Juniper Networks
manual
MX240 Ethernet Services Router Hardware Guide
Troubleshooting
Specs
Install
Parts list
Alarm Relay Contacts
Symbols
Connecting the Router
Maintenance
Configuring Junos Software
Restricted Access Area Warning
Page 64
MX240 Ethernet Services Router Hardware Guide
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Contents
Hardware Guide
North Mathilda Avenue Sunnyvale, California
MX240 Ethernet Services Router Hardware Guide
Iii
End User License Agreement
Page
Table of Contents
Part Setting Up the Router
AC Power Supply LEDs
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
Connecting the Cable to a Management Console or Auxiliary
100
102
103
Part Appendixes
121
125
126
155
161
163
165
Removing the Power Supplies 188 Removing the Fan Tray 189
176
179
183
Part Index
203
204
205
Rear View of a Fully Configured AC-Powered Router Chassis
List of Figures
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
List of Technical Publications
Convention Description Plain text like this
Technical Documentation for Supported Routing Platforms
Junos Software for Supported Routing Platforms
Junos References
Web User Guide
Xxiii
Junos Software with Enhanced Services Documentation
Junos Software Network Operations Guides
Traffic classification
Obtaining Documentation
Documentation Feedback
Requesting Technical Support
Self-Help Online Tools and Resources
Page
MX240 Router Overview
Router Overview on Hardware Components on
Page
Router Overview
Router Description
Component Redundancy
Hardware Components
Router Chassis
Front View of a Fully Configured Router Chassis
Rear View of a Fully Configured AC-Powered Router Chassis
Midplane
Dense Port Concentrators DPCs
Typical DPCs Supported on the MX240 Router
Four-Port 10-Gigabit Ethernet DPC LEDs
DPC Components
40-Port Gigabit Ethernet DPC LEDs
Switch Control Board SCB
Host Subsystem
SCB Slots
SCB Redundancy
SCB Components
Switch Control Board LEDs
SCB LEDs
Routing Engine
Routing Engine Components
Ethernet
Routing Engine Interface Ports
Routing Engine Boot Sequence
Routing Engine LEDs
Cable Management System
Craft Interface
Alarm LEDs and Alarm Cutoff/Lamp Test Button
SCB LEDs on Fan LEDs on Alarm Relay Contacts on
Power Supply LEDs
Alarm LEDs and Alarm Cutoff/Lamp Test Button
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 LEDs
AC Power Supply
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 Requirements
Rack Size and Strength
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
Contents of the Shipping Crate
Verifying Parts Received
Parts List for a Fully Configured Router
Accessory Box Parts List
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
Installing the Mounting Hardware for an Open-Frame Rack
Moving the Mounting Brackets for Center-Mounting the Router
MX240 Ethernet Services Router Hardware Guide
Safety Requirements, Warnings, and Guidelines
Installing the Router
Installing the Router Using a Mechanical Lift
Installing the Router Using a Lift
Tools Required
Installing the Router in the Rack
Page
Connecting the Router
Connecting the Router to Management and Alarm Devices
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
Connecting Power to an AC-Powered Router
Grounding the Router
Powering On an AC-Powered Router
To power on an AC-powered router
Connecting Power to a DC-Powered Router
Grounding and Providing Power to the Router
Powering On a DC-Powered Router
Connecting DC Power to the Router
Powering Off the Router
MX240 Ethernet Services Router Hardware Guide
Configuring Junos Software
Configuring the Junos Software
Configuring the Junos Software on
Log in as the root user. There is no password
Enter configuration mode
Configure the router’s domain name
Configure the IP address of a DNS server
Start the CLI
Commit the configuration to activate it on the router
Edit Root@# commit
Page
Part
Page
Routine Maintenance Procedures
Maintaining Hardware Components
Maintaining the Air Filter
Maintaining Cooling System Components
Maintaining the Fan Tray
Maintaining Hardware Components
Maintaining the Host Subsystem
User@host show chassis routing-engine
User@host show chassis environment cb
Maintaining Packet Forwarding Engine Components
Maintaining DPCs
User@host show chassis fpc detail
Maintaining DPC Cables
Handling and Storing DPCs
Holding a DPC
DPC Edges
Do Not Grasp the Connector Edge
Storing a DPC
Do Not Rest the DPC on an Edge
Maintaining the Power Supplies
Troubleshooting Hardware Components
Overview of Troubleshooting Resources
Command-Line Interface
Juniper Networks Technical Assistance Center
LEDs
Chassis and Interface Alarm Messages
Craft Interface LEDs
Component LEDs
Troubleshooting the Cooling System
Airflow Through the Chassis
Troubleshooting DPCs
Troubleshooting the Power System
Basics and Services Command Reference
Temperature DC output
Page
Replacing Hardware Components
Field-Replaceable Units FRUs
Field-Replaceable Units
Tools and Parts Required
Removing the Craft Interface
Replacing the Craft Interface
To remove the craft interface see on
Installing the Craft Interface
To install the craft interface see on
Replacing Alarm Relay Wires
Disconnecting the Alarm Relay Wires
Connecting the Alarm Relay Wires
Replacing Cooling System Components
Replacing the Fan Tray
Removing the Fan Tray
Installing the Fan Tray
To install the fan tray see on
Replacing the Air Filter
Removing an Air Filter
To install the air filter see on
Installing the Air Filter
To remove the air filter see on
Replacing Host Subsystem Components
Taking the Host Subsystem Offline
Replacing an SCB
Master in the Current state field
Operating and Positioning the SCB Ejectors
Removing an SCB
Removing an SCB
Installing an SCB
