Juniper QFX Series User Manual

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Hostname: qfabric
Model: QFX3108
JUNOS Base OS boot [11.3X30.6]
JUNOS Base OS Software Suite [11.3X30.6]
JUNOS Kernel Software Suite [11.3X30.6]
JUNOS Crypto Software Suite [11.3X30.6]
JUNOS Online Documentation [11.3X30.6]
JUNOS Enterprise Software Suite [11.3X30.6]
JUNOS Packet Forwarding Engine Support (QFX RE) [11.3X30.6]
JUNOS Routing Software Suite [11.3X30.6]
warning: from interconnectdevice0: Disconnected
Related
Documentation
Configuring the QFabric System Initial Setup on a QFX3100 Director Group on page 287•
• Upgrading Software on a QFX3000 QFabric Switch
• request system software configuration-backup
• request system software configuration-restore
Performing a Recovery Installation of the Director Group
If Junos OS on your Director group is damaged in some way that prevents the software
from loading correctly, you may need to perform a recovery installation using an
emergency boot device (external USB flash drive) to restore the default factory
installation. Once you have recovered the software, you need to restore the Director
group configuration. You can either create a new configuration as you did when the
Director group was shipped from the factory, or if you saved the previous configuration,
you can simply restore that file to the Director group.
You can reinstall Junos OS with or without access to the QFabric system default partition.
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This procedure describes how to boot and reinstall Junos OS on a Director group with
no access to the QFabric system default partition.
1. Ensure that you have an emergency boot device (external USB device) with Junos OS
installed to use during the installation.
2. Insert the external USB device in the USB port.
A menu like the following appears once you are connected to the Director group:
Juniper Networks QFabric Director Install/Recovery Media
- To boot from the USB device, wait 10 seconds or press the <ENTER> key.
- To reinstall the QFabric software on this Director device, type: install
and then press the <ENTER> key.
- To perform a network installation on this Director device, type: network
<ENTER>
3. To reinstall the software on the Director group, type install and then press Enter.
The Director group copies the software from the external USB device, occasionally
displaying status messages. Copying the software can take up to 10 minutes.
Copyright © 2012, Juniper Networks, Inc.420
QFX3000 Hardware Documentation

Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)