Users Guide

11. If the saved configuration from Release 10.5.0.0 (or the earlier release that you are downgrading to) is available, apply the
saved configuration and license files, and reload the switch.
OS10# copy ftp://userid:passwd@hostip/filepath/10.5.0.0-startup.xml config://
startup.xml
OS10# license install scp://user:passwd@hostip/0A900Q2-NOSEnterprise-License.xml
OS10# reload
NOTE: While reloading, if the CLI prompts to save, select no for the save option. Selecting yes overrides the
configuration that was copied earlier.
NOTE: If you have made any non-default hardware settings before the downgrade, after you downgrade and restore
the configuration, use the show hardware command to check if your settings are applied. If not, save and reload the
box for the settings to be applied.
On the S4100-ON Series switches, if you have a non-default switch port profile configured, this setting might not be
applied. Apply the switch port profile configuration first, save the configuration, and then restore the configuration file.
12. If the saved configuration file from Release 10.5.0.0 (or the earlier release) that you are downgrading to is not available,
apply the backup text configuration (.txt) that was obtained earlier. Ensure that the backup configuration text file does not
have unsupported commands (commands that are introduced in later releases). If unsupported commands are present in the
text file, the system reports an error. If any of the configurations require a reload, you might have to reload the switch.
OS10# copy ftp://userid:passwd@hostip/filepath/backup-running-configuration.txt
running-configuration
OS10# write memory
OS10# reload
Restrictions for downgrading OS10 from 10.5.1.x or later to 10.5.0.x or earlier version
After downgrade to release 10.5.0.x or an earlier release, the following images are available on the switch:
● Image A: 10.5.0.x or earlier (active)
● Image B: N/A
During this state, you must not use the boot system standby command and reload as the switch might get stuck in the
GRUB shell.
Downgrade to OS10 release 10.5.1.0 or later
In this example, the OS10 switch runs the 10.5.2.0 software and the following procedure downgrades the system to Release
10.5.1.0.
NOTE:
● If the version that you are downgrading to is present in the system as the standby image, you can rollback to that
release without losing configuration or license data. To view the standby image version, use the show boot detail
command. For more information, see the Rollback from OS10 release 10.5.2.0 or later to 10.5.1.0 or later section.
● If the image that you are downgrading to is newly installed using the image install command, backup of the
original configuration data will not be available. The system boots with the default configuration. If you have a copy
of the backup configuration file (.xml) obtained from the earlier release that you are downgrading to, apply the saved
configuration and license files as described in the following procedure. Ensure that you back up the configuration data to
an external storage even when you downgrade from a later version to an earlier version within the same release series.
For example, when you downgrade from Release 10.5.2.2 to Release 10.5.2.0.
Prerequisites
Obtain a backup of the configuration data. Ensure that you have a copy of the license files. Reapply the configuration data and
licenses files after you reload to 10.5.1.x.
1. Upgrade the ONIE to the latest version on the switch that is being downgraded.
2. Upgrade the Firmware to the latest version on the switch that is being downgraded.
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Downgrading OS10 software