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Connecting the MX2020 Router to Management and Alarm Devices

 

Connecting the MX2020 Router to a Network for Out-of-Band Management

To connect the CB-RE to a network for out-of-band management, connect an Ethernet cable with RJ-45 connectors to the MGMT port on the CB-RE interface. One Ethernet cable is provided with the router. To connect to the MGMT port on the CB-RE interface:

  1. Turn off the power to the management device.
  2. Plug one end of the Ethernet cable (Figure 2 shows the connector) into the MGMT port on the CB-RE interface. Figure 1 shows the port. Table 1 describes the Ethernet ports.
  3. Plug the other end of the cable into the network device.
Figure 1: Out-of-Band Management Port
 Out-of-Band Management Port
Figure 2: Out-of-Band Management Cable Connector
Out-of-Band Management Cable
Connector

Table 1: Out-of-Band Management Port on the MX2020 CB-RE

Function No.

Label

Description

3

MGMT

Dedicated management channel for device maintenance. It is also used for system administrators to monitor and manage the MX2020 remotely.

Connecting the MX2020 Router to a 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 CB-RE interface. To use a laptop, modem, or other auxiliary device, connect it to the AUX port on the CB-RE interface. 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 CONSOLE port and another device to the AUX port, you must supply an additional cable.

Warning

The MX2020 router must be adequately grounded before powering on the console or auxiliary devices, (see MX2000 Router Grounding Specifications).

To connect a management console or auxiliary device:

  1. Turn off the power to the console or auxiliary device.
  2. Plug the RJ-45 end of the serial cable (see Figure 4) into the AUX port or CONSOLE port on the CB-RE interface. Figure 3 shows the ports. Table 2 describes the auxiliary and console ports.
  3. Plug the female DB-9 end into the device's serial port.Note

    For console devices, configure the serial port to the following values:

    • Baud rate—9600

    • Parity—N

    • Data bits—8

    • Stop bits—1

    • Flow control—none

Figure 3: Console and Auxiliary Ports
Console and Auxiliary Ports
Figure 4: Console and Auxiliary Cable Connector
Console and Auxiliary Cable
Connector

Table 2: Console and Auxiliary Ports on the MX2020 CB-RE

Function No.

Label

Description

1

AUX

Connect a laptop, modem, or other auxiliary unit.

2

CONSOLE

Connect a laptop or console terminal to configure the MX2020 router.

Connecting an MX2020 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, (see Table 3). They accept wire of any gauge between 28 AWG and 14 AWG (0.08 and 2.08 mm2); the wire 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).

  1. Prepare the required length of wire with gauge between 28 AWG and 14 AWG (0.08 and 2.08 mm2).
  2. While the terminal block is not plugged into the relay contact, use a 2.5 mm flat-blade screwdriver to loosen the small screws. With the small screws 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.
  3. 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.
  4. 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.

Figure 5: Alarm Relay Contacts
Alarm Relay Contacts

Table 3: Alarm Relay Contacts

Function No.

Label

Description

1

MINOR ALARM—[NC C NO]

MAJOR ALARM—[NC C NO]

The alarm relays consist of three terminal contacts with a normal closed (NC), common (C), and normal open (NO) relays that signal a minor or major alarm when broken.