But since it’s all UDM with built-in controller, they all have their own sites.
I think you can’t manage, for example, another USG. This USG must have its own Cloud Key (Controller) to be able to manage it in you UDM-pro ?
Yes and No. In a way.
Previously, say with CloudKey2. You have a single controller. (CloudKeyHardware)
On that controller you have the UniFi (software)
Within the software, you could have multiple sites or locations.
At each site you would have seperate USG (hardware router)
I used to do this an ran 6 locations on a single CloudKey then to CloudKey Gen2+.
Now. A UDM or UDM-Pro is a controller, software, single site managed on a single device.
Also now. UniFi Portal.
Allows managing multiple UDM's from a single sign-on website.
My difference previously, you log in to UniFi and from a drop down, you swap locations or "sites" from the drop down.
All Sites would also be on a single software version number.
My issue was if that controller went offline, all sites were offline.
Currently UniFi Portal will list each UDM.
Clicking on that UDM gives access to that particular UDM's hardware settings.
Then each UDM has UniFi with single-site that it manages.
For myself, the good thing is. With having 6 locations. I can have each one set independantly.
Different UDM software, different UniFi software per location.
The drawback, if any, since using this new system is if I am in my personal network, I click a big U in the upper left corner, it takes me back to the list of sites and I go in to another site from that rather than click the Sites dropdown menu on a single page.
There are pluses and negatives per both and both have their usage scenario. Just for me, the newer current system works a little better for me.
One of the main reasons I was looking for a USG replacement was throughput with IDS/IPS enabled. Which drops your total throughput to around 85Mbps.
Which I ran at all office locations. So paying for speedy 500Meg to Gbps internet with 30+ workstations would get bottlenecked down to 85Mbps. And this location had approximately 200 devices daily on 85Mbps.
Now if you had site to site VPN locations envolved you are around 12Mbps of throughput. Which was no bueno.
Swapping in a UDM or UDM-Pro and IPS enabled throughput is back to 850+MBps. With VPN, still well over 300MBps so a 500MBps line works just fine at 50% reduction in cost.
At a business location, AT&T Fiber 1000/1000 is over $650/month with static IP's, closer to 7 and change taxes and fees.
Also having a static IP for the host CloudKey was a major positive.