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

Chapter 40 Maintenance and Operational Safety Guidelines and Warnings . . . . . . . . 333
Maintenance and Operational Safety Warnings for Juniper Networks Devices . . 333
BatteryHandlingWarning........................................333
JewelryRemovalWarning.......................................334
LightningActivityWarning.......................................335
OperatingTemperatureWarning..................................336
ProductDisposalWarning.......................................337
Chapter 41 Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . 339
InCaseofanElectricalAccident......................................339
General Electrical Safety Warnings for Juniper Networks Devices . . . . . . . . . . . . 339
GroundedEquipmentWarning...................................340
Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
MidplaneEnergyHazardWarning..................................341
Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . 341
PowerDisconnectionWarning....................................342
AC Power Electrical Safety Guidelines for the M120 Router . . . . . . . . . . . . . . . . . 343
Japanese AC Power Cord Warning for M Series and MX Series Routers . . . . . . . 344
DC Power Electrical Safety Warnings for Juniper Networks Devices . . . . . . . . . . 344
DC Power Copper Conductors Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
DCPowerDisconnectionWarning.................................345
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
DC Power Electrical Safety Guidelines for the M120 Router . . . . . . . . . . . . . . . . . 347
Site Electrical Wiring Guidelines for Juniper Networks Devices . . . . . . . . . . . . . . 349
Distance Limitations for Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
RadioFrequencyInterference....................................349
Electromagnetic Compatibility ...................................349
Chapter 42 Agency Approvals and Compliance Statements . . . . . . . . . . . . . . . . . . . . . . 351
AgencyApprovalsforM120Routers....................................351
Compliance Statements for EMC Requirements for the M120 Router (European
Community) ..................................................353
Compliance Statements for EMC Requirements for Juniper Networks Devices
(Canada).....................................................353
Compliance Statements for EMC Requirements for Juniper Networks Devices
(Israel).......................................................353
Compliance Statements for EMC Requirements for Juniper Networks Devices
(Japan) ......................................................354
Compliance Statements for EMC Requirements for Juniper Networks Devices
(UnitedStates)................................................354
Compliance Statements for Environmental Requirements . . . . . . . . . . . . . . . . . 354
Compliance Statements for NEBS for the M120 Router . . . . . . . . . . . . . . . . . . . . 354
Compliance Statements for Acoustic Noise for the M120 Router . . . . . . . . . . . . 355
xiCopyright © 2018, Juniper Networks, Inc.
Table of Contents

Copyright © 2018, Juniper Networks, Inc.xii
M120 Multiservice Edge Router Hardware Guide

List of Figures
Part 1 Overview
Chapter 3 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 1: Front View of a Fully Configured M120 Router Chassis . . . . . . . . . . . . . . . . 8
Figure 2: Rear View of a Fully Configured AC-Powered M120 Router Chassis . . . . . 8
Figure 3: Rear View of a Fully Configured DC-Powered M120 Router Chassis . . . . . 9
Figure4:M120Midplane..............................................10
Figure 5: M120 Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6: Front Panel of the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 4 Cooling System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 7: Airflow Through the M120 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure8:M120FrontFanTray.........................................20
Figure9:M120RearFanTray..........................................20
Chapter 5 Host Subsystem Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . 21
Figure10:M120RoutingEngine........................................22
Figure 11: RE-A-1800x2 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 12: USB Memory Device in an M120 Routing Engine . . . . . . . . . . . . . . . . . . . 24
Figure 13: RE-A-1800x2 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 14: USB Memory Device in an Routing Engine . . . . . . . . . . . . . . . . . . . . . . . 27
Figure15:M120CB..................................................48
Chapter 6 Line Card Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 16: FPC and CFPCs Installed in an M120 Router Chassis . . . . . . . . . . . . . . . 52
Figure 17: FPC1, FPC2, and FPC3 for the M120 Router . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 18: FPC and CFPCs Installed in an M120 Router Chassis . . . . . . . . . . . . . . . 55
Figure 19: Ethernet 10GBASE XFP CFPC for the M120 Router . . . . . . . . . . . . . . . . 55
Chapter 7 Power System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure20:M120DCPowerSupply......................................72
Figure21:M120ACPowerSupply.......................................73
Chapter 8 Switch Fabric Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure22:M120FEB.................................................76
Part 2 Site Planning, Preparation, and Specifications
Chapter9 PreparationOverview..............................................81
Figure23:TypicalOpen-FrameRack...................................85
Figure 24: M120 Chassis Dimensions and Clearance Requirements . . . . . . . . . . . 86
Figure 25: M120 DC Power and Grounding Cable Lug . . . . . . . . . . . . . . . . . . . . . . 88
Chapter 10 AC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 93
xiiiCopyright © 2018, Juniper Networks, Inc.

