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Power Off a QFX5240 Switch

Before you remove the power cord to power off a QFX5240 switch:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage. See Prevention of Electrostatic Discharge Damage.

  • Ensure that you do not need to forward traffic through the 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 a QFX5240 switch:

  1. Connect to the switch using one of the following methods:
  2. Shut down Junos OS from the external management device.

    For QFX5240 systems:

    1. Issue the request system shutdown power-off 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.

      On Junos OS Evolved systems, you see the following output:

    CAUTION:

    Wait at least 60 seconds after first seeing the final 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.

  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.

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