ExtremeZ-IP...
It was handy back in the day (and also very expensive) when Macs used AFP, but things move on.. like using a capital Z at the end of a product name.. (its not 1990 anymore more)
macOS is SMB3 by default... supports DFS out the box..
Next you'll be telling us about ADmit-Mac .../shudder/
As always.. Keep it simple (stupid)