Figure26:M120ACPlugTypes........................................95
Chapter 11 DC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Figure 27: Typical DC Source Cabling to the M120 Router . . . . . . . . . . . . . . . . . . . 98
Part 3 Initial Installation and Configuration
Chapter15 UnpackingtheM120...............................................113
Figure 28: Contents of the M120 Shipping Container . . . . . . . . . . . . . . . . . . . . . . . 115
Chapter 16 Installing the Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Figure 29: Installing the M120 Mounting Hardware for a Four-Post Rack or
Cabinet .......................................................121
Figure 30: Installing the M120 Mounting Hardware for an Open-Frame Rack . . . 123
Chapter 17 Installing the M120 With a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Figure 31: Installing the M120 Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Chapter 18 Installing the M120 Without a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . 129
Figure 32: Removing a Power Supply Before Installing the M120 Router . . . . . . . . 131
Figure 33: Removing a FEB Before Installing the M120 Router . . . . . . . . . . . . . . . 132
Figure 34: Removing a CB Before Installing the M120 Router . . . . . . . . . . . . . . . . 133
Figure 35: Removing an Upper Front Fan Tray Before Installing the M120
Router........................................................134
Figure 36: Removing a Lower Rear Fan Tray Before Installing the M120
Router........................................................135
Figure 37: Removing the Cable Management System Before Installing the M120
Router........................................................136
Figure 38: Removing an FPC Before Installing the M120 Router . . . . . . . . . . . . . . 137
Figure 39: Removing a CFPC Before Installing the M120 Router . . . . . . . . . . . . . . 138
Figure 40: Installing the M120 Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . 141
Figure 41: Reinstalling a CB After Installing the M120 Router . . . . . . . . . . . . . . . . 143
Figure 42: Reinstalling a FEB After Installing the M120 Router . . . . . . . . . . . . . . . 144
Figure 43: Reinstalling a Power Supply After Installing the M120 Router . . . . . . . 145
Figure 44: Reinstalling an FPC After Installing the M120 Router . . . . . . . . . . . . . . 146
Figure 45: Reinstalling a CFPC After Installing the M120 Router . . . . . . . . . . . . . 148
Figure 46: Reinstalling a Front Fan Tray After Installing the M120 Router . . . . . . 149
Chapter 19 Connecting the M120 to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Figure 47: Connecting the Grounding Cable to the M120 Router . . . . . . . . . . . . . . 152
Chapter 20 Connecting the M120 to External Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Figure 48: M120 Routing Engine Management Ports and Alarm Relay
Contacts......................................................154
Figure 49: M120 Console and Auxiliary Serial Port Connector . . . . . . . . . . . . . . . 155
Figure 50: M120 Routing Engine Management Ports and Alarm Relay
Contacts .....................................................156
Figure 51: M120 Routing Engine Ethernet Cable Connector . . . . . . . . . . . . . . . . . . 157
Figure 52: M120 Routing Engine External Device Ports . . . . . . . . . . . . . . . . . . . . . 157
Figure 53: M120 Routing Engine Alarm Relay Contacts . . . . . . . . . . . . . . . . . . . . . 159
Figure 54: M120 Routing Engine Ethernet Cable Connector . . . . . . . . . . . . . . . . . 160
Figure 55: M120 Routing Engine External Device Ports . . . . . . . . . . . . . . . . . . . . . 161
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M120 Multiservice Edge Router Hardware Guide

