Visitor
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8 Messages
Experiencing WAN outages multiple times per day since June 12
The outage period, as reported on my home network, is approximately 1min 30sec.
Multiple times a day and throughout the date and night.
Visitor
•
8 Messages
The outage period, as reported on my home network, is approximately 1min 30sec.
Multiple times a day and throughout the date and night.
user_wtg1dt
Visitor
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8 Messages
1 day ago
My modem reports UCD invalid or channel unusable errors multiple times a day.
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EG
Expert
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111.5K Messages
1 day ago
Please post all of the error log entries in their entirety (copy and paste them, don't post a screenshot) but redact any CM MAC and the CMTS MAC addresses for your privacy. They are considered to be personal information. The posting of personally identifying information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publicly.
Please also copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.
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EG
Expert
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111.5K Messages
1 day ago
Thank you. The error logs are ugly. The downstreams were in spec at that moment. Are the upstream channel values being shown ? If so, please post them as well.
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EG
Expert
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111.5K Messages
9 hours ago
The upstream power values are ok as well. So even though the signal status values looked OK at that snapshot in time, the error log entries confirm that something is going on. Perhaps there is noise ingress into the line(s) / an upstream channel / return path impairment somewhere.
There are other signal stat values that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.
I'm going to escalate your issue to the Comcast corporate employees (The Digital Care Team) who are available to these boards. They will be able to poll the CMTS (Cable Modem Termination System) to check for any real-time degradation and / or error reports, see your node / cable plant, and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and check those upstream receive signal stats.
You should get a reply here in your topic. Good luck !
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EG
Expert
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111.5K Messages
7 hours ago
@user_wtg1dt
It's my pleasure ! 😊
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