To install an SCB see on
To check the status of the SCB, use the CLI command
Replacing a Routing Engine
Removing a Routing Engine
Installing a Routing Engine
Removing a Routing Engine
Installing a Routing Engine
Replacing Connections to Routing Engine Interface Ports
Installing the Management Ethernet Cable
Replacing 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
Installing a DPC
To install a DPC see on
User@hostrequest chassis fpc slot slot-numberonline
Installing a DPC
Removing an SFP or XFP Transceiver
Removing SFPs or XFPs
Installing an SFP or XFP Transceiver
Replacing Power System Components
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
Installing a DC Power Supply
Removing a DC Power Supply from an MX240 Router
Replacing Hardware Components
Replacing an AC Power Cord
Installing a DC Power Supply in an MX240 Router
Disconnecting an AC Power Cord
Replacing a DC Power Supply Cable
Connecting an AC Power Supply Cord
Disconnecting a DC Power Supply Cable
Connecting a DC Power Supply Cable
Replacing the Cable Management System
Removing the Cable Management System
Installing the Cable Management System
Removing or Installing the Cable Management System
Appendixes
MX240 Ethernet Services Router Hardware Guide Appendixes
Safety and Regulatory Compliance Information
Definition of Safety Warning Levels
Safety Guidelines and Warnings
General Safety Guidelines and Warnings
Qualified Personnel Warning
Restricted Access Area Warning
Appendix a Safety and Regulatory Compliance Information
Fire Safety Requirements
Preventing Electrostatic Discharge Damage
Fire Suppression
Installation Safety Guidelines and Warnings
Fire Suppression Equipment
Installation Instructions Warning
Chassis-Lifting Guidelines
Rack-Mounting Requirements and Warnings
MX240 Ethernet Services Router Hardware Guide
Appendix a Safety and Regulatory Compliance Information
Laser and LED Safety Guidelines and Warnings
Ramp Warning
Class 1 Laser Product Warning Class 1 LED Product Warning
General Laser Safety Guidelines
Waarschuwing Klasse 1 LED-product
Laser Beam Warning
Maintenance and Operational Safety Guidelines and Warnings
Radiation from Open Port Apertures Warning
Battery Handling Warning
Operating Temperature Warning on Product Disposal Warning on
Jewelry Removal Warning
Operating Temperature Warning
Lightning Activity Warning
Product Disposal Warning
Electrical Safety Guidelines and Warnings
Case of Electrical Accident
General Electrical Safety Guidelines and Warnings
Grounded Equipment Warning
MX240 Ethernet Services Router Hardware Guide
Power Disconnection Warning
AC Power Electrical Safety Guidelines
TN Power Warning
DC Power Electrical Safety Guidelines and Warnings
DC Power Electrical Safety Guidelines
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 and Compliance
Agency Approvals
EN 60950-1 Safety of Information Technology Equipment
Compliance Statements for NEBs Requirements
Canada
Compliance Statements for EMC Requirements
European Community
Japan
Lithium Battery
Compliance Statements for Environmental Requirements
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
Grouding Cable Specification
DC Power Specifications and Requirements
DC Power Specifications
Grounding Cable Specifications
Power Consumption for DC-Powered Routers
DC Power System Electrical Specifications
DC Power Supply Electrical Specifications
DC Power System Electrical Specifications
DC-Powered Base Router Power Requirements
Component Power Requirements
DC Power Circuit Breaker Specifications
DC Power Cable Specifications
On page 170 shows a typical DC source cabling arrangement
AC Power Specifications and Requirements
DC Power Cable Lug Specifications
DC Power Cable Specifications
DC Power Cable Specifications
AC Power Specifications
Power Consumption for AC-Powered Routers
AC Power System Electrical Specifications
AC Power Supply Electrical Specifications
AC Base Router Power Requirements
Component Power Requirements for AC-Powered Routers
AC Power Circuit Breaker Specifications
AC Power Cord Specifications
AC Power Cord Specifications
AC Plug Types
Site Electrical Wiring Guidelines
Distance Limitations for Signaling
Radio Frequency Interference
Electromagnetic Compatibility
Site Electrical Wiring Guidelines
Page
Cable and Wire Guidelines and Specifications
Network Cable Specifications and Guidelines
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
Cable Connector Pinouts
RJ-45 Connector Pinout for the Routing Engine Ethernet Port
RJ-45 Connector Pinout for the AUX and Console Ports
Pin Signal Description
Installing the Router Without a Mechanical Lift
Removing Components from the Chassis
Removing the Power Supplies
Removing a Power Supply Before Installing the Router
Removing the Fan Tray
Removing SCBs
Removing DPCs
Removing a DPC
Installing the Chassis in the Rack Manually
Reinstalling Components in the Chassis
Reinstalling the Power Supplies
Reinstalling the Fan Tray
To reinstall the fan tray
Reinstalling SCBs
To reinstall an SCB see on
Reinstalling DPCs
To reinstall a DPC see on
Contacting Customer Support and Returning Hardware
Locating Component Serial Numbers
MX240 Chassis Serial Number Label
On page 198 attached to the component body
SCB Serial Number Label
MX240 Chassis Serial Number Label
Power Supply Serial Number Labels
DPC Serial Number Label
AC Power Supply Serial Number Label
Routing Engine Serial Number Label
Contacting Customer Support
Information You Might Need to Supply to Jtac
Return Procedure
Packing the Router for Shipment
Packing Components for Shipment
Page
Index
Index on
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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