Product Documentation

Partial software upgrade using local change management

Important

By default, the Partial Software Upgrade option is disabled.

You can install a newer SD-WAN software release version on a subset of client sites using the Local Change Management option. This is achieved through the partial software upgrade feature which allows the network administrator to selectively upgrade the software on sites in the network without needing to upgrade all sites simultaneously. A specific use-case for this feature is an Administrator testing the new software on few branch sites before installing it on all sites in the network.

Prerequisites and requirements

Before proceeding with performing partial software upgrade; review the following requirements:

  1. Have an active SD-WAN version 10.0 or newer software. Click Enable Partial Software Upgrade checkbox. If you uncheck the box, the software that is currently running on the MCN appliance is applied to the branches which have active virtual paths running.

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  2. Stage new version of software using the MCN Change Management process with the same Major version number as the active software and the same configuration as the active configuration.

  3. The new software should be the same major version of software as the active software. The minor version can be different software version.

  4. The new software must first be staged to on all sites from the MCN. Stop at Activate Staged step of Change Management.

    For the configuration of the Active and Partial site, software must be identical on the MCN and Branch sites. It is not possible to have a different feature set enabled on partially upgraded sites. Proceed to individual sites to perform Local Change Management. See the instructions below for High Availability deployment.

To perform partial SD-WAN software upgrade:

There are two scenarios in which you can perform partial SD-WAN software upgrade on a branch node; High Availability mode and non-High Availability mode.

Upgrade branch node without high availability mode

  1. In the Citrix SD-WAN web management interface, navigate to the branch site, which needs to be upgraded through the Partial Site Upgrade process.

  2. Open Local Change Management. Click Next.

  3. Click Activate Staged.  Each branch site will now be installed with new software version.

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Upgrade branch node in high availability mode

  1. In the SD-WAN web management interface, navigate to the branch site, which needs to be upgraded through the Partial Site Upgrade.

  2. Disable service on the standby appliance.

  3. On the primary appliance, open Local Change Management.

  4. Click Activate Staged. This appliance will now be installed with new software version.

  5. On the standby appliance, open Local Change Management.

  6. Click Activate Staged. The standby appliance will now be installed with new software version.

  7. After the primary and standby appliances have completed the activation process, enable service on the standby appliance.

Upgrade network

When you are ready to bring the network in sync, navigate to the MCN network change management screen, and click Activate Staged.

Partial software upgrade using local change management