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Maintaining EX4550 Virtual Chassis Module

 

Removing a Virtual Chassis Module from an EX4550 Switch

The Virtual Chassis module in EX4550 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. The Virtual Chassis module is installed in the module slots on the front panel and the rear panel of an EX4550 switch chassis.

Use the procedure described in this topic to remove the module from the switch chassis.

Before you begin removing the Virtual Chassis module from the switch:

Ensure that you have the following parts and tools available:

  • ESD grounding strap

  • Phillips screwdriver, number 2

  • A replacement optional module or cover panel

  • An antistatic bag or antistatic mat

To remove the Virtual Chassis module from the switch (see Figure 1):

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. Unscrew both captive screws on the faceplate of the Virtual Chassis module by using your fingers. If you are unable to unscrew the captive screws by using your fingers, use the screwdriver.
  3. Hold both the captive screws and gently pull the Virtual Chassis module out of the module slot.
  4. Place the Virtual Chassis module in an antistatic bag or on an antistatic mat placed on a flat, stable surface.
  5. If you are not replacing the Virtual Chassis module with an optional module, install the cover panel over the slot.

Figure 1: Removing the Virtual Chassis Module from an EX4550 Switch
Removing
the Virtual Chassis Module from an EX4550 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.

Installing a Virtual Chassis Module in an EX4550 Switch

You can install the Virtual Chassis module in either of the two module slots; one each on the front panel and the rear panel of the switch. Use the procedure described in this topic to install the Virtual Chassis module.

Before you begin installing the Virtual Chassis module in the switch:

Ensure that you have the following parts and tools available:

  • ESD grounding strap

  • Phillips (+) screwdriver, number 2

To install a Virtual Chassis module in the switch (see Figure 2):

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. Taking care not to touch module components, pins, leads, or solder connections, remove the Virtual Chassis module from its bag.
  3. If the module slot has a cover panel on it, remove the cover panel by using the screwdriver and save it for later use.
  4. Loosen the captive screws on the front faceplate of the Virtual Chassis 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 Virtual Chassis module in the empty slot and slide it in until it is fully seated.Caution

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

  6. Tighten the captive screws by using your fingers or the screwdriver.
  7. Connect power to the switch. See Connecting AC Power to an EX4550 Switch or Connecting DC Power to an EX4550 Switch.

When the status (ST) LED on the Virtual Chassis module turns green, the module is ready for use.

Figure 2: Installing the Virtual Chassis Module in an EX4550 Switch
Installing
the Virtual Chassis Module in an EX4550 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.