I'am really new on EOS and had to much Cobalt-thoughts when I would solve things. 
We had order new Apex-consolles and going to change from Cobalt to EOS. We would put them up in a multiconsole-system on every stage. All stage is connected togheter in a large network. In my "core"-switch I block sACN, so all the sACN-universe only is alive on each stages, so every stage starts with universe 1. It work with all the stategs now with Cobalt and it should work with EOS.
If I send power ON/OFF in the network I only would have all the consolles on each stage powering ON or OFF. ;)
I don´t want to solve this with VLAN, because I would have a "clean" networkswitch on every stage and would block it in my "core"-switch. I basically want to be able to go and borrow a switch anywhere and basically run it in factory default to save a show because I don´t need to be connected to my Core-switch to run a show. The only thing that I miss is WIFI and FileServer If i disconnect the stage from the Core-switch.
Do anyone know what TCP PORT-number that EOS send power ON or OFF-commands? Then I could easily block this network package to reach other stages whitout VLAN´s in my Core-switch.
Is there any list what networkpackage ports EOS use and some information what information it contains?
I could sniff my network with Wireshark, but if there´s a list it goes faster to block stuff.
