Juniper QFabric QFX3000-G Hardware Documentation page 615

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Adding or Replacing a QFX3100 Director Device in a QFabric System

The power supplies in a QFX3008-I Interconnect device continue to

use a small amount of power when the C19 wiring tray power switch is in the

off position. The status LEDs on each power supply blink amber because the

power supply fans are not operating. This is expected behavior.

Connecting AC Power to a QFX3008-I Interconnect Device with Single-Phase Wiring

Trays on page 411

Connecting AC Power to a QFX3008-I Interconnect Device with Three-Phase Delta

Wiring Trays on page 418

Connecting AC Power to a QFX3008-I Interconnect Device with Three-Phase Wye

Wiring Trays on page 422

The Director group in a QFabric system automatically recognizes when devices are added

or replaced in the QFabric system. The Director group sends each device its own portion

of the Junos OS configuration and adds them to the QFabric system inventory.

Before you replace a QFX3100 Director device in a QFabric system:

Ensure that you have taken the necessary precautions to prevent electrostatic discharge

(ESD) damage. See

"Prevention of Electrostatic Discharge Damage" on page

If possible, install the replacement QFX3100 Director device and connect it to power

to minimize the amount of time it takes to replace the device.

Ensure that you have the following parts and tools available to replace 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

A 4-gigabyte (GB) USB flash drive

Powering Off and Removing the Old QFX3100 Director Device on page 566

Update the New QFX3100 Director Device Software on page 566

Adding the New QFX3100 Director Device to the QFabric System on page 567

Chapter 39: Removing or Replacing a Device

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