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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
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. One Ethernet cable is provided with the router.
To connect to the
ETHERNET port on the Routing
- Turn off the power to the management device.
- Plug one end of the Ethernet cable (Figure 2 shows the connector)
ETHERNETport 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. One serial cable
with an RJ-45 connector and a DB-9 connector is provided with the
router. To connect a device to the
and another device to the
AUX port, you must
supply an additional cable.
To connect a management console or auxiliary device:
- Turn off the power to the console or auxiliary device.
- Plug the RJ-45 end of the serial cable (Figure 4 shows the connector)
CONSOLEport on the Routing Engine. Figure 3 shows the ports.
- Plug the female DB-9 end into the device's serial port.
For console devices, configure the serial port to the following values:
Connecting the MX240 Router to an External Alarm-Reporting Device
the router to external alarm-reporting devices, attach wires to the
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
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.
Connecting DPC, MPC, MIC, or PIC Cables to the MX240 Router
- Have ready a length of the type of cable used by the component. For cable specifications, see the MX Series Interface Module Reference.
- Remove the rubber safety plug from the cable connector
Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to a transceiver emit laser light that can damage your eyes.
Do not leave a fiber-optic transceiver uncovered except when inserting or removing a cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.
- Insert the cable connector into the cable connector
port on the faceplate.
The XFP cages and optics on the components are industry standard parts that have limited tactile feedback for insertion of optics and fiber. You need to insert the optics and fiber firmly until the latch is securely in place.
- Arrange the cable to prevent
it from dislodging or developing stress points. Secure the cable so
that it is not supporting its own weight as it hangs to the floor.
Place excess cable out of the way in a neatly coiled loop.
Avoid bending a fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.
Do not let fiber-optic cables hang free from the connector. Do not allow the fastened loops of a cable to dangle, which stresses the cable at the fastening point.