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Back to Table of Contents 

Back to Upgrading SBC Application Software

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The SBC application revert from

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this release to the previous version is performed using the SBC EMA

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with the following prerequisites:

  • The firmware is not reverted back to an earlier version because it is backward compatible with earlier
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    versions.
  • Any configurations performed after the upgrade will be lost after the Revert. Once the revert completes, the configuration rolls back to the time stamp in the 'Last Used' field.

  • Once a revert is performed to a valid pre-

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  • 6.0 SBC release, an upgrade to another pre-

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  • 6.0 release is not supported. Upgrading to any other pre-

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Note

Firmware is not reverted back to earlier version as it is backward compatible with earlier SBC version.

Note

All configurations performed after the upgrade will be lost on initiating the Revert. When the revert is complete, the configuration will rollback to the timeline mentioned in 'Last Used' field.

  • Only the systems upgraded (offline or LSWU) can be reverted. The system can not be reverted to an older version when the server/system is ISOed or the SBC software is installed.
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This procedure is service impacting.

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The Revert

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procedure is not supported on

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the

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or
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The images depicted here are only for examples and does not indicate the latest build. To know more about the latest build information, refer to Production Releases

The following procedure describes the 

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application revert using the EMA:

  1. Launch the EMA

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  1. (from either the active or standby server). Refer to Logging into EMA in Platform Mode for guidance.

Note

You may launch the EMA in either the active or standby server.

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1Logging On to EMA Platform

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  1.  

  2. Navigate to

  1. Monitoring > Dashboard > System and Software Info to verify the versions.
    (An example screenshot is shown below. Your actual software version may vary).

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    1New Application and OS Version

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  2. Navigate to Administration > System Administration screen.

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    1System Administration Screen

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  3. Click Revert Software Version.
    The Revert Software Version screen is

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  1. displayed displaying the system or partition for the current version and the older version.
    (An example screenshot is shown below. Your actual software version may vary).

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    0Figure
    1Revert Software Screen

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  2. Click

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  1. Image Modified to start the revert.
  2. A confirmation message appears on the screen informing you this action will change the boot software version to the previous release, plus warn you that this is a service-impacting action. Click Ok to proceed.

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  1. Note

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1Confirmation of Revert Operation

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  1. titleCaution

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  1. The Revert Software application simultaneously reverts both the Active

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  1. and Standby

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  1. server.

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  1. Continuing the revert will reboot the upgraded server(s)

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  1. to an earlier release. During this process, the browser session

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  1. is lost necessitating logging back into the session.


    The Revert Software starts and changes the boot version to earlier version in both the active and standby server. For example, in this case, it is

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  1. 06.02.

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  1. 00R000 version. You can see the revert status in the Log section.

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    1Revert Logs

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    Caption
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    1Continuing Revert Operation

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  2. Once you see Rebooting message in the logs, log out from the EMA.

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    1Rebooting SBC Platform

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Info

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titleNote

The revert operation takes

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approximately 15 to 20 minutes to complete.

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Launch the Platform Manager using the default credentials.

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Beginning with 5.0 release, the Platform Manager is integrated into the EMA and hereafter referred to as EMA Platform Mode. So once it is reverted back to 3.x/4.x release, you may only use Platform Manager tool for further upgrades.

Verify the revert software versions in Platform > Software Versions.

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1Active Server Revert Status

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1Standby Server Revert Status

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The roles of Active and Standby server may interchange depends upon the server, which is booting first. In this case, WFDSBC01b completed the rebooting first and became active.

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