Figure 56: M120 Routing Engine Alarm Relay Contacts . . . . . . . . . . . . . . . . . . . . . 163
Figure 57: Attaching a Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Chapter21 ProvidingPowertotheM120.......................................167
Figure 58: Connecting AC Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . 168
Figure 59: Connecting DC Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . 170
Part 4 Installing and Replacing Components
Chapter 24 Replacing Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Figure 60: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 184
Figure 61: Removing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Figure 62: Installing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Chapter 25 Replacing Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Figure 63: Removing the M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Figure 64: Installing the M120 Front Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Figure 65: Removing an M120 Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . 191
Figure 66: Removing an M120 Lower Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 191
Figure 67: Installing an M120 Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 192
Figure 68: Installing an M120 Lower Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 193
Chapter 26 Replacing Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Figure 69: Removing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Figure 70: Installing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Figure 71: RE-A-1800 Storage Drive Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Figure 72: RE-S-1800 Storage Drive Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Figure 73: Installing the DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Figure74:RemovinganM120CB.....................................204
Figure75:InstallinganM120CB......................................205
Figure 76: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 206
Figure 77: M120 Ethernet Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Figure 78: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 207
Figure 79: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 208
Figure 80: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 209
Figure 81: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . . 210
Figure 82: M120 Ethernet Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Figure 83: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . . 211
Chapter 27 Replacing Line Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Figure84:RemovinganM120FPC.....................................215
Figure85:InstallinganM120FPC.....................................218
Figure 86: Connecting Fiber-Optic Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . 218
Figure87:RemovinganM120CFPC...................................220
Figure88:InstallinganM120CFPC....................................222
Figure89:RemovinganM120PIC.....................................225
Figure90:InstallinganM120PIC......................................227
Figure 91: Connecting Fiber-Optic Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . 230
Figure 92: Removing a M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Figure 93: Installing a M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Figure 94: Removing M120 SFPs or XFPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
xvCopyright © 2018, Juniper Networks, Inc.
List of Figures

Chapter 28 Replacing Power System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Figure 95: Removing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Figure 96: Rear of the M120 Power Supply Showing Midplane Connector . . . . . . 241
Figure 97: Installing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Figure 98: Disconnecting Power Cables from the M120 DC Power Supply . . . . . 246
Figure 99: Removing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 248
Figure 100: Installing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 250
Figure 101: Connecting Power Cables to the M120 DC Power Supply . . . . . . . . . . 251
Chapter 29 Replacing Switch Fabric Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Figure102:RemovinganM120FEB....................................256
Figure103:InstallinganM120FEB.....................................257
Part 5 Maintaining the Chassis and Components
Chapter 31 Maintaining Components and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Figure 104: Holding an M120 FPC Vertically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Figure 105: Holding an M120 FPC Horizontally . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Figure 106: Do Not Grasp the Connector Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Figure 107: Do Not Carry an FPC with Only One Hand . . . . . . . . . . . . . . . . . . . . . 274
Figure 108: Do Not Rest the FPC on an Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Part 7 Contacting Customer Support and Returning the Chassis or
Components
Chapter 34 Locating Component Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Figure109:SerialNumberIDLabel....................................298
Figure 110: M120 Chassis Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
Figure 111: M120 Craft Interface Serial Number Label . . . . . . . . . . . . . . . . . . . . . . 299
Figure 112: M120 Routing Engine Serial Number Label . . . . . . . . . . . . . . . . . . . . . 300
Figure 113: M120 CB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Figure 114: M120 FPC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Figure 115: M120 Routing Engine Serial Number Label . . . . . . . . . . . . . . . . . . . . . 301
Figure 116: M120 PIC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Figure 117: M120 AC Power Supply Serial Number Label . . . . . . . . . . . . . . . . . . . 303
Figure 118: M120 DC Power Supply Serial Number Label . . . . . . . . . . . . . . . . . . . 303
Figure 119: M120 FEB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Part 8 Safety and Compliance Information
Chapter 36 General Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Figure 120: Placing a Component into an Electrostatic Bag . . . . . . . . . . . . . . . . . 316
Copyright © 2018, Juniper Networks, Inc.xvi
M120 Multiservice Edge Router Hardware Guide

