Juniper QFX3000-G QFabric, Deployment Manual, Page: 73 / 652

1.
The QFabric system copies the new software to the backup Node device, then the
master Node device.
2.
The QFabric system validates and then installs the new software on the backup
Node device, then the master Node device.
3.
The backup Node device reboots, comes back online, and becomes the master
Node device.
4.
The previous master Node device reboots and comes back online as a backup Node
device.
NOTE: For redundant server Node groups, both Node devices must be
online before the upgrade will proceed. If one of the devices is no longer
available, remove the Node device from the Node group configuration
before you issue the nonstop software upgrade command.
The key actions that occur during a server Node group upgrade for a Node group that
contains one member are:
1.
The Node device downloads the software package and validates the software.
2.
The Node device installs the software and reboots.
NOTE: Because there is no redundancy for Node groups containing a single
Node device, traffic loss occurs when the device reboots during the upgrade.
Related
Documentation
Performing a Nonstop Software Upgrade on the QFabric System on page 445
•
•
Verifying Nonstop Software Upgrade for QFabric Systems on page 450
•
request system software nonstop-upgrade on page 501
•
request system software add
•
Configuring Graceful Restart for QFabric Systems on page 401
Understanding Statements and Commands on the QFabric System
Supported Platforms
QFabric System
•
Chassis Statements on page 47
• Chassis Commands on page 48
Chassis Statements
The following chassis statements enable you to configure various options for your
Interconnect devices, Node groups (network and server), and Node devices:
• interconnect-device
47 Copyright © 2015, Juniper Networks, Inc.
Chapter 4: Software Features