I use JCI controllers but the FX version 99% of the time. Never used the metasys nae or metasys supervisors so not sure if they handle ip the same as FX jaces. I use BASRT routers as much as possible to unload the supervisor from have to handle the token passing. Also like building the network backbone as an IP network. Lets me connect to any controller from anywhere in the building. Makes commissioning and trouble shooting much easier. Also has reduces alot of my network wiring and interference issues.