Table of Contents
AbouttheDocumentation............................................xxi
DocumentationandReleaseNotes.................................xxi
DocumentationConventions......................................xxi
Documentation Feedback .......................................xxiii
RequestingTechnicalSupport....................................xxiv
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
OpeningaCasewithJTAC....................................xxiv
Part 1 Overview
Chapter1 SystemOverview...................................................3
M120RouterDescription..............................................3
M120ComponentRedundancy.........................................4
Chapter2 M120RouterReleaseNotes..........................................5
Outstanding Issues with the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Errata with the M120 Router Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 3 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
M120RouterChassisDescription........................................7
M120MidplaneDescription............................................9
M120 Cable Management System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
M120CraftInterfaceDescription........................................11
CraftInterfaceFrontPanel.........................................11
M120 Alarm Relay Contacts on the Craft Interface . . . . . . . . . . . . . . . . . . . . . . 12
M120 External Clock Interface Ports on the Craft Interface . . . . . . . . . . . . . . . 12
M120 Routing Engine Interface Ports and Status Indicators . . . . . . . . . . . . . . 12
M120 Alarm LEDs and Alarm Cutoff/Lamp Test Button . . . . . . . . . . . . . . . . . . . . . 13
M120 Component LEDs on the Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Host Subsystem LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . 14
Ethernet Port LEDs on the Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
FEB LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FPC LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Supply LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . 15
External Clocking Inputs LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . 15
M120 External Clock Interface Ports on the Craft Interface . . . . . . . . . . . . . . . . . . 16
M120 Alarm Relay Contacts on the Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 4 Cooling System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . 19
M120CoolingSystemDescription......................................19
iiiCopyright © 2018, Juniper Networks, Inc.

Chapter 5 Host Subsystem Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . 21
M120HostSubsystemDescription......................................21
M120RoutingEngineDescription......................................22
RoutingEngineComponents......................................23
RoutingEngineBootSequence....................................24
M120RoutingEngineLEDs...........................................25
M120 RE-A-1800x2 Routing Engine Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
RoutingEngineComponents......................................25
RoutingEngineBootSequence....................................27
RE-A-1800RoutingEngineLEDs.......................................27
M120 Routing Engine Interface Ports and Status Indicators . . . . . . . . . . . . . . . . . 28
RoutingEngineSpecifications.........................................29
SupportedRoutingEnginesbyRouter...................................33
M7iRoutingEngines.............................................34
M10iRoutingEngines............................................34
M40eRoutingEngines...........................................34
M120RoutingEngines............................................35
M320RoutingEngines...........................................35
MX5, MX10, MX40, and MX80 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . 36
MX104RoutingEngines..........................................36
MX240RoutingEngines..........................................37
MX480RoutingEngines..........................................38
MX960RoutingEngines..........................................39
MX2008RoutingEngines.........................................39
MX2010RoutingEngines.........................................40
MX2020 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
MX10003RoutingEngines........................................41
PTX1000RoutingEngines.........................................41
PTX3000RoutingEngines........................................42
PTX5000RoutingEngines........................................42
PTX10008 and PTX10016 Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . 43
T320RoutingEngines............................................43
T640RoutingEngines...........................................44
T1600RoutingEngines..........................................45
T4000RoutingEngines..........................................45
TXMatrixRoutingEngines........................................46
TXMatrixPlusRoutingEngines....................................46
TX Matrix Plus (with 3D SIBs) Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . 47
M120ControlBoard(CB)Description...................................47
CBComponents................................................48
M120ControlBoard(CB)LEDs........................................48
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M120 Multiservice Edge Router Hardware Guide

Chapter 6 Line Card Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
M120 Flexible PIC Concentrators (FPCs) Description . . . . . . . . . . . . . . . . . . . . . . . 51
FPCComponents...............................................53
FPCTerminology................................................53
M120 Flexible PIC Concentrators (FPCs) LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
M120 Compact FPCs (CFPCs) Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
CFPCComponents..............................................56
M120FPCsandCFPCsSupported.....................................56
M120PICsDescription...............................................57
M120PICLEDs.....................................................58
