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Juniper Networks
MX240
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Hardware Guide, North Mathilda Avenue Sunnyvale, California
Models:
MX240
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Troubleshooting
Specs
Install
Parts list
Alarm Relay Contacts
Symbols
Connecting the Router
Maintenance
Configuring Junos Software
Restricted Access Area Warning
Page 1
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MX240™ Ethernet Services Router
Hardware Guide
Juniper Networks, Inc.
1194 North Mathilda Avenue
Sunnyvale, California 94089
USA
408-745-2000
www.juniper.net
Part Number:
530-022140-01,
Revision 2
Page 2
Page 1
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Contents
North Mathilda Avenue Sunnyvale, California
Hardware Guide
MX240 Ethernet Services Router Hardware Guide
End User License Agreement
Iii
Page
Table of Contents
AC Power Supply LEDs
Part Setting Up the Router
Installing the Router Using a Lift
Moving the Mounting Brackets for Center-Mounting the Router
Maintaining DPCs
Maintaining the Air Filter Maintaining the Fan Tray
Handling and Storing DPCs Holding a DPC Storing a DPC
100
Connecting the Cable to a Management Console or Auxiliary
102
103
121
Part Appendixes
125
126
161
155
163
165
176
Removing the Power Supplies 188 Removing the Fan Tray 189
179
183
203
Part Index
204
205
List of Figures
Rear View of a Fully Configured AC-Powered Router Chassis
175
111
191
List of Tables
186
Objectives
About This Guide
Audience
On page xviii defines the notice icons used in this guide
Documentation Conventions
Text and Syntax Conventions
Convention Description Plain text like this
List of Technical Publications
Junos Software for Supported Routing Platforms
Technical Documentation for Supported Routing Platforms
Junos References
Web User Guide
Xxiii
Junos Software Network Operations Guides
Junos Software with Enhanced Services Documentation
Traffic classification
Documentation Feedback
Obtaining Documentation
Self-Help Online Tools and Resources
Requesting Technical Support
Page
Router Overview on Hardware Components on
MX240 Router Overview
Page
Router Description
Router Overview
Component Redundancy
Router Chassis
Hardware Components
Front View of a Fully Configured Router Chassis
Rear View of a Fully Configured AC-Powered Router Chassis
Dense Port Concentrators DPCs
Midplane
Typical DPCs Supported on the MX240 Router
Four-Port 10-Gigabit Ethernet DPC LEDs
DPC Components
40-Port Gigabit Ethernet DPC LEDs
Host Subsystem
Switch Control Board SCB
SCB Redundancy
SCB Slots
SCB Components
Switch Control Board LEDs
SCB LEDs
Routing Engine Components
Routing Engine
Ethernet
Routing Engine Interface Ports
Routing Engine Boot Sequence
Routing Engine LEDs
Craft Interface
Cable Management System
SCB LEDs on Fan LEDs on Alarm Relay Contacts on
Alarm LEDs and Alarm Cutoff/Lamp Test Button
Alarm LEDs and Alarm Cutoff/Lamp Test Button
Power Supply LEDs
Power Supply LEDs on the Craft Interface
Host Subsystem LEDs
SCB LEDs
DPC LEDs
Fan LEDs
Power Supplies
Alarm Relay Contacts
AC Power Supply
AC Power Supply
AC Power Supply LEDs
DC Power Supply Configurations for the MX240 Router
DC Power Supply
AC Power Supply LEDs
DC Power Supply LEDs
DC Power Supply LEDs
Cooling System
Airflow Through Chassis
Air Filter
Setting Up the Router
Page
Site Preparation Checklist
Preparing the Site for Router Installation
Site Preparation Checklist
Cabinet Size and Clearance Requirements
Cabinet Requirements
Cabinet Airflow Requirements
Rack Size and Strength
Rack Requirements
Spacing of Mounting Bracket Holes
Clearance Requirements for Airflow and Hardware Maintenance
Connection to Building Structure
Chassis Dimensions and Clearance Requirements
Page
Installation Overview
MX240 Ethernet Services Router Hardware Guide
Tools and Parts Required
Unpacking the Router
Unpacking the Router
Verifying Parts Received
Contents of the Shipping Crate
Accessory Box Parts List
Parts List for a Fully Configured Router
Accessory Box Parts List
Installing the Mounting Hardware for a Rack or Cabinet
Installing the Mounting Hardware
Four-Post Rack or Cabinet Mounting Hole Locations
MX240 Ethernet Services Router Hardware Guide
Moving the Mounting Brackets for Center-Mounting the Router
Installing the Mounting Hardware for an Open-Frame Rack
MX240 Ethernet Services Router Hardware Guide
Safety Requirements, Warnings, and Guidelines
Installing the Router
Installing the Router Using a Mechanical Lift
Tools Required
Installing the Router Using a Lift
Installing the Router in the Rack
Page
Connecting the Router to Management and Alarm Devices
Connecting the Router
Connecting to a Management Console or Auxiliary Device
Connecting to a Network for Out-of-Band Management
