Symptoms:
This issue has several symptoms. The following list summarizes what has been observed in the field:
VMware SD-WAN by VeloCloud Edge
When the Active Edge detects the Standby Edge, it tries to fetch the Standby Edge's software version and if the version is greater than 3.4.0, the Active Edge copies the network configuration file to the Standby Edge. While fetching the Standby Edge's software version, there could be an error which leads to an exception. This exception is not handled in the Edge's High Availability code, which results in the HA worker thread being stopped and any further communication with the Standby Edge fails and the Standby becomes unavailable for failover.
A fix for issue # 77525 included in the following Edge builds:
Workaround:
Please reach out to VMware SD-WAN Support to recover from this state and restore full High-Availability for that site.
Moreover, if you have VMware SD-WAN High Availability site on one of the affected builds, please reach out to VMware SD-WAN Support before you upgrade it (to one of the fixed builds).
For more information on the VMware SD-WAN High Availability feature, please consult the VMware SD-WAN Administration Guide.
Impact/Risks: