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Maintaining MX204 Components

 

Routine Maintenance Procedures for MX204 Routers

Purpose

For optimum router performance, perform preventive maintenance procedures.

Action

  • Inspect the installation site for moisture, loose wires or cables, and excessive dust. Make sure that airflow is unobstructed around the router and into the air intake vents.

  • Check the status-reporting devices on the font panel—system alarms and LEDs.

Maintaining the MX204 Routing Engine

Purpose

For optimum router performance, verify the condition of the Routing Engine on a regular basis.

Action

On a regular basis:

  • Check the LEDs on the front panel to view information about the status of the Routing Engine.

  • To check the status of the Routing Engine on the router, issue the show chassis routing-engine command. The output is similar to the following:

    user@host> show chassis routing-engine

Replacing a SFP+ Transceiver

Small form-factor pluggable plus transceivers (SFP+) are enhanced SFP transceivers that provides support for data rates of up to 10 Gbps for fiber-optic or copper interfaces. SFP+ transceivers are hot-insertable and hot-removable. Removing an SFP+ transceiver does not interrupt router functioning, but the removed SFP+ transceiver no longer receives or transmits data.

Figure 1: Small Form-Factor Pluggable (SFP) Transceiver
Small Form-Factor Pluggable (SFP)
Transceiver

Removing an SFP+ Transceiver

To remove an SFP+ transceiver:

  1. Have ready a replacement transceiver or a transceiver slot plug, an antistatic mat, and a rubber safety cap for the transceiver.
  2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  3. Label the cables connected to the transceiver so that you can reconnect them correctly later.
  4. Remove the cable connector from the transceiver. Immediately cover the transceiver and the end of the cable with a rubber safety cap.Warning

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

  5. Pull the ejector handle out from the transceiver to unlock the transceiver. Caution

    Make sure that you open the ejector handle completely until you hear it click. This prevents damage to the transceiver.

    Use needlenose pliers to pull the ejector handle out from the transceiver.

  6. Grasp the transceiver ejector handle, and pull the transceiver approximately 0.5 in. (1.3 cm) out of the interface port.
  7. Using your fingers, grasp the body of the transceiver, and pull it the rest of the way out of the interface port.
  8. Place a rubber safety cap over the transceiver.
  9. Place the removed transceiver on an antistatic mat or in an electrostatic bag.
Caution

After removing a transceiver from the chassis, wait at least 30 seconds before reinserting it or inserting a transceiver into a different slot.

Installing a SFP+ Transceiver

To install an SFP+ transceiver:

  1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  2. Take each transceiver to be installed out of its electrostatic bag, and identify the slot on the component where it will be installed.
  3. Verify that each transceiver is covered by a rubber safety cap. If it is not, cover the transceiver with a safety cap.
  4. Carefully align the transceiver with the slots in the component. The connectors should face the component.
  5. Slide the transceiver until the connector is seated in the component slot. If you are unable to fully insert the transceiver, make sure the connector is facing the right way.
  6. Close the ejector handle of the transceiver.
  7. Remove the rubber safety cap from the transceiver and the end of the cable. Insert the cable into the transceiver.Warning

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

  8. Verify that the status LEDs on the component faceplate indicate that the SFP is functioning correctly. For more information about the component LEDs, see the MX Series Interface Module Reference.

Replacing a QSFP28 Transceiver

28-Gbps quad small form-factor pluggable (QSFP28) transceivers are optical ACX5448 installed in an MPC, a MIC, or a router. QSFP28 transceivers are hot-insertable and hot-removable. Removing a QSFP28 transceiver does not interrupt router functioning, but the removed QSFP28 transceiver no longer receives or transmits data.

Removing a QSFP28 Transceiver

To remove a QSFP28 transceiver (see Figure 2):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the QSFP28 transceiver. Have ready a rubber safety cap for the QSFP28 transceiver and the cable.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  3. Label the cable connected to the QSFP28 transceiver so that you can later reconnect it to the correct QSFP28 transceiver.
  4. Disconnect the cable from the transceiver. Immediately cover the transceiver and the end of the cable with a rubber safety cap.Warning

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

    Caution

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  5. Arrange the cable in the cable management system to prevent it from dislodging or developing stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.Caution

    Avoid bending 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.

  6. Pull the transceiver’s rubber handle straight back. The locking pins on the transceiver automatically releases the transceiver. Place the transceiver on the antistatic mat or in the electrostatic bag.
    Figure 2: 28-Gbps Quad Small Form-Factor Pluggable (QSFP28) Transceiver
    28-Gbps Quad Small Form-Factor
Pluggable (QSFP28) Transceiver

Installing a QSFP28 Transceiver

To install a replacement QSFP28 transceiver:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Verify that a rubber safety cap covers the QSFP28 transceiver.
  3. Orient the transceiver over the port in the MIC, MPC, or router so that the QSFP28 connector faces the appropriate direction.
  4. Slide the transceiver into the slot until the locking pins lock in place. If there is resistance, remove the transciever and flip it so that the connector faces the other direction.
  5. Remove the rubber safety cap from the transceiver and the end of the cable, and insert the cable into the transceiver.Warning

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

    Caution

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  6. Arrange the cable in the cable management system to prevent the cable from dislodging or developing stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.Caution

    Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.

    Caution

    Avoid bending 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.

  7. Verify that the status LEDs on the MPC, MIC, or router faceplate indicate that the QSFP28 transciever is functioning correctly. For more information about the MPC, MIC, or router LEDs, see the MX Series Interface Module Reference. You can also verify interface port functioning by issuing the show chassis fpc pic-status command.