Connecting to an External Alarm-Reporting Device
Connecting DPC Cables
Attaching a Cable to a DPC
Grounding and Providing Power to the Router
Grounding the Router
Connecting Power to an AC-Powered Router
To power on an AC-powered router
Powering On an AC-Powered Router
Connecting Power to a DC-Powered Router
Grounding and Providing Power to the Router
Connecting DC Power to the Router
Powering On a DC-Powered Router
Powering Off the Router
MX240 Ethernet Services Router Hardware Guide
Configuring the Junos Software
Configuring Junos Software
Configuring the Junos Software on
Log in as the root user. There is no password
Configure the router’s domain name
Enter configuration mode
Configure the IP address of a DNS server
Start the CLI
Edit Root@# commit
Commit the configuration to activate it on the router
Page
Part
Page
Maintaining Hardware Components
Routine Maintenance Procedures
Maintaining the Air Filter
Maintaining Cooling System Components
Maintaining the Fan Tray
Maintaining Hardware Components
User@host show chassis routing-engine
Maintaining the Host Subsystem
User@host show chassis environment cb
Maintaining DPCs
Maintaining Packet Forwarding Engine Components
User@host show chassis fpc detail
Handling and Storing DPCs
Maintaining DPC Cables
DPC Edges
Holding a DPC
Do Not Grasp the Connector Edge
Do Not Rest the DPC on an Edge
Storing a DPC
Maintaining the Power Supplies
Overview of Troubleshooting Resources
Troubleshooting Hardware Components
Command-Line Interface
Juniper Networks Technical Assistance Center
LEDs
Chassis and Interface Alarm Messages
Craft Interface LEDs
Component LEDs
Airflow Through the Chassis
Troubleshooting the Cooling System
Troubleshooting DPCs
Basics and Services Command Reference
Troubleshooting the Power System
Temperature DC output
Page
Field-Replaceable Units FRUs
Replacing Hardware Components
Tools and Parts Required
Field-Replaceable Units
Removing the Craft Interface
Replacing the Craft Interface
To remove the craft interface see on
To install the craft interface see on
Installing the Craft Interface
Disconnecting the Alarm Relay Wires
Replacing Alarm Relay Wires
Replacing Cooling System Components
Connecting the Alarm Relay Wires
Replacing the Fan Tray
Removing the Fan Tray
To install the fan tray see on
Installing the Fan Tray
Removing an Air Filter
Replacing the Air Filter
To install the air filter see on
Installing the Air Filter
To remove the air filter see on
Taking the Host Subsystem Offline
Replacing Host Subsystem Components
Master in the Current state field
Replacing an SCB
Operating and Positioning the SCB Ejectors
Removing an SCB
Removing an SCB
To install an SCB see on
Installing an SCB
To check the status of the SCB, use the CLI command
Removing a Routing Engine
Replacing a Routing Engine
Removing a Routing Engine
Installing a Routing Engine
Replacing Connections to Routing Engine Interface Ports
Installing a Routing Engine
Replacing the Management Ethernet Cable
Installing the Management Ethernet Cable
Replacing the Console or Auxiliary Cable
Removing the Management Ethernet Cable
Replacing a DPC
Replacing DPCs and Transceivers
Removing a DPC
User@hostrequest chassis fpc slot slot-numberoffline
To install a DPC see on
Installing a DPC
User@hostrequest chassis fpc slot slot-numberonline
Removing an SFP or XFP Transceiver
Installing a DPC
Removing SFPs or XFPs
Replacing Power System Components
Installing an SFP or XFP Transceiver
Removing an AC Power Supply
Removing an AC Power Supply
Removing a DC Power Supply
Installing an AC Power Supply
To install an AC power supply see on
Replacing Hardware Components
Removing a DC Power Supply from an MX240 Router
Installing a DC Power Supply
Replacing Hardware Components
Installing a DC Power Supply in an MX240 Router
Replacing an AC Power Cord
Disconnecting an AC Power Cord
Replacing a DC Power Supply Cable
Connecting an AC Power Supply Cord
Connecting a DC Power Supply Cable
Disconnecting a DC Power Supply Cable
Removing the Cable Management System
Replacing the Cable Management System
Removing or Installing the Cable Management System
Installing the Cable Management System
Appendixes
MX240 Ethernet Services Router Hardware Guide Appendixes
Definition of Safety Warning Levels
Safety and Regulatory Compliance Information
Safety Guidelines and Warnings
Qualified Personnel Warning
General Safety Guidelines and Warnings
Restricted Access Area Warning
Appendix a Safety and Regulatory Compliance Information
Preventing Electrostatic Discharge Damage
Fire Safety Requirements
Fire Suppression
Installation Safety Guidelines and Warnings
Fire Suppression Equipment
Chassis-Lifting Guidelines
Installation Instructions Warning
Rack-Mounting Requirements and Warnings
MX240 Ethernet Services Router Hardware Guide
