Dell SmartFabric OS10 User Guide Release 10.5.3

Downgrade to Release 10.5.1.0 or later releases

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.

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

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

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

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

5. Download the OS10 binary image for Release 10.5.1.0, also called the standby image, from a local server using the image download server-filepath/filename command in EXEC mode; for example:

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

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

   OS10# show image status

7. 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 in Step 5 with the image download command; for example:

   OS10# image install image://OS10EE.bin

8. (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-success
   --------------------------------------------------
     State Detail:          Completed: Success
     Task Start:            2019-11-19T06:55:53Z
     Task End:              2019-11-19T06:56:01Z

9. Use the show boot detail to view the standby image. Change the next boot image to standby image in EXEC mode. Reload the device. The device comes up with 10.5.1.x software image.

   OS10# show boot detail

   OS10# boot system standby

   OS10# reload

10. 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: 10.5.1.0
    Build Version: 10.5.1.0.124
    Build Time: 2020-02-12T02:34:02Z
    System Type: S4148F-ON
    Architecture: x86_64
    Up Time: 1 day 00:54:13

11. If the saved configuration from Release 10.5.1.0 (or the later release to which you are downgrading to) is available, apply the saved configuration and license files, and reload the switch.

    OS10# copy ftp://userid:passwd@hostip/filepath/10.5.1.0-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.
12. If the saved configuration file from Release 10.5.1.0 (or the later release) that you are downgrading to is not available, apply the backup text configuration (.txt) taken in Step 3. Ensure that the backup configuration text file does not have any unsupported commands (commands that are introduced in later releases). If unsupported commands are present in the text file, the system errors out. You might have to reload the switch, if any of the configurations require a reload.

    OS10# copy ftp://userid:passwd@hostip/filepath/backup-running-configuration.txt running-configuration
    OS10# write memory
    OS10# reload