I'm currently running a Netgear CM1150V and running into significant, intermittent connectivity issues. I have gigabit service and when things are running properly I get consistent 950Mbp downloads. The problems are occurring in the 18-26 downstream channel range and my 3 upstream channels. I will suddenly get S/N ratio drops on channels in this range from 40dB to 35dB accompanied by millions of uncorrectable codeword errors and a constant stream of modem error messages on these channels. The upstream signals simultaneously go up from 43dB to 51 dB. I also have downstream channel 22 completely lose its connection. Comcast says there is nothing wrong on their end. I verified with their tech. that my signal and S/N ratios exactly match what the tech. measures on their side. Of course, when they come out here, everything clears up!
My only solution is to lease, at least temporarily, an XFi gateway from Comcast to see if the problem is still occurring. My question is can I get the same detailed signal stats and error log from the XFi gateway that I get from my Netgear modem? If not, it will be difficult to document the problems. The only thing I can think of if there are no stats available is to run a continuous ping test on Ping Plotter and try to catch it when there's a problem, run a speed test and show that the speeds have dropped. Right now, when there is a problem, the download speeds drop from 950 to 80 Mbps.
Thanks for any help you all can provide.
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