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    Replacing Connections to the M40e Routing Engine Interface Ports

    Replacing the M40e Management Ethernet Cable

    The ports on the CIP connect the Routing Engine to external management devices (see Figure 1).

    Figure 1: Routing Engine Interface Ports and Alarm Relay Contacts

    Image g001204.gif

    For cable specifications, see Routing Engine Interface Cable and Wire Specifications for the M40e Router. To replace the management Ethernet Cable:

    1. Press the tab on the connector and pull the connector straight out of the ETHERNET port. Figure 2 shows the connector.
    2. Disconnect the cable from the network device.
    3. Plug one end of the replacement cable into the appropriate ETHERNET port.Figure 1 shows the external device ports on the CIP. The ports labeled HOST 0 connect to the Routing Engine in the upper Routing Engine slot (RE 0), and the ports labeled HOST 1 connect to the Routing Engine in the lower Routing Engine slot (RE 1).
    4. Plug the other end of the cable into the network device.

    Figure 2: Ethernet Cable Connectors

    Image g003781.gif

    Replacing the M40e Console or Auxiliary Cable

    To use a system console to configure and manage the Routing Engine, connect it to the appropriate CONSOLE port on the CIP. To use a laptop, modem, or other auxiliary device, connect it to the appropriate AUXILIARY port on the CIP. Both ports accept a cable with an RJ-45 connector. One RJ-45/DB-9 cable is provided with the router. To connect a device to the other port, you must supply another cable. For cable specifications, see Routing Engine Interface Cable and Wire Specifications for the M40e Router.

    Figure 3: Routing Engine Interface Ports and Alarm Relay Contacts

    Image g001204.gif

    To connect a management console or auxiliary device:

    1. Plug one end of the replacement cable into the appropriate CONSOLE or AUXILIARY port.Figure 3 shows the external device ports on the CIP. The ports labeled HOST 0 connect to the Routing Engine in the upper Routing Engine slot (RE 0), and the ports labeled HOST 1 connect to the Routing Engine in the lower Routing Engine slot (RE 1).
    2. Plug the the other end of the cable into the device's serial port.

    Replacing Alarm Relay Wires on the M40e Router

    To connect the router to external alarm-reporting devices, attach wires to the RED ALARM and YELLOW ALARM relay contacts on the CIP. 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 24-AWG and 12-AWG (0.20 and 3.33 mm2), which is not provided. Use the wire gauge appropriate for the external device you are connecting.

    To replace the wires connecting to an alarm-reporting device:

    1. Disconnect the existing wire at the external device.
    2. Prepare the required length of replacement wire with gauge between 24-AWG and 12-AWG (0.20 and 3.33 mm2).
    3. Using a 2.5-mm flat-blade screwdriver, loosen the small screws on the face of the terminal block and remove the block from the relay contact.
    4. Using the 2.5-mm flat-blade screwdriver, loosen the small screws on the side of the terminal block. Remove existing wires from the slots in the front of the block and insert replacement wires. Tighten the screws to secure the wire.
    5. Orient the terminal block according to the labels to the left of the appropriate relay contact (NC means “normally closed,” C means “common,” and NO means “normally open”).
    6. 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.
    7. Attach the other end of the wires to the external device.

    Published: 2010-10-28