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Removing the EX4500 Switch


Powering Off an EX4500 Switch

If you need to power off the EX4500 switch, follow the procedure in this topic.

Before you power off the switch:

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

  • An electrostatic discharge (ESD) grounding strap

  • An external management device such as a PC

  • A cable to connect the external management device to the console port (CON) or management port (MGMT) on the switch

To power off the switch:

  1. Connect the management device (such as a PC) to the console (CON) port or the management (MGMT) port on the switch:
  2. From the PC connected to the switch, issue the following operational mode CLI command:

    user@switch> request system halt

    This command shuts down the switch gracefully and preserves system state information. A message displays on the console confirming that the operating system has halted.


    The final output of any version of this command is the “The operating system has halted. Please press any key to reboot” message. Wait at least 60 seconds after first seeing this message before following the instructions in Steps 3 and 4 to power off the switch.


    If you have only one power supply in your switch, ensure that you have halted your system safely before turning off the power supply.

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

    For AC power supplies:

    • If the AC power source outlet has a power switch. set it to the OFF 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.

    For DC power supplies:

    • Make sure that the voltage across the DC power source cable leads is 0 V and that the cables do not become active.

  5. Observe the power supply LEDs and verify that the power supply LEDs turn off (appear unlit).
  6. Repeat Steps 4 and 5 for all installed power supplies.

Removing an EX4500 Switch from a Rack or Cabinet

If you need to relocate an installed EX4500 switch, use the procedure described in this topic. (The remainder of this topic uses “rack” to mean “rack or cabinet.” )


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


At least two people must be available to lift a switch chassis out of a rack—one person to unscrew the mounting screws from the brackets and the second person to hold the chassis.

Before removing the switch from a rack:

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

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

  • Read General Safety Guidelines and Warnings, with particular attention to Chassis and Component Lifting Guidelines.

  • Ensure that the switch has been safely powered off and that you have unplugged (disconnected) the power cords.

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

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

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

  • A labeled bag to hold the removed screws.

To remove an EX4500 switch from a rack:

  1. Use the appropriate Phillips (+) screwdriver to remove the mounting screws that attach the chassis front-mounting brackets to the rack.
  2. Place the removed screws in a labeled bag. You will need them when you reinstall the chassis.
  3. Lift the chassis from the rack and carefully move the chassis to its new location.