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Maintain the ACX7020 Transceivers and Fiber-Optic Cables

Learn how to install and replace the transceivers and fiber-optic cables.

The transceivers for the ACX7020 routers are hot-pluggable. You can remove and replace them without powering off the device, but the routing function is interrupted until you replace the component.

To understand how to install a transceiver in or remove one from an ACX7020 router, read the following sections:

Remove a Transceiver

Before you remove a transceiver from a device, ensure that you have taken the necessary precautions for the safe handling of lasers (see General Laser Safety Guidelines and Laser and LED Safety Guidelines and Warnings).

Ensure that you have the following parts and tools available:

  • An antistatic bag or an antistatic mat (not provided)

  • Rubber safety caps to cover the transceiver and fiber-optic cable connector (not provided)

  • A dust cover (provided) to cover the port or a replacement transceiver

Note:

After you remove a transceiver or when you change the media-type configuration, wait for 6  seconds for the interface to display the operational commands.

To remove a transceiver from a device:

  1. Place the antistatic bag or antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Label the cable connected to the transceiver so that you can reconnect it correctly.
  4. Remove the cable connected to the transceiver (see How to Disconnect a Fiber-Optic Cable from a Transceiver on an ACX7020 Router). Cover the transceiver and the end of each fiber-optic cable connector with a rubber safety cap immediately after disconnecting the fiber-optic cables.
  5. If there is a cable management system, 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:

    Do not bend the 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. By using your fingers, pull open the ejector lever on the transceiver to unlock the transceiver.
    CAUTION:

    Before removing the transceiver, make sure that you open the ejector lever completely until you hear it click. Doing this prevents damage to the transceiver.
  7. Grasp the transceiver ejector lever and gently slide the transceiver approximately 0.5 in. (1.3 cm) straight out of the port.
    CAUTION:

    To prevent ESD damage to the transceiver, do not touch the connector pins at the end of the transceiver.
  8. By using your fingers, grasp the body of the transceiver and pull it straight out of the port.
    Note:

    When you stack copper SFP transceivers in the top row and bottom row ports of the ACX7020 router in a belly-to-belly configuration, you must exercise caution while removing the transceivers. To remove the transceiver from the top row, begin by pulling down the ejector lever to unlock the transceiver. Once unlocked, grip the ejector lever using your fingers, gently lift the transceiver upward, and slide it out of the port.

    For a transceiver in the bottom row, push the ejector lever upward to unlock the transceiver. After unlocking, grip the ejector lever with your fingers, gently push the transceiver downward, and slide it out of the port.

    To facilitate easier removal and minimize potential issues, it’s best to not install copper SFPs in both the top and bottom ports simultaneously.
  9. Place the transceiver in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
  10. Place the dust cover over the empty port or install the replacement transceiver.

Install a Transceiver

Before you install a transceiver in a device, ensure that you have taken the necessary precautions for safe handling of lasers (see General Laser Safety Guidelines and Laser and LED Safety Guidelines and Warnings).

Ensure that you have a rubber safety cap available to cover the transceiver.

Note:

After you insert a transceiver or after you change the media-type configuration, wait for 6 seconds for the interface to display operational commands.
Note:

We recommend that you use only optical transceivers and optical connectors purchased from Juniper Networks with your Juniper Networks device.
CAUTION:

If you face a problem running a Juniper Networks device that uses a third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend that you check the third-party optic or cable and potentially replace it with an equivalent Juniper Networks optic or cable that is qualified for the device.

To install a transceiver:

CAUTION:

To prevent electrostatic discharge (ESD) damage to the transceiver, do not touch the connector pins at the end of the transceiver.
  1. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  2. Remove the transceiver from its bag.
  3. Check to see whether the transceiver is covered with a rubber safety cap. If it is not, cover the transceiver with a rubber safety cap.
  4. If the port in which you want to install the transceiver is covered with a dust cover, remove the dust cover and save it in case you need to cover the port later. If you are hot-swapping a transceiver, wait for at least 10 seconds after removing the transceiver from the port before installing a new transceiver.
    CAUTION:

    Before you slide the transceiver into the port, ensure that the transceiver is aligned correctly. Misalignment might cause the pins to bend, making the transceiver unusable.
  5. Using both hands, carefully insert the transceiver in the empty port. The connectors must face the chassis. Slide the transceiver in gently until it is fully seated.
  6. Remove the rubber safety cap from the transceiver and the end of the cable, and insert the cable into the transceiver.
    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.
  7. If there is a cable management system, 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.

