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Forum Discussion
Modem....CM10000v2
So is my modem done, or just need reprogrammed? Its dropping internet..... Time Priority Description 2024-09-06, 19:25:34 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6...
got a screensnip of the cable connections page with the logs?
arting Frequency <tabindex=-1>Startup Procedure</tabindex=-1>
Procedure Status Comment Acquire Downstream Channel 645000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv4 only <tabindex=-1>Downstream Bonded Channels</tabindex=-1>
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 12 645000000 Hz 9.0 dBmV 40.9 dB 1471353494 0 0 2 Locked QAM256 3 591000000 Hz 7.6 dBmV 40.1 dB 1470640845 0 0 3 Locked QAM256 4 597000000 Hz 7.7 dBmV 40.2 dB 1470644264 0 0 4 Locked QAM256 5 603000000 Hz 8.1 dBmV 40.3 dB 1470648586 0 0 5 Locked QAM256 6 609000000 Hz 8.1 dBmV 40.3 dB 1470652597 0 0 6 Locked QAM256 7 615000000 Hz 8.5 dBmV 40.6 dB 1470656237 0 0 7 Locked QAM256 8 621000000 Hz 8.5 dBmV 40.6 dB 1470660257 0 0 8 Locked QAM256 9 627000000 Hz 8.5 dBmV 40.7 dB 1470664169 0 0 9 Locked QAM256 10 633000000 Hz 8.6 dBmV 40.5 dB 1470667908 0 0 10 Locked QAM256 11 639000000 Hz 8.8 dBmV 40.9 dB 1470671105 0 0 11 Locked QAM256 13 651000000 Hz 9.1 dBmV 41.0 dB 1470674878 0 0 12 Locked QAM256 14 657000000 Hz 9.0 dBmV 41.2 dB 1470679062 0 0 13 Locked QAM256 15 663000000 Hz 9.2 dBmV 41.2 dB 1470682099 0 0 14 Locked QAM256 16 669000000 Hz 8.8 dBmV 41.1 dB 1470685628 0 0 15 Locked QAM256 17 675000000 Hz 9.3 dBmV 40.8 dB 1470683875 0 0 16 Locked QAM256 18 681000000 Hz 9.3 dBmV 41.3 dB 1470687664 0 0 17 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 18 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 19 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 20 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 21 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 22 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 23 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 24 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 25 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 26 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 27 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 28 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 29 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 30 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 31 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 <tabindex=-1>Upstream Bonded Channels</tabindex=-1>
Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 1 17300000 Hz 37.8 dBmV 2 Locked ATDMA 2 23700000 Hz 37.8 dBmV 3 Not Locked Unknown 0 0 Hz 0.0 dBmV 4 Not Locked Unknown 0 0 Hz 0.0 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV <tabindex=-1>Downstream OFDM Channels</tabindex=-1>
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1, 2, 3 159 276000000 Hz 3.7 dBmV 35.8 dB 886 ~ 3209 7043718667 1276189869 0 2 Locked 0, 1, 2, 3 160 810000000 Hz 9.3 dBmV 33.8 dB 166 ~ 3929 11434663251 1783583421 0 <tabindex=-1>Upstream OFDMA Channels</tabindex=-1>
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Locked 3, 4, 9, 10, 11, 12, 13 3 23700000 Hz 33.3 dBmV 2 Not Locked 3, 4, 9, 10, 11, 12, 13 0 0 Hz 0.0 dBmV 2024-09-07, 18:02:51 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 18:02:51 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:57:46 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:57:46 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:42:30 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:42:30 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:37:26 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:37:26 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:32:24 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:32:24 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:17:13 Warning (5) DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; 2024-09-07, 17:17:13 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=6c:cd:d6:94:14:5c;CMTS-MAC=00:38:df:9b:4e:3d;CM-QOS=1.1;CM-VER=3.1; Power a bit too high for the download channels:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
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. CAT6 is recommended.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/
