Hi @mcn1841 ,
I have a network with Eduroam active at the moment. The safest and easiest way to do this is create a management VLAN for your network devices or AP's. (e.g 10.0.1.0/24)
Put all your network devices in this range and do no allow any client devices to get in here.
After this you can ask the people who manage the Eduroam Radius server to whitelist 10.0.1.0/24 for radius authentication and accounting. This way you do not need to register them as separate clients.
All you need to do when this is active is make sure your AP's know the route to the Radius server IP.
When you have this route the radius tests should work.
If they have not changed the ports it's 1812 for authentication and 1813 for accounting.
If you have any other questions let me know!
Cheers,
Ben