I'm not trying to be ignorant with my following comment; However if your just going to check my signal levels and tell me to reboot my modem, I'd rather not waste your time or mine. At this point it is either a firmware or a CMTS issue. I have purchased a new modem (same model) with the exact same issue.
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I recently upgraded to Gigabit service roughly 3 months ago. Over the past 2 months everything has been working flawlessly and speeds have been consistently 945mbps / 43mbps when doing speed test. The past maybe 3 weeks, my speeds are now as low as 350mbps with an average of 650mbps. Upon looking at my modem status page, I see my modem is no longer bonding to the D3.1 OFDM channel and only bonding to 24 d3.0 channels. Nothing has changed, and i've had two tech out already and both determined nothing is wrong locally.
I have my own purchased Netgear CM1000 purchased from Amazon, but now exchanged for a Netgear CM1000 purchased at my local BestBuy.
After all my troubleshooting & multiple tech visit i'm starting to believe this may be a firmware bug (I was running firmware 3.01.04, but now have firmware 3.01.06) or maybe a CMTS issue, but unable to gather any further information on that. I'm hoping someone may have some experience in troubleshooting this issue or maybe a Comcast agent can help track down this issue as at this point, i'm completely lost.
ANY useful help would be appreciated. I've included screenshots of my signal levels, event logs & firmware page. Please let me know if any more information is needed.
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