HA pair of SD-WAN SE/EE appliances running pre-9.3.4 versions may encounter a “file copy loop” when upgrading to version 9.3.4 and later

1. Disable the Secondary MCN

a. Go to Configuration > Virtual WAN > Enable/Disable/Purge Flows

b. Uncheck “Perform a diagnostic dump before doing the disable operation”

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c. Disable Citrix Virtual WAN Service

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2. Upgrade Primary MCN following correct procedure per our documentation:

3. Upgrade Secondary MCN using Local Change Management

4. Enable the Secondary MCN

a. Go to Configuration > Virtual WAN > Enable/Disable/Purge Flows

b. Enable Citrix Virtual WAN Service

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This issue is fixed in version 9.3.4 and later versions.

Related:

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