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Maintaining the SRX5400 Cables and Connectors

Maintaining SRX5400 Services Gateway Network Cables

Purpose

For optimum services gateway performance, verify the condition of the network cables.

Action

On a regular basis:

  • Secure excess cable in tidy loops that do not obstruct access to the services gateway. Do not allow fastened loops of cable to dangle from the connector, because this stresses the cable at the fastening point. Putting fasteners on the loops helps to maintain their shape.

  • Keep the cable connections clean and free of dust and other particles, which can cause drops in the received power level. Always inspect cables and clean them if necessary before connecting an interface.

  • Label both ends of the cables to identify them.

The following guidelines apply specifically to fiber-optic cables:

  • When you unplug a fiber-optic cable, always place a rubber safety plug over the transceiver on the MIC faceplate and on the end of the cable.

  • Anchor fiber-optic cables to avoid stress on the connectors. Be sure to secure fiber-optic cables so that they do not support their own weight as they hang to the floor. Never let fiber-optic cable hang free from the connector.

  • Avoid bending fiber-optic cable beyond its bend radius. An arc smaller than a few inches can damage the cable and cause problems that are difficult to diagnose.

  • Frequent plugging and unplugging of fiber-optic cable into and out of optical instruments can cause damage to the instruments that is expensive to repair. Instead, 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 easy and inexpensive to replace.

  • Keep fiber-optic cable connections clean. Small microdeposits of oil and dust in the canal of the transceiver or cable connector could cause loss of light, reducing signal power and possibly causing intermittent problems with the optical connection.

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

    After you clean an optical 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 Opptex Cletop-S Fiber Cleaner. Follow the directions for the cleaning kit you use.

Replacing the Management Ethernet Cable on the SRX5400 Services Gateway

One Ethernet cable with RJ-45 connectors is provided with the services gateway.

Before you begin to replace the management ethernet cable:

Ensure that you have the following available:

  • ESD grounding strap

To replace the cable connected to the ETHERNET port:

  1. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  2. Press the tab on the connector and pull the connector straight out of the port. Figure 1 shows the connector.
  3. Disconnect the cable from the network device.
  4. Plug one end of the replacement cable into the ETHERNET port. Figure 2 shows the port.
  5. Plug the other end of the cable into the network device.
Figure 1: Cable ConnectorCable Connector
Figure 2: Ethernet PortEthernet Port

Replacing the SRX5400 Services Gateway Console or Auxiliary Cable

Before you begin to replace the console or auxiliary Cable:

Ensure that you have the following available:

  • ESD grounding strap

To use a system console to configure and manage the Routing Engine, connect it to the CONSOLE port on the Routing Engine. To use a laptop, modem, or other auxiliary device, connect it to the AUX port on the Routing Engine. Both ports accept a cable with an RJ-45 connector. One RJ-45/DB-9 cable is provided with the services gateway. If you want to connect a device to both ports, you must supply another cable.

To replace a cable connected to a management console or auxiliary device:

  1. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  2. Press the tab on the connector and pull the connector straight out of the port.
  3. Disconnect the cable from the console or auxiliary device.
  4. Plug the RJ-45 end of the replacement serial cable into the CONSOLE or AUX port. Figure 3 shows the external device ports on the Routing Engine.
  5. Plug the DB-9 socket end into the console or auxiliary device's serial port.
Figure 3: Auxiliary and Console PortsAuxiliary and Console Ports

Replacing an SRX5400 Services Gateway Network Cable

Removing an SRX5400 Services Gateway Network Cable

Removing and installing network cables does not affect services gateway function, except that the component does not receive or transmit data while its cable is disconnected.

To remove a fiber-optic cable from a MIC:

  1. If the component connects to fiber-optic cable, have ready a rubber safety cap for each cable and transceiver.
  2. If removing all cables connected to a MIC, use one of the following methods to take the MIC offline:
    • Press the online/offline button on the port module. Use a narrow-ended tool that fits inside the opening that leads to the button. Press and hold the button until the port module LED goes out (about 5 seconds).

    • Issue the following CLI command:

      For more information about the command, see Junos OS System Basics and Services Command Reference at www.juniper.net/documentation/.

  3. Unplug the cable from the cable connector port. If the MIC uses fiber-optic cable, immediately cover each transceiver and the end of each cable with a rubber safety cap.
    Laser 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 a transceiver emit laser light that can damage your eyes.

    CAUTION:

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

Installing an SRX5400 Services Gateway Network Cable

To install a cable in a MIC:

  1. Have ready a length of the type of cable used by the MIC.
  2. If the cable connector port is covered by a rubber safety plug, remove the plug.
    Laser 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 a transceiver emit laser light that can damage your eyes.

    CAUTION:

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

  3. Insert the cable connector into the cable connector port on the faceplate.
    Note:

    The cages and optics on the components are industry standard parts that have limited tactile feedback for insertion of optics and fiber. You need to insert the optics and fiber firmly until the latch is securely in place.

  4. Arrange the cable in the cable manager to prevent it from dislodging or developing stress points. Secure the cable so that it is not supporting its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop. Placing fasteners on the loop helps to maintain its shape.
    CAUTION:

    Avoid bending a 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.

    CAUTION:

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

Replacing SRX5400 Services Gateway Transceivers

Removing an SRX5400 Services Gateway Transceiver

Before you begin to remove a SFP or XFP transceiver:

Ensure that you have the following available:

  • ESD grounding strap

  • Replacement transceiver or transceiver slot plug

  • Antistatic mat

  • Rubber safety cap for the transceiver

  • Needle-nose pliers

Transceivers are installed in a MIC or SPC. Transceivers are hot-insertable and hot-removable. Removing a transceiver does not interrupt the functioning of the card, but the removed transceiver no longer receives or transmits data.

To remove a transceiver (see Figure 4):

  1. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  2. Label the cables connected to the transceiver so that you can reconnect them correctly later.
    Laser 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 a transceiver 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.

  3. Remove the cable connector from the transceiver. Cover the transceiver and the end of each fiber-optic cable connector with a rubber safety cap immediately after disconnecting the fiber-optic cables.
  4. Carefully arrange the disconnected cable in the cable manager to prevent the cable from developing stress points.
    CAUTION:

    Avoid bending a 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.

  5. Using needle-nose pliers, open the ejector lever on the transceiver completely to unlock the transceiver. See Figure 4.
    CAUTION:

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

  6. Grasp the transceiver ejector lever and pull the transceiver approximately 0.5 in. (1.3 cm) out of the port.
  7. Using your fingers, grasp the body of the transceiver and pull it straight out of the port.
    Figure 4: Removing a TransceiverRemoving a Transceiver
      1

    Ejector lever

     
  8. Place a rubber safety cap over the transceiver.
  9. Place the removed transceiver on an antistatic mat or in an electrostatic bag.
  10. If you are not replacing the transceiver, insert transceiver slot plug into the card.
CAUTION:

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

Installing an SRX5400 Services Gateway Transceiver

Transceivers that are installed in an MIC or SPC. Transceivers are hot-insertable and hot-removable. Removing a transceiver does not interrupt the functioning of the card, but the removed transceiver no longer receives or transmits data.

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:

  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. 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.
  8. Verify that the status LEDs on the component faceplate indicate that the transceiver is functioning correctly.