Appendix a Safety and Regulatory Compliance Information
Ramp Warning
Laser and LED Safety Guidelines and Warnings
Class 1 Laser Product Warning Class 1 LED Product Warning
General Laser Safety Guidelines
Waarschuwing Klasse 1 LED-product
Laser Beam Warning
Radiation from Open Port Apertures Warning
Maintenance and Operational Safety Guidelines and Warnings
Operating Temperature Warning on Product Disposal Warning on
Battery Handling Warning
Jewelry Removal Warning
Lightning Activity Warning
Operating Temperature Warning
Product Disposal Warning
Case of Electrical Accident
Electrical Safety Guidelines and Warnings
Grounded Equipment Warning
General Electrical Safety Guidelines and Warnings
MX240 Ethernet Services Router Hardware Guide
Power Disconnection Warning
TN Power Warning
AC Power Electrical Safety Guidelines
DC Power Electrical Safety Guidelines
DC Power Electrical Safety Guidelines and Warnings
Copper Conductors Warning
DC Power Disconnection Warning
DC Power Grounding Requirements and Warning
DC Power Wiring Sequence Warning
DC Power Wiring Terminations Warning
Agency Approvals
Agency Approvals and Compliance
Compliance Statements for NEBs Requirements
EN 60950-1 Safety of Information Technology Equipment
Canada
Compliance Statements for EMC Requirements
European Community
Japan
Compliance Statements for Environmental Requirements
Lithium Battery
Compliance Statements for Acoustic Noise
United States
Page
Physical Specifications
Physical Specifications
Physical Specifications
Page
Router Environmental Specifications
Router Environmental Specifications
Router Environmental Specifications
Page
Chassis Grounding Specifications
Power Guidelines, Requirements, and Specifications
Grounding Cable Lug Specification
DC Power Specifications and Requirements
Grouding Cable Specification
DC Power Specifications
Grounding Cable Specifications
DC Power System Electrical Specifications
Power Consumption for DC-Powered Routers
DC Power Supply Electrical Specifications
DC Power System Electrical Specifications
Component Power Requirements
DC-Powered Base Router Power Requirements
DC Power Circuit Breaker Specifications
On page 170 shows a typical DC source cabling arrangement
DC Power Cable Specifications
DC Power Cable Lug Specifications
AC Power Specifications and Requirements
DC Power Cable Specifications
DC Power Cable Specifications
Power Consumption for AC-Powered Routers
AC Power Specifications
AC Power System Electrical Specifications
AC Power Supply Electrical Specifications
Component Power Requirements for AC-Powered Routers
AC Base Router Power Requirements
AC Power Cord Specifications
AC Power Circuit Breaker Specifications
AC Plug Types
AC Power Cord Specifications
Distance Limitations for Signaling
Site Electrical Wiring Guidelines
Radio Frequency Interference
Electromagnetic Compatibility
Site Electrical Wiring Guidelines
Page
Network Cable Specifications and Guidelines
Cable and Wire Guidelines and Specifications
Fiber-Optic and Network Cable Specifications
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable
Attenuation and Dispersion in Fiber-Optic Cable
Calculating Power Margin for Fiber-Optic Cable
Calculating Power Budget for Fiber-Optic Cable
Estimated Values for Factors Causing Link Loss
Estimated Values for Factors Causing Link Loss
Routing Engine Interface Cable and Wire Specifications
Page
RJ-45 Connector Pinout for the Routing Engine Ethernet Port
Cable Connector Pinouts
Pin Signal Description
RJ-45 Connector Pinout for the AUX and Console Ports
Removing Components from the Chassis
Installing the Router Without a Mechanical Lift
Removing a Power Supply Before Installing the Router
Removing the Power Supplies
Removing SCBs
Removing the Fan Tray
Removing DPCs
Removing a DPC
Installing the Chassis in the Rack Manually
Reinstalling the Power Supplies
Reinstalling Components in the Chassis
To reinstall the fan tray
Reinstalling the Fan Tray
To reinstall an SCB see on
Reinstalling SCBs
To reinstall a DPC see on
Reinstalling DPCs
Locating Component Serial Numbers
Contacting Customer Support and Returning Hardware
On page 198 attached to the component body
MX240 Chassis Serial Number Label
MX240 Chassis Serial Number Label
SCB Serial Number Label
DPC Serial Number Label
Power Supply Serial Number Labels
Routing Engine Serial Number Label
AC Power Supply Serial Number Label
Information You Might Need to Supply to Jtac
Contacting Customer Support
Return Procedure
Packing the Router for Shipment
Packing Components for Shipment
Page
Index on
Index
MX240 Ethernet Services Router Hardware Guide Index
Symbols
CLI
EMC EMI
Jtac
See also warnings
Specifications AC power cord 174 Cable 179 Power 170
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