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Correctables & Uncorrectables high
Downstream Bonded Channels Channel Locked Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 11 Locked QAM 256 11 345000000 Hz 9.5 40.3 2094 2516 From the Cable Diagnosti...
Power is TOO HIGH on the channels:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
Get you a -6db coax cable line attenuator.
Correctables and un-correctables should be zeros.
Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
Keep in mind, those columns of correctables/uncorrectables reset to zero when you reboot your modem. Just looking at the numbers provides very little information unless you know the system up time over which they have accumulated.
I have seen zeros, briefly. Then the numbers increase rapidly.
Seeing numbers >1000 or >2000 have accumulated over 1-2 days or a few days.
So it sounds like the correctables/uncorrectables never go down, as if the correctables never get corrected by the modem or ISP?
Correctables should maintain zero or near zero levels. This can be caused buy bad cabling, loose connections.
So, without rebooting, the numbers get bigger (5255 7330). If one column is correctable then what can be done to "correct"?
It sounds like labels A and B would be just as good and provide no information either.
I called Spectrum Technical Support and the clerk had never heard of correctables. What good is that?
I did arrange for a technician to come and check the cable to the house.
I also ordered an attenuator. Is the technician supposed to have one?
I gotta go.