How to Connect a Fiber-Optic Cable to a Transceiver on an ACX7020 Router

Before you connect a fiber-optic cable to an optical transceiver installed in the ACX7020 router, ensure that you have taken the necessary precautions for safe handling of lasers (see General Laser Safety Guidelines and Laser and LED Safety Guidelines and Warnings).

To connect a fiber-optic cable to an optical transceiver installed in the ACX7020 router:

  1. If the fiber-optic cable connector is covered by a rubber safety cap, remove the cap. Save the cap.
  2. If the optical transceiver is covered by a rubber safety cap, remove the cap. Save the cap.
  3. Insert the cable connector into the optical transceiver.
  4. Secure the cables so that they are not supporting their own weight. Place excess cable out of the way in a neatly coiled loop. Placing fasteners on a loop helps cables maintain their shape.
    CAUTION:

    Do not bend fiber-optic cables beyond their minimum bend radius. Bending the cables beyond their minimum bend radius can damage the cables and cause problems that are difficult to diagnose.
    CAUTION:

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

How to Disconnect a Fiber-Optic Cable from a Transceiver on an ACX7020 Router

Before you disconnect a fiber-optic cable from an optical transceiver installed in a ACX7020 router, ensure that you have taken the necessary precautions for safe handling of lasers (see General Laser Safety Guidelines and Laser and LED Safety Guidelines and Warnings).

Ensure that you have the following parts and tools available:

  • Rubber safety cap to cover the transceiver (not provided)

  • Rubber safety cap to cover the fiber-optic cable connector (not provided)

To disconnect a fiber-optic cable from an optical transceiver installed in the ACX7020 router:

  1. (Recommended) Disable the port in which the transceiver is installed by including the disable statement at the [edit interfaces] hierarchy level for the specific interface.
  2. Carefully unplug the fiber-optic cable connector from the transceiver.
  3. Cover the transceiver with a rubber safety cap.
  4. Cover the fiber-optic cable connector with the rubber safety cap.

How to Maintain Fiber-Optic Cable for an ACX7020 Router

To maintain the fiber-optic cables:

  • When you unplug a fiber-optic cable from a transceiver, place rubber safety caps over the transceiver and on the end of the cable.

  • Anchor the fiber-optic cable to avoid stress on the connectors. When you attach a fiber-optic cable to a transceiver, be sure to secure the fiber-optic cable so that it does not support its own weight as it hangs to the floor. Never let a fiber-optic cable hang free from the connector.

  • Do not bend fiber-optic cables beyond their minimum bend radius. Bending the cables beyond their minimum bend radius can damage the cables and cause problems that are difficult to diagnose.

  • Frequent plugging and unplugging of fiber-optic cables into and out of optical instruments can damage the instruments, which are expensive to repair. Attach a short fiber extension to the optical equipment. Any wear and tear due to frequent plugging and unplugging is then absorbed by the short fiber extension. This short fiber extension is easier and less expensive to replace than the instruments.

  • Keep fiber-optic cable connections clean. Microdeposits of oil and dust in the canal of the transceiver or cable connector can cause loss of light, reduction in signal power, and possibly intermittent problems with the optical connection.

    To clean the transceiver canal, use an appropriate fiber-cleaning device such as RIFOCS Fiber Optic Adaptor Cleaning Wands (part number 946). Follow the directions in the cleaning kit you use.

    After you clean the transceiver, make sure that the connector tip of the fiber-optic cable is clean. Use only an approved alcohol-free fiber-optic cable cleaning kit such as the Cletop-S® Fiber Cleaner. Follow the directions in the cleaning kit you use.