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Powering Off a QFX3500 Device

Before you power off a QFX3500 device:

Note:

Use the following procedure to turn off power on a QFX3500 device that is in standalone mode, a member in a QFX Virtual Chassis, or a spine device in a Virtual Chassis Fabric. QFX3500 devices that are Node devices in a QFabric system running OS Junos release 14.1 or later must use a different procedure and CLI to ensure there is no traffic loss. See Powering Off an Existing QFabric Node Device.

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

  • 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 QFX3500 device:

  1. Connect to the device using one of the following methods:

    • Connect a management device to the console (CON) port on a QFX3500 device. For instructions about connecting a management device to the console (CON) port, see Connecting a QFX Series Device to a Management Console.

    • If you are using the QFX3500 device as a standalone switch, you can shut down the QFX3500 device from a management device on your out-of-band management network. For instructions about connecting a management device to the management (CO or C1) port, see Connect a Device to a Network for Out-of-Band Management.

    • Shut down the QFX3500 device from a management device connected through the QFX3100 Director device in a QFabric system. See request component login for information about gaining access to individual devices in your QFabric system.

  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 device 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. Please press any key to reboot” message. Wait at least 60 seconds after first seeing this message before following the instructions in Step 4 and Step 5 to remove power from device.

  3. Attach the grounding strap to your bare wrist and to a site ESD point.
  4. Disconnect power to the device 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.

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