Help me show him the truth
August 21, 2008 12:15 PM Subscribe
Help me convince my friend of a basic networking truth. He sent me an e-mail saying he was assigning static IPs to all the devices on his home network so the signal would be stronger. More details inside:
posted by arniec to computers & internet (21 answers total)
My friend has the following set-up: His cable modem goes to his router. His router feeds wall jacks throughout his house. In his basement is a single CAT-5 wall jack, but since he has several devices there he got a switch, so the wall jack goes to the switch, which then goes to his DirectTV and his XBox 360.
This worked fine in this set-up for months. But a couple weeks ago he stopped being able to receive On Demand programming. If he plugs the DirectTV right into the wall jack it works, but through the switch it does not.
He then assigned his DirectTV and his XBox 360 static IPs and the On Demand programming worked through the switch.
He believes the switch is causing weaker signal and the static IP is strengthening the signal to his DirectTV which, as an IT network tech, I know is NOT the case. And I've told him this but I cannot convince him that it's not a signal issue since he has seen the "evidence" that a static IP fixed the On Demand issue that a static IP didn't.
So (a) why would his DirectTV not work through a switch with a dynamic IP and (b) How can I explain in complete laymen's terms the fundamental networking essentials concepts of digital signal transmission through shielded twisted pair cable is NOT effected by the IP addresses being static or dynamic?