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Maintaining EX4500 Uplink Module

 

The uplink module in EX4500 switches is a hot-removable and hot-insertable field-replaceable unit (FRU): You can remove and replace it without powering off the switch or disrupting switch functions.

You can install up to two SFP+ uplink modules in an EX4500 switch. Both uplink modules install horizontally on the front of the chassis. See Front Panel of an EX4500 Switch.

Before you begin removing an uplink module from the switch:

Ensure that you have the following parts and tools available:

  • Electrostatic discharge (ESD) grounding strap

  • Phillips screwdriver, number 2

  • A replacement uplink module or cover panel

  • An antistatic bag or antistatic mat

Caution

Do not leave the uplink module slot empty for a long time while the switch is operational. Either replace the uplink module promptly or install a cover panel over the empty slot.

To remove an uplink module from the switch (see Figure 1):

  1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. Loosen the captive screws in the ejector levers using the Phillips screwdriver, number 2.
  3. Pull both the ejector levers outward until they are fully open.
  4. Using both hands, gently pull the ejector levers to slide the uplink module halfway out of the chassis.
  5. Using both hands, hold the front edge of the uplink module and slide it completely out of the chassis.
  6. Place the uplink module in an antistatic bag or on an antistatic mat placed on a flat, stable surface.

The uplink module in EX4500 switches is a hot-removable and hot-insertable field-replaceable unit (FRU): You can remove and replace it without powering off the switch or disrupting switch functions.

You can install up to two SFP+ uplink modules in an EX4500 switch. Both uplink modules install horizontally on the front of the chassis. The uplink module slot on the left is PIC 1. The uplink module slot on the right is PIC 2. See Figure 2.

Each SFP+ uplink module provides four ports. Each module can house four 10-gigabit small form-factor pluggable (SFP+) transceivers or four 1-gigabit small form-factor pluggable (SFP) transceivers.

Note

When a new uplink module is installed in the switch or an existing uplink module is replaced with another uplink module, the switch detects the newly installed uplink module. The switch creates the required interfaces when new transceivers are installed in those ports.

Before you begin installing an uplink 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:

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

  • Phillips (+) screwdriver, number 2

To install an uplink module in an EX4500 switch (see Figure 3):

  1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.

    If a grounding strap is not available, hold the uplink 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 uplink module slot has a cover panel on it, pull one of the ejector levers on the cover panel inward, to unseat the cover panel. Use this ejector lever to slide the cover panel out. Save the cover panel for later use.
  3. Taking care not to touch module components, pins, leads, or solder connections, remove the uplink module from its bag.
  4. Loosen the captive screws in the ejector levers using the Phillips screwdriver, number 2. Pull the ejector levers outward until they are fully open. Note

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

    Caution

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

  5. Using both hands, place the uplink module in the empty slot and slide it in gently until it is fully seated.
  6. Push both ejector levers towards the uplink module’s faceplate to latch the module in place.
  7. Tighten the captive screws in both ejector levers using the Phillips screwdriver, number 2. When the ST LED turns green, the uplink module is ready for use.
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.