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Removing the EX4600 Switch

 

Installing and Removing EX4600 Switch Hardware Components

The EX4600 switch chassis is a rigid sheet-metal structure that houses the hardware components. The field-replaceable units (FRUs) in EX4600 switches are:

  • Power supply

  • Fan module

  • Expansion modules

  • SFP+ transceiver

  • QSFP+ transceiver

All of the EX4600 switch FRUs are hot-insertable and hot-removable: you can remove and replace them without powering off the switch or disrupting switch functions.

Caution

Replace a failed power supply with a new power supply within 1 minute of removal to prevent chassis overheating. Replace a failed fan module with a new fan within 1 minute of removal to prevent chassis overheating.

To install a power supply in a EX4600 switch, follow the instructions in Installing a Power Supply in an EX4600 Switch. To remove a power supply from a EX4600 switch, follow the instructions in Removing a Power Supply from an EX4600 Switch.

To install a fan module in a EX4600 switch, follow the instructions in Installing a Fan Module in an EX4600 Switch. To remove a fan module from a EX4600 switch, follow the instructions in Removing a Fan Module from an EX4600 Switch.

To install an SFP+ or QSFP+ transceiver in an EX4600 switch, follow the instructions in Install a Transceiver. To remove an SFP+ or QSFP+ transceiver from an EX4600 switch, follow the instructions in Remove a Transceiver.

To connect a fiber-optic cable to an SFP+ or QSFP+ transceiver in an EX4600 switch, follow the instructions in Connect a Fiber-Optic Cable. To disconnect a fiber-optic cable from an SFP+ or QSFP+ transceiver from an EX4600 switch, follow the instructions in Disconnect a Fiber-Optic Cable.

Powering Off an EX4600 Switch

Before you power off an EX4600 switch:

Ensure that you have the following parts and tools available to power off the switch:

  • An ESD grounding strap

  • An external management device such as a PC

  • An RJ-45 to DB-9 rollover cable to connect the external management device to the console port

To power off an EX4600 switch:

  1. Connect to the switch using one of the following methods:
  2. Shut down Junos OS from the external management device by issuing the request system halt operational mode CLI command. This command shuts down the switch gracefully and preserves system state information. A message appears on the console, confirming that the operating system has halted.

    You see the following output (or something similar, depending on the hardware being shut down) after entering the command:

    Caution

    The final output of any version of the request system halt command is the “The operating system has halted.” Wait at least 60 seconds after first seeing this message before following the instructions in Step 4 and Step 5 to power off the switch.

  3. Attach the grounding strap to your bare wrist and to a site ESD point.
  4. Disconnect power to the switch by performing one of the following tasks:

    • AC power supply—If the AC power source outlet has a power switch, set it to the OFF (O) position. If the AC power source outlet does not have a power switch, gently pull out the plug end of the power cord connected to the power source outlet.

    • DC power supply—Switch the circuit breaker on the panel board that services the DC circuit to the OFF position.

  5. Remove the power source cable from the power supply faceplate:

    • AC power supply—Remove the power cord from the power supply faceplate by detaching the power cord retainer and gently pulling out the socket end of the power cord connected to the power supply faceplate.

    • DC power supply—Remove the screws securing the ring lugs attached to the power source cables to the power supply using the screwdriver, and remove the power source cables from the power supply. Replace the screws on the terminals and tighten them.

  6. Uncable the switch before removing it from the rack or cabinet.

Removing an EX4600 Switch from a Rack or Cabinet

If you need to relocate an installed EX4600 switch, use the procedure described in this topic. (The remainder of this topic uses “rack” to mean “rack or cabinet.” )

Note

When you remove multiple devices from a rack, remove the device in the top of the rack first and proceed to remove the rest of the devices from top to bottom.

Before removing an EX4600 switch from a rack:

  • Ensure that the rack is stable and secured to the building.

  • Ensure that there is enough space to place the removed EX4600 switch in its new location and along the path to the new location.

  • Read General Safety Guidelines and Warnings.

  • Ensure that the EX4600 switch has been safely powered off (see Powering Off an EX4600 Switch) and that you have unplugged (disconnected) the power cords.

  • Ensure that you have disconnected any cables or wires attached to the EX4600 switch ports.

Ensure that you have the following parts and tools available:

  • A Phillips (+) screwdriver, number 2 or number 3, depending on the size of your rack mounting screws, for mounting the EX4600 switch on the rack.

To remove a EX4600 switch from a rack or cabinet:

  1. Have one person support the weight of the switch while another person uses the screwdriver to remove the front mounting screws that attach the chassis mounting brackets to the rack or cabinet.
  2. Remove the EX4600 switch from the rack or cabinet.
  3. Use the screwdriver to remove the mounting screws that attach the mounting blades attached to the rear of the rack or cabinet.
  4. Place the removed screws and mounting blades in a labeled bag. You will need them when you reinstall the chassis.
  5. Transport the EX4600 switch to your desired new location.