Is there a feature in Extreme Management Center 8.1.0.52 where you can obtain VLAN detail information, such as what EAPs ring it is protected by. In Ridgeline 4.0 you would select a VLAN from the VLAN Tab and it would provide all the detail information?
Doing a right click on the site , View > FlexView > XOS EAPS VLAN will populate the information of the EAPS control and protected VLAN, can you check if this helps?