Ok, Cox fixed something yesterday and I have no idea what, because they won't tell me. Can't wait to have problems again so Cox can blame MY equipment again!
Just got off the phone with a field tech supervisor, Cox still doesn't know what the problem is and they're still trying to fix it. Basic troubleshooting says begin where it works and work backwards down the network until it doesn't work. At least I'm running megablast now:
This is a very strange one. How long was your modem running when you originally posted those modem signals? Was it at least 24 hours? Your signals are great, you have an OFDM channel and the only problem seems to be downstream. It seems like it would take an incredible level of oversubscription to cause that much of a downstream slowdown, and yet still have upstream working fine. Can you post your modem signals again after letting the modem run for at least 24 hours? I want to see if you have any uncorrectable codewords (which you shouldn't on a clean line. I've had less than 50 uncorrectable code words outside of maintenance windows in the last 8 months but all of my problems involve noise on the upstream).
Modem has been up for 71 hrs (first post was about 21hrs). When I first posted my levels, I had a 2 way splitter in to knock down the signal (other port terminated), because I think 10dBmV is too hot for the modem, but the tech removed it. This has of course lowered my upstream levels, because the line has less attenuation on it now. Either way, MY connection to Cox is pretty solid, I'm just getting ** for bandwidth, but so are my neighbors and apparently everyone in "Area 7" of Las Vegas.
Yeah, those are really good. The uncorrectables on the OFDM channel aren't great but aren't enough to cause that level of speed drop.
Crazy thought but have you asked Cox to triple check the provisioning on your modem? It's just seems too coincidental that your speeds are topping out at 94/35 instead of the 940/35 that you're supposed to be getting. I wonder if it's as simple as someone forgetting to type a 0 in the configuration file. I just can't imagine that a node's downstream could be that overloaded and yet the upstream would still be running at full speed. It just doesn't add up.
EDIT: Also are you plugged directly into the modem and confirmed that you have a gigabit link? 94 is about the maximum speed for a 100 Mbps link. It just seems like something is limiting you to 100 Mbps instead of 1 Gbps.
