Juniper QFabric QFX3000-G Hardware Documentation page 891

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Performing a QFabric System Recovery Installation on the Director Group
Copyright © 2018, Juniper Networks, Inc.
Remove the emergency boot device when prompted and then press Enter. The device
7.
then reboots from the internal flash storage on which the software was just installed.
When the reboot is complete, the device displays the login prompt.
Create a new configuration as you did when the device was shipped from the factory,
8.
or restore the previously saved configuration file to the device.
Release Description
14.1 Starting in Junos OS Release 14.1, you can also use a system snapshot as a
bootup option when your Junos OS or configuration is damaged.
Creating an Emergency Boot Device for QFX Series Switches on page 837
If the software on your QFabric system is damaged in some way that prevents the software
from loading correctly, or you need to upgrade the software on your QFabric system, you
may need to perform a recovery installation on the Director group.
If possible, perform the following steps before you perform the recovery installation:
Ensure that you have an emergency boot device (for example, an external USB flash
1.
drive) for each of your Director devices to use during the recovery installation.
You can either use the external USB flash drive containing the software supplied by
Juniper Networks, or you can use an external USB flash drive supplied by Juniper
Networks on which you install the QFabric system install media.
Because the recovery installation process completely overwrites the entire contents
2.
of the Director device, make sure you back up any configuration files and initial setup
information on a different external USB flash drive before you begin a recovery
installation. You will need to restore this information as part of recovery process.
Use the request system software configuration-backup
configuration files and initial setup information:
user@switch> request system software configuration-backup path
Chapter 56: Restoring Junos OS
command to back up your
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