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CM2050V modem drops connection/freezes
Having a problem with my CM2050V Modem. Will drop connection randomly about once a day. Power cycling the device was working to fix the issue for a while. It will now drop connection, and then fre...
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router
Event Log
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I also have some earlier event log screen shots that I can post
- Cable Connection
Frequency start Value This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. Starting Frequency Startup Procedure Procedure Status Comment Acquire Downstream Channel 507000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enabled BPI+ Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 42 507000000 Hz 4.2 dBmV 41.1 dB 0 0 2 Locked QAM256 1 531000000 Hz 3.5 dBmV 41.0 dB 0 0 3 Locked QAM256 2 537000000 Hz 3.4 dBmV 41.0 dB 0 0 4 Locked QAM256 3 543000000 Hz 3.5 dBmV 41.0 dB 0 0 5 Locked QAM256 4 549000000 Hz 3.5 dBmV 40.9 dB 0 0 6 Locked QAM256 5 555000000 Hz 3.4 dBmV 41.0 dB 0 0 7 Locked QAM256 6 561000000 Hz 3.2 dBmV 40.8 dB 0 0 8 Locked QAM256 7 567000000 Hz 3.2 dBmV 40.8 dB 0 0 9 Locked QAM256 8 573000000 Hz 3.2 dBmV 40.7 dB 0 0 10 Locked QAM256 9 579000000 Hz 3.3 dBmV 40.7 dB 0 0 11 Locked QAM256 10 585000000 Hz 3.3 dBmV 40.6 dB 0 0 12 Locked QAM256 11 591000000 Hz 3.5 dBmV 40.7 dB 0 0 13 Locked QAM256 12 597000000 Hz 3.5 dBmV 40.6 dB 0 0 14 Locked QAM256 13 603000000 Hz 3.6 dBmV 40.7 dB 0 0 15 Locked QAM256 14 609000000 Hz 3.3 dBmV 40.5 dB 0 0 16 Locked QAM256 15 615000000 Hz 3.2 dBmV 40.6 dB 0 0 17 Locked QAM256 16 621000000 Hz 2.9 dBmV 40.4 dB 0 0 18 Locked QAM256 17 627000000 Hz 3.2 dBmV 40.6 dB 0 0 19 Locked QAM256 18 633000000 Hz 3.4 dBmV 40.5 dB 0 0 20 Locked QAM256 19 639000000 Hz 3.6 dBmV 40.6 dB 0 0 21 Locked QAM256 20 645000000 Hz 3.5 dBmV 40.6 dB 0 0 22 Locked QAM256 21 651000000 Hz 3.5 dBmV 40.5 dB 0 0 23 Locked QAM256 22 657000000 Hz 3.0 dBmV 40.2 dB 0 0 24 Locked QAM256 23 663000000 Hz 3.0 dBmV 40.3 dB 0 0 25 Locked QAM256 24 669000000 Hz 2.7 dBmV 40.1 dB 0 0 26 Locked QAM256 25 675000000 Hz 3.0 dBmV 39.7 dB 0 0 27 Locked QAM256 26 681000000 Hz 3.2 dBmV 40.3 dB 0 0 28 Locked QAM256 27 687000000 Hz 3.3 dBmV 40.2 dB 0 0 29 Locked QAM256 43 513000000 Hz 4.0 dBmV 41.1 dB 0 0 30 Locked QAM256 44 519000000 Hz 3.9 dBmV 41.1 dB 0 0 31 Locked QAM256 45 525000000 Hz 3.5 dBmV 40.9 dB 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 81 5120 16300000 Hz 42.5 dBmV 2 Locked ATDMA 82 5120 22800000 Hz 43.3 dBmV 3 Locked ATDMA 83 5120 29200000 Hz 43.3 dBmV 4 Locked ATDMA 84 5120 35600000 Hz 44.3 dBmV 5 Not Locked Unknown 0 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 0 Hz 0.0 dBmV Downstream OFDM Channels Channel Lock Status Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier
Number RangeUnerrored
CodewordsCorrectable
CodewordsUncorrectable
Codewords1 Locked 0 ,1 ,2 ,3 33 780000000 Hz 4.1 dBmV 39.2 dB 1108 ~ 2987 384828136 351429590 0 2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked 0 0 0 Hz 0 dBmV 2 Not Locked 0 0 0 Hz 0 dBmV Current System Time:Tue Jul 02 19:18:10 2024 System Up Time:03:07:15
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Your cable connections page looks good but your logs don't. Your logs are indicating a line issue by the t3 erros and the dynamic range window violations. The violations indicate the power level on some channels is going in/out of spec.
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.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.- It is currently plugged directly to the input cable from the access point running into the house. I initially had a 7db splitter, but that was the first thing I removed when I first started having the issue/troubleshooting. I will inspect the cable and check the cables on the outside of the house then report back.
Quick update. What I thought was the direct cable in actually had a female to female adapter, which then connected to my modem(input cable is only about 15 in long). I removed that and now I am plugged directly into the input cable. Reset the modem and connection has been restored. Fingers crossed that its only a failing adapter, but we will see. Ill update if it goes out again.
