I work for a restaurant company that's upgrading from 6.7 to 15.1. Seems instead of getting with the times the newer version plays even less nicely with anything but a dumb switch. I've had some locations where I can create a vlan for the BOH and the terminals, separate NIC for EDC and that talks fine to primary network vlan. But once start to get more than one switch involved Aloha just stops talking to the switch the BOH server isn't on. Now mind you I can ping the terminals in both direction and command center still works on the terminals on the other switch. just wont load the program. I'm using Meraki MS120/220 switches btw if that gives any insight to it.