Completely Baffled

Okay, so after several days (weeks even) of trying to connect multiple Avid Artist consoles (Control, Mix and Transport) via an ethernet switch (NETGEAR ProSAFE GS105 5-port gigabit desktop switch), I was finally successful. I set each unit up on a static IP address and only 2 of them are showing up (The Mix and the Transport). The Control initially showed up when I connected it directly to the computer without the ethernet switch, but it isn't now. I tried changing the static IP address and it didn't work (The switch is at 10.0.0.2, the control is at 10.0.0.3, the transport is at 10.0.0.4 and the mix is at 10.0.0.5). I am officially baffled and confused. I simply don't know what to try next. Any help or advice would be GREATLY appreciated.