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Forum Discussion
CM2050V - Significant packet loss detected - Is my Cable modem failing?
It is suspected that the cable modem may be experiencing a defect and thus necessitate replacement. During the process of backing up substantial video files, ranging in size from 40GB to 80GB, to a c...
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.
Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended.
Power levels are on the low side but with in specs.
You've got some correctables and uncorrectabls that should be zeros.
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://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
Thanks for you suggestions. I have already done what was suggested prior to posting.
Comcast has already checked the lines and claimed they are all good. Comcast claims that my modems is "screaming" causing network issue (i.e. brings down the network) in my condo complex. This happens only when uploading files as mention earlier.
As a result, they added a filter to my connection. That is why only one upstream channel is locked and the other 3 do not locked. Also, the power level is above 50 dBmV, when prior to Comcast adding the filter, 4 channels locked and the power levels were between 44 dBmV - 48 dBmV, never above 50 dBmV!
That being all said, my down load speeds and uploads speed are good. The download speed hovers around 1000 Mbps - 1300 Mbps and the uploads speed (with the filter) hovers around 280 Mbps - 350 Mbps.