- play_arrow Fast Track: Initial Installation
- play_arrow Overview
- MX240 System Overview
- MX240 Chassis
- MX240 Cooling System
- MX240 Air Deflector Kits
- MX240 AC Power System
- MX240 DC Power System
- MX240 Host Subsystem Components and Descriptions
- MX240 Line Card Components and Descriptions
- Services Processing Card—MX-SPC3 Services Card
- MX-Series Switch Control Board (SCB) Description
- play_arrow Site Planning, Preparation, and Specifications
- play_arrow Maintaining, Installing and Replacing Components
- Maintaining MX240 Components
- Maintaining the MX240 Cooling System Component
- Maintaining MX240 Host Subsystem Components
- Maintaining MX240 Interface Modules
- Maintaining MX-SPC3 Services Card
- Maintaining MX240 Power System Components
- Maintaining MX240 SFP and XFP Transceivers
- Maintaining MX240 Switch Control Boards
- play_arrow Troubleshooting Hardware
- play_arrow Contacting Customer Support and Returning the Chassis or Components
- play_arrow Safety and Compliance Information
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Fire Safety Requirements
- Warning Statement for Norway and Sweden
- Preventing Electrostatic Discharge Damage to an MX240 Router
- Installation Instructions Warning
- MX240 Chassis Lifting Guidelines
- Ramp Warning
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Laser and LED Safety Guidelines and Warnings
- Radiation from Open Port Apertures Warning
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Prevention of Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- MX240 DC Power Electrical Safety Guidelines
- DC Power Copper Conductors Warning
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Midplane Energy Hazard Warning
- Multiple Power Supplies Disconnection Warning
- Action to Take After an Electrical Accident
- Site Electrical Wiring Guidelines for MX Series Routers
- Agency Approvals and Compliance Statements
Connecting the MX240 Router to the Network
Tools and Parts Required for MX240 Router Connections
To connect the router to management devices and line cards, you need the following tools and parts:
Phillips (+) screwdrivers, numbers 1 and 2
2.5-mm flat-blade (–) screwdriver
2.5-mm Phillips (+) screwdriver
Wire cutters
Electrostatic discharge (ESD) grounding wrist strap
Connecting the MX240 Router to a Network for Out-of-Band Management
To connect the Routing Engine to a network for out-of-band management, connect an Ethernet cable with RJ-45 connectors to the ETHERNET port on the Routing Engine. To connect to the ETHERNET port on the Routing Engine:
- Turn off the power to the management device.
- Plug one end of the Ethernet cable (Figure 2 shows the connector) into the ETHERNET port on the Routing Engine. Figure 1 shows the port.
- Plug the other end of the cable into the network device.


Connecting the MX240 Router to a Management Console or Auxiliary Device
To use a system console to configure and manage the Routing Engine, connect it to the appropriate CONSOLE port on the Routing Engine. To use a laptop, modem, or other auxiliary device, connect it to the AUX port on the Routing Engine. Both ports accept a cable with an RJ-45 connector. To connect a device to the CONSOLE port and another device to the AUX port, you must supply two separate cables.
We no longer include the RJ-45 console cable with the DB-9 adapter as part of the device package. If the console cable and adapter are not included in your device package, or if you need a different type of adapter, you can order the following separately:
RJ-45 to DB-9 adapter (JNP-CBL-RJ45-DB9)
RJ-45 to USB-A adapter (JNP-CBL-RJ45-USBA)
RJ-45 to USB-C adapter (JNP-CBL-RJ45-USBC)
If you want to use RJ-45 to USB-A or RJ-45 to USB-C adapter you must have X64 (64-Bit) Virtual COM port (VCP) driver installed on your PC. See, https://ftdichip.com/drivers/vcp-drivers/ to download the driver.
To connect a management console or auxiliary device:


See Also
Connecting the MX240 Router to an External Alarm-Reporting Device
To connect the router to external alarm-reporting devices, attach wires to the RED and YELLOW relay contacts on the craft interface. (See Figure 5.) A system condition that triggers the red or yellow alarm LED on the craft interface also activates the corresponding alarm relay contact.
The terminal blocks that plug into the alarm relay contacts are supplied with the router. They accept wire of any gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm2), which is not provided. Use the gauge of wire appropriate for the external device you are connecting.
To connect an external device to an alarm relay contact (see Figure 5):
- Prepare the required length of wire with gauge between 28-AWG and 14-AWG (0.08 and 2.08 mm2).
- While the terminal block is not plugged into the relay contact, use a 2.5-mm flat-blade screwdriver to loosen the small screws on its side. With the small screws on its side facing left, insert wires into the slots in the front of the block based on the wiring for the external device. Tighten the screws to secure the wire.
- Plug the terminal block into the relay contact, and use a 2.5-mm flat-blade screwdriver to tighten the screws on the face of the block.
- Attach the other end of the wires to the external device.
To attach a reporting device for the other kind of alarm, repeat the procedure.
