I have a moderately complex network with 200-300 total clients, 45 Unifi switches and access points, multiple VLANs.
We have outgrown the USG and I have a new pfSense appliance to replace it, but not installed yet.
My question is regarding how to go about this with minimal disruption of the Unifi setup, and overall network communication. In particular, when you setup a VLAN on a Unifi system with a USG, it automatically creates a new network, DHCP server, etc for you (which is very nice).
I realize that I will need to recreate the VLANs, networks, and DHCP servers within pfSense, but what is going to happen when I “forget” the USG within the Unifi site?
My concern is that all hell will break loose and a chunk of the network will just disappear.
Does anyone have a workflow or best practices to follow when replacing a USG with a non-Unifi router?