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Removing and Installing Transceivers and Fiber-Optic Cables

 

Removing a Transceiver

The transceivers for the router are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace the transceivers without powering off the device or disrupting device functions.

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.

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

Ensure that you have the following parts and tools available:

  • Electrostatic bag or antistatic mat

  • Rubber safety caps to cover the transceiver and fiber-optic cable connector

  • Dust cover to cover the port or a replacement transceiver

Figure 1 shows how to remove a QSFP+ transceiver. The procedure is the same for all types of transceivers except the QSFP28 and CFP transceivers.

To remove a transceiver from the router:

Figure 1: Removing an SFP, SFP+, XFP, or a QSFP+ Transceiver
Removing an SFP, SFP+,
XFP, or a QSFP+ Transceiver
  1. Place an electrostatic 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 the ESD point on the router.
  3. Label the cable connected to the transceiver so that you can reconnect the cable correctly later.Warning

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

    Warning

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

    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.

  4. Remove the cable connected to the transceiver (see Disconnecting a Fiber-Optic Cable from a Router).
  5. Cover the transceiver and the end of each fiber-optic cable connector with a rubber safety cap immediately after disconnecting the fiber-optic cables.
  6. By using your fingers, pull the ejector lever away from the transceiver to unlock the transceiver.Caution

    Before removing the transceiver, make sure you open the ejector lever completely until you hear it click. 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 electrostatic discharge (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.
  9. Place the transceiver in the electrostatic bag or on the antistatic mat placed on a flat, stable surface.
  10. Cover the empty port with the dust cover or install the replacement transceiver into the port.

Installing a Transceiver

The transceivers for the router are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace transceivers without powering off the device or disrupting device functions.

Note

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

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

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

Figure 2 shows how to install a QSFP+ transceiver. The procedure is the same for all types of transceivers except the QSFP28 and CFP transceivers.

To install a transceiver in the router:

Caution

To avoid 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 the ESD point on the router.
  2. Remove the transceiver from its bag.
  3. Check whether the transceiver is covered with a rubber safety cap. If it is not, cover the transceiver with a rubber safety cap.Warning

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

  4. If the port in which you want to install the transceiver is covered with a dust cover, remove the dust cover, and save the cover 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.
  5. Using both hands, carefully place the transceiver in the empty port. The connectors must face the device chassis.Caution

    Before you slide the transceiver into the port, ensure that the transceiver is aligned correctly. Misalignment of the transceiver might cause the pins to bend, making the transceiver unusable.

  6. Slide the transceiver in gently until it is fully seated. See Figure 2 for an example of inserting a QSFP transceiver.
  7. Remove the rubber safety cap when you are ready to connect the cable to 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 cables that are connected to transceivers emit laser light that can damage your eyes.

Figure 2: Installing a Transceiver
Installing a Transceiver
  1
Ejector lever
 

Disconnecting a Fiber-Optic Cable from a Router

The router has field-replaceable optical transceivers to which you can connect fiber-optic cables.

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

Ensure that you have the following parts and tools available:

  • Rubber safety cap to cover the transceiver

  • Rubber safety cap to cover the fiber-optic cable connector

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

  1. (Recommended) Disable the port in which the transceiver is installed by using the disable statement at the [edit interfaces] hierarchy level for the specific interface.Warning

    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 transceivers emit laser light that can damage your eyes.

    Warning

    Do not stare into the laser beam emitted by an interface or view it directly with optical instruments even if the interface has been disabled.

  2. Carefully unplug the fiber-optic cable connector from the transceiver.
  3. Cover the transceiver with a rubber safety cap.Warning

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

  4. Cover the fiber-optic cable connector with the rubber safety cap.

Connecting a Fiber-Optic Cable to a Router

The router has field-replaceable unit (FRU) optical transceivers to which you can connect fiber-optic cables. You can remove and replace the cables without powering off the device or disrupting the routing functions.

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

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

Warning

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 transceivers emit laser light that can damage your eyes.

Warning

Do not stare into the laser beam emitted by an interface or view it directly with optical instruments even if the interface has been disabled.

  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.

Maintaining Fiber-Optic Cables in a Router

To maintain 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 fiber-optic cable to avoid stress on the connectors. When attaching a fiber-optic cable to a transceiver, be sure to secure the fiber-optic cable so that the cable is not supporting 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 in 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, which is easier and less expensive to replace than the instruments.

  • Keep fiber-optic cable connections clean. Microscopic deposits 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 cleaning 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.