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Maintain the EX4400 Extension Modules

Remove an Extension Module from an EX4400 Switch

Before you remove an extension module from an EX4400 switch:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • If there are any transceivers installed in the extension module, remove them before you remove the extension module. For instructions on removing transceivers, see Maintain Transceivers.

  • Ensure that you have the following parts and tools available:

    • Number 2 Phillips (+) screwdriver—not provided

    • An antistatic bag or an antistatic mat—not provided

    • An ESD grounding strap—not provided

    • A replacement extension module or cover for the empty extension module slot

The extension module in EX4400 switches is a hot-removable and hot-insertable field-replaceable unit (FRU). You can remove and replace an extension module without powering off the switch or disrupting switch functions.

CAUTION:

We recommend that you install either a replacement extension module or a cover over the empty module slot to reduce the risk of objects or substances entering the chassis and to ensure optimal cooling of the switch.

To remove an extension module:

  1. Take the extension module offline by issuing the following CLI command:
  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. Loosen both captive screws on the faceplate of the extension module by using your fingers. If you are unable to unscrew the captive screws by using your fingers, use the screwdriver.
    CAUTION:

    Do not pull the extension module out of the module slot by holding the faceplate of the extension module.

  4. Hold both the ejector handles or the captive screws on the extension module and gently pull the extension module toward you and out of the module slot (see Figure 1, Figure 2, and Figure 3).
    Figure 1: Remove a 1x100GbE QSFP28 Extension Module from the EX4400 Switch Remove a 1x100GbE QSFP28 Extension Module from the EX4400 Switch
    Figure 2: Remove a 4x10GbE SFP+ Extension Module from the EX4400 Switch Remove a 4x10GbE SFP+ Extension Module from the EX4400 Switch
    Figure 3: Remove a 4x25GbE SFP28 Extension Module from the EX4400 Switch Remove a 4x25GbE SFP28 Extension Module from the EX4400 Switch
  5. Place the extension module in an antistatic bag or on an antistatic mat placed on a flat, stable surface.
  6. If you are not replacing the extension module, install the cover over the empty slot.
    Note:

    After you have removed an extension module, wait for at least 10 seconds before you install an extension module. If you do not wait for at least 10 seconds, the interfaces on the extension module might not come up.

Install an Extension Module in an EX4400 Switch

Before you begin installing an extension module in the switch:

  • Ensure that you have taken the necessary precautions to prevent ESD damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that you have the following parts and tools available:

    • Number 2 Phillips (+) screwdriver—not provided

    • An ESD grounding strap—not provided (If a grounding strap is not available, follow the alternative grounding method described in Step 1 of the following procedure.)

You can install an extension module in the front panel of an EX4400 switch. The extension module in EX4400 switches is a hot-removable and hot-insertable unit (FRU). You can remove and replace an extension module without powering off the switch.

Note:

Extension modules are not part of the shipping configuration. If you want to purchase them, you must order them separately and register them (see Register Products—Mandatory to Validate SLAs).

To install an extension module:

  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.

    If a grounding strap is not available, hold the extension module in its antistatic bag in one hand and touch the exposed, bare metal of the switch with the other hand to ground yourself and the component.

  2. If the extension module slot has a cover on it, loosen both the screws on the cover by using your fingers. If you are unable to unscrew the screws by using your fingers, use the screwdriver. Hold both the screws and gently pull the cover outward, and save it for later use.
    Note:

    If you are removing an extension module and installing another extension module, wait for at least 10 seconds after removing the extension module before installing the new or the same extension module. If you do not wait for at least 10 seconds, the interfaces on the extension module might not come up.

  3. Taking care not to touch module components, pins, leads, or solder connections, remove the extension module from its bag.
    CAUTION:

    Before you slide the extension module into the slot on the switch chassis, ensure the extension module is aligned correctly. Misalignment might cause the pins to bend, making the extension module unusable.

  4. Using both hands, place the module in the empty slot and slide it in gently until it is fully seated.
  5. Tighten both the captive screws by using your fingers or the screwdriver (see Figure 4, Figure 5, and Figure 6).
    Figure 4: Install a 1x100GbE QSFP28 Extension Module in the EX4400 Switch Install a 1x100GbE QSFP28 Extension Module in the EX4400 Switch
    Figure 5: Install a 4x10GbE SFP+ Extension Module in the EX4400 Switch Install a 4x10GbE SFP+ Extension Module in the EX4400 Switch
    Figure 6: Install a 4x25GbE SFP28 Extension Module in the EX4400 Switch Install a 4x25GbE SFP28 Extension Module in the EX4400 Switch
Note:

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.