List of Tables
AbouttheDocumentation.........................................xxi
Table1:NoticeIcons................................................xxii
Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
Part 1 Overview
Chapter 3 Chassis Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3: M120 Alarm LEDs and Alarm Cutoff/Lamp Test Button . . . . . . . . . . . . . . 13
Table4:M120HostSubsystemLEDs....................................14
Table 5: FEB LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table6:M120FPCLEDs..............................................15
Table 7: Power Supply LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . 15
Table 8: External Clock LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . 16
Chapter 5 Host Subsystem Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . 21
Table9:M120RoutingEngineLED.....................................25
Table10:RoutingEngineLEDs.........................................28
Table 11: Routing Engine Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 12: End-of-Life Routing Engine Specifications . . . . . . . . . . . . . . . . . . . . . . . 32
Table13:M7iRoutingEngines.........................................34
Table14:M10iRoutingEngines........................................34
Table15:M40eRoutingEngines.......................................35
Table16:M120RoutingEngines........................................35
Table17:M320RoutingEngines.......................................36
Table 18: MX5, MX10, MX40, and MX80 Routing Engine . . . . . . . . . . . . . . . . . . . . 36
Table19:MX104RoutingEngines......................................37
Table 20: MX240 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 21: MX480 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 22: MX960 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 23: MX2008 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 24: MX2010 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 25: MX2020 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 26: MX10003 Supported Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table27:PTX1000RoutingEngines....................................41
Table28:PTX3000RoutingEngines...................................42
Table29:PTX5000RoutingEngines...................................43
Table 30: PTX10008 and PTX10016 Routing Engines . . . . . . . . . . . . . . . . . . . . . . 43
Table31:T320RoutingEngines........................................43
Table32:T640RoutingEngines.......................................44
Table33:T1600RoutingEngines......................................45
Table34:T4000RoutingEngines.....................................46
xviiCopyright © 2018, Juniper Networks, Inc.

Table35:TXMatrixRoutingEngines....................................46
Table 36: TX Matrix Plus Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 37: Routing Engines on TX Matrix Plus with 3D SIBs . . . . . . . . . . . . . . . . . . . 47
Table38:M120ControlBoardLEDs....................................49
Chapter 6 Line Card Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 39: FPCs Supported by the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 40: CFPCs Supported by the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Table 41: PICs Supported in the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Table 42: End-of-Life PICs Supported in the M120 Router . . . . . . . . . . . . . . . . . . . 63
Table 43: M120 PIC/FPC Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Chapter 7 Power System Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 71
Table44:M120PowerSupplyLED.....................................74
Chapter 8 Switch Fabric Components and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 75
Table45:M120FEBLEDs.............................................77
Part 2 Site Planning, Preparation, and Specifications
Chapter9 PreparationOverview..............................................81
Table 46: M120 Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Table 47: M120 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Table 48: M120 Rack Requirements and Specifications . . . . . . . . . . . . . . . . . . . . 84
Table 49: M120 Router Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . 86
Table 50: Power System Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 88
Table 51: AC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . 89
Table 52: DC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . 89
Table 53: Component Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Chapter 10 AC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Table 54: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Table 55: AC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . 96
Chapter 11 DC Power Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Table 56: M120 DC Power and Grounding Cable Specifications . . . . . . . . . . . . . . 99
Table 57: DC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . 100
Chapter 12 Network Cable and Transceiver Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Table 58: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . 103
Chapter 13 Management Cable and Transceiver Specifications and Pinouts . . . . . . . 105
Table 59: Routing Engine Interface Cable and Wire Specifications . . . . . . . . . . . 105
Table 60: RJ-45 Connector Pinout for the Routing Engine ETHERNET Port . . . . 106
Table 61: RJ-45 Connector Pinout for the Routing Engine AUX and CONSOLE
Ports ........................................................106
Table 62: RJ-45 Connector Pinout for the External Interface Ports . . . . . . . . . . . 107
Part 3 Initial Installation and Configuration
Chapter15 UnpackingtheM120...............................................113
Table 63: Parts List for a Fully Configured M120 Router . . . . . . . . . . . . . . . . . . . . . 115
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Table64:AccessoryBoxPartsList.....................................116
Chapter 16 Installing the Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Table 65: Four-Post Rack or Cabinet Mounting Hole Locations for the M120
Router ........................................................119
Table 66: Open-Frame Rack Mounting Hole Locations for the M120 Router . . . . 121
Part 4 Installing and Replacing Components
Chapter 23 Overview of Installing and Replacing Components . . . . . . . . . . . . . . . . . . . 179
Table 67: M120 Field-Replaceable Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Table68:ToolsandPartsRequired....................................180
Part 5 Maintaining the Chassis and Components
Chapter 31 Maintaining Components and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Table 69: Effect of Taking the M120 Host Subsystem Offline . . . . . . . . . . . . . . . 268
xixCopyright © 2018, Juniper Networks, Inc.
List of Tables

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M120 Multiservice Edge Router Hardware Guide