M120PICsSupported...............................................58
M120End-of-LifePICsSupported......................................63
M120PIC/FPCCompatibility..........................................66
Chapter 7 Power System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 71
M120PowerSuppliesDescription......................................71
M120DCPowerSupplyDescription.....................................72
M120ACPowerSupplyDescription.....................................72
M120PowerSupplyLEDs.............................................73
Chapter 8 Switch Fabric Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 75
M120 Forwarding Engine Boards (FEBs) Description . . . . . . . . . . . . . . . . . . . . . . . 75
FEB Components ...............................................76
M120 Forwarding Engine Boards (FEBs) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Part 2 Site Planning, Preparation, and Specifications
Chapter9 PreparationOverview..............................................81
M120SitePreparationChecklist.......................................81
M120RouterPhysicalSpecifications....................................82
M120 Cabinet Size and Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 82
M120CabinetAirflowRequirements....................................83
M120RackMountingRequirements....................................83
M120 Clearance Requirements for Airflow and Hardware Maintenance . . . . . . . . 85
M120 Router Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
M120 Chassis Grounding Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
M120RouterPowerRequirements.....................................88
Chapter 10 AC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 93
M120 AC Power, Connection, and Power Cord Specifications . . . . . . . . . . . . . . . . 93
Electrical Specifications for the M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . 95
Chapter 11 DC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 97
M120 DC Power, Connection, and Cable Specifications . . . . . . . . . . . . . . . . . . . . . 97
Electrical Specifications for the M120 DC Power Supply . . . . . . . . . . . . . . . . . . . 100
vCopyright © 2018, Juniper Networks, Inc.
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Chapter 12 Network Cable and Transceiver Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion . . . . 101
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . . . . . . 101
Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 101
Calculating Power Budget and Power Margin for Fiber-Optic Cables . . . . . . . . . 102
Calculating Power Budget for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 102
Calculating Power Margin for Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . 103
Chapter 13 Management Cable and Transceiver Specifications and Pinouts . . . . . . . 105
Routing Engine Interface Cable and Wire Specifications for the M120 Router . . . 105
RJ-45 Connector Pinouts for the M120 Routing Engine ETHERNET Port . . . . . . . 106
RJ-45 Connector Pinouts for the Routing Engine AUX and CONSOLE Ports . . . . 106
RJ-45 Connector Pinouts for the External Clock Ports . . . . . . . . . . . . . . . . . . . . . 107
Part 3 Initial Installation and Configuration
Chapter14 InstallationOverview..............................................111
M120RouterInstallationSummary.....................................111
Chapter15 UnpackingtheM120...............................................113
Tools and Parts Required to Unpack the M120 Router . . . . . . . . . . . . . . . . . . . . . . 113
UnpackingtheM120Router..........................................113
VerifyingM120PartsReceived.........................................115
Chapter 16 Installing the Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or
Cabinet .......................................................119
Installing the Mounting Hardware for a Front-Mount Open-Frame Rack . . . . . . . 121
Installing the Mounting Hardware for a Center-Mount Open-Frame Rack . . . . . 123
Chapter 17 Installing the M120 With a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Tools Required to Install the M120 Router Using a Mechanical Lift . . . . . . . . . . . 125
Installing the M120 Router Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . 125
Chapter 18 Installing the M120 Without a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . 129
Tools and Parts Required to Install the M120 Router Without a Mechanical
Lift ..........................................................129
Removing Components from the Chassis Before Installing the M120 Router
WithoutaMechanicalLift........................................129
RemovingthePowerSupplies....................................130
RemovingFEBs.................................................131
RemovingCBs.................................................132
RemovingaFanTray............................................133
Removing the Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . . 135
RemovingFPCs................................................136
RemovingaCFPC...............................................137
Installing the M120 Router Without Using a Mechanical Lift . . . . . . . . . . . . . . . . 139
Reinstalling Components in the Chassis After Installing the M120 Router Without
aMechanicalLift...............................................142
ReinstallingCBs................................................142
ReinstallingtheFEBs............................................143
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M120 Multiservice Edge Router Hardware Guide

ReinstallingthePowerSupplies...................................144
ReinstallingFPCs...............................................145
ReinstallingaCFPC.............................................146
ReinstallingtheFanTrays........................................148
Reinstalling the Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . 149
Chapter 19 Connecting the M120 to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Connecting the Grounding Cable to the M120 Router . . . . . . . . . . . . . . . . . . . . . . 151
