Hello, i have a actiontec router. He has his switch connected to a ethernet port on the router. He streams stuff from xbox, ps3, etc, and it kills latency. How can i set that ethernet port to be on different broadcast domain, or something that makes it not affect my latency so much?
What is your inet connection speed? If you've got a 30Mbit connection or so then setting his port to 10Mb should work pretty well. 10Mbit is pretty standard for cable/dsl here which wouldn't really be doing you any good because they could still use all the bandwidth you've got at just 10Mbit.
Thats kinda looking like my only option....What if i just change his ethernet port to half duplex 10 Mb
Depending on your connection bandwidth that could work, but he could still cause increased latency with lots of open ports (like from any torrent program). If available in your router, QoS would likely give you the best control over anything he might throw at the connection. It looks like most Actiontec routers have pretty flexible QoS controls.