Juniper QFX3500, Hardware Documentation

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Before you begin installing an expansion module in the switch, ensure that you have taken the necessary
precautions to prevent electrostatic discharge (ESD) damage (see “Prevention of Electrostatic Discharge
Damage” on page 242 ).
Ensure that you have the following parts and tools available:
•
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 expansion module in a QFX5100-24Q or a QFX5100-24Q-AA device (see
Figure 148 on page 437 and Figure 149 on page 437 ):
1. Attach the 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 expansion module in its antistatic bag in one hand and
touch the exposed metallic part of the switch with the other hand to ground yourself and the component.
2. If the module slot has a cover panel on it, remove the cover panel by using the screwdriver and save
it for later use.
3. Taking care not to touch module components, pins, leads, or solder connections, remove the expansion
module from its bag.
4. Loosen the captive screws on the front faceplate of the expansion module by using your fingers. If you
are unable to loosen the captive screws by using your fingers, use the screwdriver.
5. Using both hands, place the expansion module in the empty slot and slide it in gently until it is fully
seated.
NOTE: After you have removed an expansion module, wait for at least 5 seconds before you
install an expansion module. If you do not wait for at least 5 seconds, the interfaces on the
expansion module might not come up.
6. Raise the handle and tighten the captive screws by using your fingers or the screwdriver. For the
QFX5100-24Q-AA, retract the ejector handles and tighten the captive screws by using your fingers or
the screwdriver (see Figure 149 on page 437 ). When the ST LED turns green, the expansion module is
ready for use.
Figure 148 on page 437 shows how to install a QSFP+ expansion module on the port panel of a
QFX5100-24Q device.
436