I've been experiencing random disconnects on my Xbox 360s. I had experienced them in the past, but very infrequent (once or twice a week, at most). I've noticed over the past few months they've become more frequent. We want to use the 360s as our main console now (see the next paragraph), but as we're trying to do that these disconnects are becoming a major barrier to our enjoyment of Live and the services tied to it.
I've only recently started using this 360s more frequently. Previously it was the office console, used perhaps once or twice a week. We have a "white" Xbox 360, 20gb model (upgraded to the 120gb drive), that I had been using in the front room for the past month without issue (we've recently moved into a new house). I can reconnect my "white" Xbox where the 360s is in the front room (where it had been up until a week ago) and have absolutely no issues, consistent connection to Live every time, but when I use the 360s we see random disconnects averaging a few times an hour, sometimes less.
As you will see below I have tried several troubleshooting steps. I don't know if perhaps there is something different in the way the networking hardware works between the original "white" model and the new 360s, but it seems odd to me that one would work flawlessly and the other have so many issues.
What Country/State/Province do you live in? Concord, California, USA
Modem brand & model number: Motorola SB6121 SURFboard
Router brand & model number: Cisco RVS4000
If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter? N/A
Things you have tried: Reset router multiple times, reset modem multiple times, reset/swapped network switch, restored my Live profile, cleared the Xbox cache, forced re-install of December 2011 dashboard update.
Is UPnP Enabled? Yes/no/Unknown Yes
Do you have a NAT error? If so, what is your NAT? No NAT error.
Any Error Codes you encounter: No errors encountered.
Who is your ISP(Internet Service Provider)? Comcast/Xfinity
After you run "Test Xbox LIVE connection" press “Y” for "More Info”. In the pop-up that appears, what are the following values, if shown? (If a value below does not appear for you, just leave it blank.)
W: 0000 - 000B
X: 0000 - F001
Y: 20A8 - 4840
Z: 0000 - 0000
ID: FFFF - FFFF
L: 8015 - 100C
Q: 8015 - 100C