Why are all of my message-VPNs appearing as down on the backup appliance after an upgrade?
Starting in SolOS 9.1, a Message VPN state will appear as Down with the reason Not Active if the broker is not in the Redundancy Local Active state. Previously, the VPN would show as Up regardless of the redundancy state. This will apply to all VPNs on the standby broker. After a failover the VPNs will transition to Up.