Chapter 20 Connecting the M120 to External Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Tools and Parts Required to Connect the M120 Router . . . . . . . . . . . . . . . . . . . . . 153
Connecting the M120 Router to Management and Alarm Devices . . . . . . . . . . . . 153
Connecting the M120 Router to a Management Console or Auxiliary
Device ....................................................155
Connecting the M120 Router to a Network for Out-of-Band
Management ..............................................156
Connecting the M120 Router to an External Alarm-Reporting Device . . . . . 158
Connecting the M120 Router to a Network for Out-of-Band Management . . . . . 160
Connecting the M120 Router to an External Alarm-Reporting Device . . . . . . . . . . 161
Connecting the M120 Router to an External Clocking Device . . . . . . . . . . . . . . . . 163
Connecting PIC Cables to the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Chapter21 ProvidingPowertotheM120.......................................167
Connecting Power to an AC-Powered M120 Router . . . . . . . . . . . . . . . . . . . . . . . 167
Connecting Power to a DC-Powered M120 Router . . . . . . . . . . . . . . . . . . . . . . . . 169
PoweringOntheM120Router........................................170
PoweringOfftheM120Router.........................................171
Chapter 22 Configuring the Junos Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Initially Configuring Junos OS on the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . 173
Part 4 Installing and Replacing Components
Chapter 23 Overview of Installing and Replacing Components . . . . . . . . . . . . . . . . . . . 179
M120 Field-Replaceable Units (FRUs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Tools and Parts Required to Replace M120 Components . . . . . . . . . . . . . . . . . . . 180
Chapter 24 Replacing Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Replacing Alarm Relay Wires on the M120 Craft Interface . . . . . . . . . . . . . . . . . . 183
ReplacingtheM120CraftInterface....................................184
Removing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Installing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Chapter 25 Replacing Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
ReplacinganM120AirFilter..........................................187
RemovingtheM120AirFilter......................................187
InstallingtheM120AirFilter......................................188
ReplacinganM120FanTray..........................................190
RemovinganM120FanTray......................................190
InstallinganM120FanTray.......................................192
viiCopyright © 2018, Juniper Networks, Inc.
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Chapter 26 Replacing Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
ReplacinganM120RoutingEngine....................................195
RemovinganM120RoutingEngine.................................195
InstallinganM120RoutingEngine.................................197
Replacing an SSD Drive on an RE-A-1800 or RE-S-1800 . . . . . . . . . . . . . . . . . . . 198
Replacing a DIMM Module in M120 Routing Engines . . . . . . . . . . . . . . . . . . . . . . 200
RemovingaM120DIMMModule..................................200
InstallingaM120DIMMModule...................................201
ReplacinganM120CB..............................................202
RemovinganM120CB..........................................202
InstallinganM120CB...........................................204
Replacing Connections to M120 Routing Engine Interface Ports . . . . . . . . . . . . . 206
Replacing the Management Ethernet Cable on the M120 Routing Engine . . 206
Replacing the Console or Auxiliary Cable on the M120 Routing Engine . . . . 207
Replacing Alarm Relay Wires on the M120 Craft Interface . . . . . . . . . . . . . . 208
Replacing the Console or Auxiliary Cable on the M120 Routing Engine . . . . . . . 209
Replacing the Management Ethernet Cable on the M120 Routing Engine . . . . . . 210
Chapter 27 Replacing Line Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
ReplacinganM120FPC.............................................213
RemovinganM120FPC..........................................213
InstallinganM120FPC..........................................216
ReplacinganM120CFPC............................................219
RemovinganM120CFPC........................................219
InstallinganM120CFPC.........................................221
ReplacinganM120PIC..............................................223
RemovinganM120PIC..........................................223
InstallinganM120PIC...........................................225
ReplacinganM120PICCable........................................228
RemovinganM120PICCable.....................................228
InstallinganM120PICCable.....................................229
ReplacinganM120XENPAKModule...................................231
RemovinganM120XENPAKModule...............................231
InstallinganM120XENPAKModule................................232
ReplacinganSFPorXFPTransceiver..................................234
Removing an SFP or XFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Installing an SFP or XFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Chapter 28 Replacing Power System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
ReplacinganM120ACPowerSupply..................................239
Removing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Installing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Replacing an M120 AC Power Supply Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
ReplacinganM120DCPowerSupply..................................245
Removing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Installing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Replacing an M120 DC Power Supply Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
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M120 Multiservice Edge Router Hardware Guide

Chapter 29 Replacing Switch Fabric Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
