2 Messages
Intermittent internet drops (5 minutes at a time); very bad SNR on 3 channels
For the past week, I have been having my internet service drop for about 5 minutes at a time, a few times a day. I replaced my equipment in hopes this would solve it, but have seen no fix.
I notice that I have very low signal quality on 3 channels. This is an SB6190 modem which is a 32x8 device.
On my 32 bonded channels, I'm seeing SNR of 40 dB (+/- 1 dB) on almost all of them. But channels 33-35 are very low quality. Channel 33 (627 MHz) is showing as Not Locked; Channel 34 (633 MHz) is showing 37.09 dB, with 168,000 Corrected and 39,000 Uncorrectables; Channel 35 is showing 31.92 dB, 134,000 Corrected and 79,000 Uncorrectables.
Is it reasonable to think these problems are related? I am wondering if 3 poor channels may cause the connection to be more fragile and therefore drop and take a few minutes to re-establish. Is this an issue with my end (cabling, perhaps) or is it possible that this is equipment malfunctioning on Xfinity's side?
I also see in the event log a large number of "Lost MDD Timeout" and "RCS Partial Service" errors listed, even when the internet is working.
Also, I don't think this is relevant, but I'm only seeing 5 upstream bonded channels, where I expected that my 32x8 modem would show 8.
user_noname
Contributor
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168 Messages
7 months ago
@user_y55dvg - depends how comfortable you are troubleshooting, you could start with the steps in this Post or another webpage if you wish.
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EG
Expert
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106.3K Messages
7 months ago
@user_y55dvg wrote;
but I'm only seeing 5 upstream bonded channels, where I expected that my 32x8 modem would show 8.
That's normal. Comcast does not yet offer 8 channels in any market areas. 3-6 is typical. It all depends on the capacity needs of any given local area. It gets decided by their engineering / capacity planning departments on how many are needed to handle the utilization.
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EG
Expert
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106.3K Messages
7 months ago
@user_y55dvg wrote;
"Channel 35 is showing 31.92 dB"
That's far out of spec ! It appears that you have a pretty severe suckout going on / noise ingressing into the line(s) somewhere at that range of frequencies. If you can't find anything obvious, you may want to consider getting a tech out to investigate this one. The problem may lie beyond your premises.
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