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Upgrading Software for a Virtual Chassis Fabric

This topic describes the processes that can be used to update software on an operational Virtual Chassis Fabric (VCF).

You should update the software on each device before initially interconnecting your VCF. This process describes the options that are available for upgrading software after a VCF is setup.

It contains the following sections:

NSSU

Nonstop software upgrade (NSSU) enables you to upgrade the software running on all member devices in a VCF with minimal network traffic disruption during the upgrade.

See Upgrading Software on a Virtual Chassis Fabric Using Nonstop Software Upgrade.

Automatic Software Update

Automatic software update automatically upgrades the Junos OS running on a device joining a VCF to the version of Junos OS running on the VCF at the moment the new device is cabled into the VCF.

To configure the automatic software update feature for a VCF composed entirely of QFX5100 devices:

[edit]
user@device# set virtual-chassis auto-sw-update package-name package-name

To configure the automatic software update feature on a VCF composed of QFX5100 devices and at least one other type of device:

[edit]
user@device# set virtual-chassis auto-sw-update qfx-5 package-name package-name
user@device# set virtual-chassis auto-sw-update qfx-3 package-name package-name
user@device# set virtual-chassis auto-sw-update ex-4300 package-name package-name

where qfx-5 specifies the path to the Junos OS used to run a QFX5100 devices, qfx-3 specifies the path to the Junos OS used to run QFX3600 and QFX3500 devices, and ex4300 specifies the path to the Junos OS used to run EX4300 switches.

If the software package is located on a local directory on the switch, use the following format for package-name:

/pathname/package-name

If the software package is to be downloaded and installed from a remote location, use one of the following formats:

ftp://hostname/pathname/package-name

ftp://username:prompt@ftp.hostname.net/package-name

http://hostname/pathname/package-name

Standard Upgrade

You can upgrade software on a VCF using the traditional method of upgrading software for Junos OS by logging onto the master Routing Engine and using the request system software add command to initiate the upgrade on a non-mixed VCF or the request system software add set [package-name package-name ...] to initiate the upgrade on a mixed VCF, where package-name is the path to an image for one device family.

When you upgrade Junos OS on a VCF using the traditional software upgrade, each device in the VCF must reboot. The entire system is down until the upgrade process is complete.

For information on performing this procedure, see Upgrading Software on QFX3500, QFX3600, and QFX5100 Switches.

 

Related Documentation

 

Published: 2014-04-29

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