ReplacinganM120FEB.............................................255
RemovinganM120FEB.........................................255
InstallinganM120FEB..........................................256
Part 5 Maintaining the Chassis and Components
Chapter 30 Routine Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Routine Maintenance Procedures on the M120 Router . . . . . . . . . . . . . . . . . . . . . 261
Chapter 31 Maintaining Components and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Tools and Parts Required to Maintain M120 Hardware Components . . . . . . . . . 263
MaintainingtheM120AirFilter.......................................263
MaintainingtheM120FanTrays......................................264
Maintaining the M120 Host Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Taking the M120 Host Subsystem Offline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
MaintainingM120FPCsandCFPCs....................................270
StoringanM120FPC................................................271
HoldinganM120FPC...............................................271
Maintaining M120 PICs and PIC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Maintaining the M120 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
MaintainingtheM120FEBs..........................................278
Part 6 Troubleshooting Hardware
Chapter 32 Troubleshooting Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Overview of Troubleshooting Resources for the M120 Router . . . . . . . . . . . . . . . 283
Troubleshooting Using the Command-Line Interface . . . . . . . . . . . . . . . . . . 283
Troubleshooting Using the Chassis and Interface Alarm Messages . . . . . . . 284
Troubleshooting Using the Juniper Networks Technical Assistance
Center ...................................................284
M120LEDOverview................................................284
CraftInterfaceLEDs............................................284
ComponentLEDs..............................................285
Troubleshooting the M120 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Troubleshooting M120 FPCs and CFPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
TroubleshootingM120PICs..........................................288
Troubleshooting the M120 Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
TroubleshootingM120FEBs.........................................289
Troubleshooting an M120 FEB When a Chassis Alarm Is Lit Upon Initial Startup
orRemoval....................................................291
Part 7 Contacting Customer Support and Returning the Chassis or
Components
Chapter 33 Contacting Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
ContactingCustomerSupport.......................................295
ixCopyright © 2018, Juniper Networks, Inc.
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Chapter 34 Locating Component Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Displaying M120 Router Components and Serial Numbers . . . . . . . . . . . . . . . . . 297
M120ChassisSerialNumberLabel....................................298
M120 Craft Interface Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
M120 Routing Engine Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
M120CBSerialNumberLabel.......................................300
M120FPCSerialNumberLabel.......................................301
M120CFPCSerialNumberLabel......................................301
M120PICSerialNumberLabel.......................................302
M120 Power Supply Serial Number Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
M120FEBSerialNumberLabel.......................................303
Chapter 35 Packing and Returning Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Returning a Hardware Component to Juniper Networks, Inc. . . . . . . . . . . . . . . . 305
Tools and Parts Required to Remove Components from an M120 Router . . . . . 306
Packing the M120 Router for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Guidelines for Packing M120 Components for Shipment . . . . . . . . . . . . . . . . . . 308
Part 8 Safety and Compliance Information
Chapter 36 General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
DefinitionofSafetyWarningLevels....................................311
General Safety Guidelines for Juniper Networks Devices . . . . . . . . . . . . . . . . . . . 313
General Safety Warnings for Juniper Networks Devices . . . . . . . . . . . . . . . . . . . . 314
QualifiedPersonnelWarning......................................314
Restricted-AccessAreaWarning...................................314
Preventing Electrostatic Discharge Damage to an M120 Router . . . . . . . . . . . . . . 316
Chapter37 FireSafetyRequirements..........................................319
Fire Safety Requirements for Juniper Networks Devices . . . . . . . . . . . . . . . . . . . . 319
GeneralFireSafetyRequirements.................................319
Fire Suppression ...............................................319
FireSuppressionEquipment......................................319
Chapter 38 Installation Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 321
M120ChassisLiftingGuidelines.......................................321
Installation Safety Warnings for Juniper Networks Devices . . . . . . . . . . . . . . . . . 322
IntrabuildingPortsWarning......................................322
Installation Instructions Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Rack-Mounting Requirements and Warnings . . . . . . . . . . . . . . . . . . . . . . . . 323
Ramp Warning ................................................326
Chapter 39 Laser and LED Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . 329
General Laser Safety Guidelines for the M120 Router . . . . . . . . . . . . . . . . . . . . . 329
M120LaserandLEDSafetyWarnings..................................329
Class1LaserProductWarning....................................330
Class1LEDProductWarning.....................................330
LaserBeamWarning...........................................330
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . . . . . 331
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M120 Multiservice Edge Router Hardware Guide