Dell SmartFabric OS10 Installation, Upgrade, and Downgrade Guide

Downgrade to OS10 release 10.5.0.9 or earlier

In this example, the OS10 switch runs the 10.5.1.0 software and the following procedure downgrades the system to Release 10.5.0.9.

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 the 10.5.0.9 or earlier image.

1. Back up the current running configuration to an external storage.

   OS10# copy running-configuration scp://userid:passwd@hostip/filepath/10.5.2.0-running-configuration.txt

2. Back up the startup configuration (startup.xml) to an external storage.

   OS10# write memory
   OS10# copy config://startup.xml scp://userid:passwd@hostip/filepath/10.5.2.0-startup.xml

3. Download the OS10 binary image for Release 10.5.0.9 from a local server using the image download server-filepath/filename command in EXEC mode; for example:

   OS10# image download scp://admin:passwd@10.1.1.1/home/admin/images/OS10EE.bin

4. (Optional) View the current software download status in EXEC mode.

   OS10# show image status

5. Install the OS10 standby image using the image install file-url command in EXEC mode, where filename is the name of the image file that was downloaded with the image download command; for example:

   OS10# image install image://OS10EE.bin

6. (Optional) View the status of the software installation in EXEC mode.

   OS10# show image status 
   Image Upgrade State:     idle
   ==================================================
   File Transfer State:     transfer-success
   --------------------------------------------------
     State Detail:          Completed: No error
     Task Start:            2019-11-19T06:55:44Z
     Task End:              2019-11-19T06:55:53Z
     Transfer Progress:     100 %
     Transfer Bytes:        469343880 bytes
     File Size:             469343880 bytes
     Transfer Rate:         67812 kbps
    
   Installation State:      install-failed
   --------------------------------------------------
     State Detail:          Failed: Downgrade image staged for clean install. Reload to downgrade.
     Task Start:            2019-11-19T06:55:53Z
     Task End:              2019-11-19T06:56:01Z

   NOTE:

   • During this stage, the show boot detail command displays the details of the previous image that was installed. The boot system active | standby command is not applicable during this state.
   • If you install a new image using the image install command, the current staging image is replaced with the new image that you have installed and you cannot downgrade to the previous version.
7. Reload the new software image in EXEC mode. This command performs a fresh installation of Release 10.5.0.9. Release 10.5.0.9 is installed as both the active and standby images.

   OS10# reload

8. Use the show version command in EXEC mode to verify that the downloaded OS10 image is installed as the current running version.

   OS10# show version
   Dell EMC Networking OS10 Enterprise
   Copyright (c) 1999-2019 by Dell Inc. All Rights Reserved.
   OS Version: 10.5.0.9
   Build Version: 10.5.0.270
   Build Time: 2019-07-29T23:35:01+0000
   System Type: S4148F-ON
   Architecture: x86_64
   Up Time: 1 day 00:54:13

9. If the saved configuration from Release 10.5.0.9 (or the earlier release that you are downgrading to) is available, apply the saved configuration and license files, and reload the switch.

   OS10# copy scp://userid:passwd@hostip/filepath/10.5.0.9-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 nondefault 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. If you have a nondefault 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.
10. If the saved configuration file from Release 10.5.0.9 (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 scp://userid:passwd@hostip/filepath/backup-running-configuration.txt running-configuration
    OS10# write memory
    OS10# reload