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JesseFaulk's avatar
JesseFaulk
Aspirant
Dec 19, 2023

Cax30 dropping internet connectivity

I'm having a similar issue, with signal dropping randomly throughout the day. Based on the last comment, it sounds like my Correctables and Uncorrectables numbers are terrible. Cox recently ran fresh lines, so while my instincts were that the lines were an issue, it seemed unlikely. Having looked at this, I now think they must have used a bad line or something.

 

One question I did have is that I've seen suggestions for enabling Extended Upstream Transmit Power, but it won't let me check the box to turn it on. Can you confirm that these numbers are in fact bad and likely related to signal strength from the ISP, and do you have any suggestions from a software perspective since Cox is useless and I don't know when I'll be able to get the lines tested/fixed?

 

 

 

3 Replies

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Dec 19, 2023

    What Firmware version is currently loaded?
    Please post a copy and paste of the modems event log page.
    https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router

     

    You have a ton of Correctables and Un-correctables that should be zero. 

     

    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

    • JesseFaulk's avatar
      JesseFaulk
      Aspirant
      Dec 19, 2023

      Firmware Version V1.4.12.2, Also just realized it's a CAX30, not a CAX80, but I'm guessing the issues are still very relevant.

       

      Here's a sheet of the full event log in case. Most recent is pasted below (full event log exceed character max for post).

       

      Time Priority Description
      2023-12-19 10:35:01 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 10 13; New Profile: 9 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 10:10:38 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 9 13; New Profile: 10 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:34:59 Error (4) DBC-ACK not received;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:34:56 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 9 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:19:50 Warning (5) Dynamic Range Window violation
      2023-12-19 9:19:50 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:15:21 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:09:56 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 10 13; New Profile: 11 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:09:30 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 9 13; New Profile: 10 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 9:07:51 Warning (5) Dynamic Range Window violation
      2023-12-19 9:07:51 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 8:34:53 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 10 13; New Profile: 9 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 8:13:36 Warning (5) Dynamic Range Window violation
      2023-12-19 8:13:36 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 7:48:50 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 9 13; New Profile: 10 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 6:47:23 Warning (5) Dynamic Range Window violation
      2023-12-19 6:47:23 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 5:41:09 Warning (5) Dynamic Range Window violation
      2023-12-19 5:41:09 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 5:34:35 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 10 13; New Profile: 9 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 5:19:45 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 9 13; New Profile: 10 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 4:36:54 Warning (5) Dynamic Range Window violation
      2023-12-19 4:36:54 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 4:34:30 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 10 13; New Profile: 9 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 3:57:27 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 9 13; New Profile: 10 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 3:34:26 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 10 13; New Profile: 9 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 3:32:20 Warning (5) Dynamic Range Window violation
      2023-12-19 3:32:20 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;
      2023-12-19 3:16:53 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 9 13; New Profile: 10 13.;CM-MAC=34:98:b5:90:ce:08;CMTS-MAC=b0:8b:d0:6d:d3:1f;CM-QOS=1.1;CM-VER=3.1;