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Installing an Uplink Module in an EX4200 Switch

If your EX4200 switch includes an optional uplink module, you install it in the switch's front panel. The different types of uplink modules are described in Uplink Modules Connector Pinout Information for EX4200 Switches.

The uplink module in EX4200 switches is a hot-removable and hot-insertable unit (FRU): You can remove and replace it without powering off the switch.

Note: The packet forwarding process (pfem) restarts and causes traffic loss, if you:

  • Install an uplink module (SFP, SFP+, SFP+ MACsec, or XFP)
  • Replace an existing uplink module with another uplink module
  • Change the operating mode of an SFP+ or SFP+ MACsec uplink module (10-gigabit to 1-gigabit or 1-gigabit to 10-gigabit) installed in the switch

Note: If you have set an uplink module port as a Virtual Chassis port (VCP), removing the uplink module breaks the setting. You must reset the port as a VCP after you replace the module. See Setting an Uplink Port on an EX Series Switch as a Virtual Chassis Port (CLI Procedure).

Before you begin installing an uplink module in the switch:

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.)
  • Cross-head screwdriver (provided in the uplink module kit)

To install an uplink module in 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.

    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. Loosen the screws that secure the flip-up door covering the empty uplink module slot on the front panel of the switch by using the cross-head screwdriver, flip the door upward, and remove the blanking panel covering the empty uplink module slot.

    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.

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

    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.

  4. Using both hands, place the module in the empty slot and slide it in gently until it is fully seated.
  5. Flip the door down and tighten the screws by using the cross-head screwdriver.

Note: If the switch does not detect the uplink module, see Troubleshooting Virtual Chassis Port Connectivity on an EX4200 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/csc/management/updateinstallbase.jsp . Failure to do so can result in significant delays if you need replacement parts. This note applies if you change the type of power supply or add a new type of uplink module. It does not apply if you replace these components with the same type of component.

Published: 2014-12-04