NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

HGinDC's avatar
HGinDC
Guide
Jul 05, 2021

CM2000 Modem: blinking downstream light

Hello. I am using a Nighthawk CM2000 router (which, BTW, is not a listed model for the model dropdown) connected to a Nighthawk AX4 router. Periodically the downstream light on the modem starts blink...
FURRYe38's avatar
FURRYe38
Guru
Jul 06, 2021

Please post a copy and paste of the modems connection status page.
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. 
Be sure to power OFF the modem for 1 minute them back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853

HGinDC's avatar
HGinDC
Guide
Jul 06, 2021

Thank you for the response. Below is a copy of the "modem event log." Is this the info you requested? I have been often in touch with RCN and the modem has been "reprovisioned" several times. Also, I have had (and paid for) three service calls. This first time the tech replaced the connectors at the ends of the cable, and removed one splitter her found in the line. The subsequent visits found the signal to be within spec, and the tech stated that since I had my own modem that was all they could do since they did not support customer-owned modems.

 

Tue Jul 06 06:09:00 2021 (Error (4)) DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 05 01:45:51 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 05 01:45:26 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 05 01:21:01 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 05 01:20:36 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jul 02 18:09:00 2021 (Error (4)) DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jul 02 09:17:21 2021 (Critical (3)) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 29 06:09:00 2021 (Error (4)) DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Jun 26 23:09:53 2021 (Critical (3)) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:08 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:06 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.7;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.6;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.5;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.4;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.3;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.2;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Error (4)) Missing BP Configuration Setting TLV Type: 17.1;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 18:09:01 2021 (Warning (5)) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv4
Time Not Established (Critical (3)) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Fri Jun 25 09:41:52 2021 (Error (4)) DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:50:57 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:50:32 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:50:24 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:49:39 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:48:08 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:45:39 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:44:13 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:43:31 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:19:00 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:18:33 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:16:43 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:15:39 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:14:55 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:14:02 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;
Thu Jun 24 17:13:34 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:9f:5e:a8;CMTS-MAC=00:af:1f:1f:85:5e;CM-QOS=1.1;CM-VER=3.1;

  • FURRYe38's avatar
    FURRYe38
    Guru
    Jul 06, 2021

    Please post a copy and paste of the modems connection status page.

    • HGinDC's avatar
      HGinDC
      Guide
      Jul 06, 2021
      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 Channel603000000 HzLocked
      Connectivity StateOKOperational
      Boot StateOKOperational
      SecurityEnabledBPI+
       
      Downstream Bonded Channels
      Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
      1LockedQAM25610603000000 Hz-3.2 dBmV42.0 dB00
      2LockedQAM2561549000000 Hz-0.8 dBmV43.4 dB00
      3LockedQAM2562555000000 Hz-1.7 dBmV42.7 dB00
      4LockedQAM2563561000000 Hz-2.8 dBmV42.3 dB00
      5LockedQAM2564567000000 Hz-2.7 dBmV42.3 dB00
      6LockedQAM2565573000000 Hz-1.1 dBmV42.4 dB00
      7LockedQAM2566579000000 Hz-1.1 dBmV42.5 dB00
      8LockedQAM2567585000000 Hz-1.2 dBmV42.6 dB00
      9LockedQAM2568591000000 Hz-1.9 dBmV41.1 dB00
      10LockedQAM2569597000000 Hz-2.1 dBmV42.0 dB00
      11LockedQAM25611609000000 Hz-3.0 dBmV41.9 dB00
      12LockedQAM25612615000000 Hz-2.3 dBmV41.9 dB00
      13LockedQAM25613621000000 Hz-2.8 dBmV41.9 dB00
      14LockedQAM25614627000000 Hz-4.0 dBmV41.4 dB00
      15LockedQAM25615633000000 Hz-3.3 dBmV41.3 dB00
      16LockedQAM25616639000000 Hz-2.6 dBmV41.8 dB00
      17Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      18Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      19Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      20Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      21Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      22Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      23Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      24Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      25Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      26Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      27Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      28Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      29Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      30Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      31Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
      32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
       
      Upstream Bonded Channels
      Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
      1LockedATDMA1512036800000 Hz42.8 dBmV
      2LockedATDMA2512030350000 Hz42.3 dBmV
      3LockedATDMA3512023900000 Hz41.3 dBmV
      4Not LockedUnknown000 Hz0.0 dBmV
      5Not LockedUnknown000 Hz0.0 dBmV
      6Not LockedUnknown000 Hz0.0 dBmV
      7Not LockedUnknown000 Hz0.0 dBmV
      8Not LockedUnknown000 Hz0.0 dBmV
       
      Downstream OFDM Channels
      Channel Lock
      Status       		Modulation /
      Profile ID       		Channel
      ID       		Frequency Power SNR /
      MER       		Active Subcarrier
      Number Range       		Unerrored
      Codewords       		Correctable
      Codewords       		Uncorrectable
      Codewords
      1Locked0 ,1 ,2 ,3159657000000 Hz-1.7 dBmV41.2 dB646 ~ 344963583238859149577340070
      2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
       
      Upstream OFDMA Channels
      Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
      1Not Locked000 Hz0 dBmV
      2Not Locked000 Hz0 dBmV
       
      Extended Upstream Transmit Power
       
       

      Current System Time:Tue Jul 06 17:29:39 2021System Up Time:10 days 23:21:11

    • HGinDC's avatar
      HGinDC
      Guide
      Jul 06, 2021

      I am trying but when I copy the table and paste it here it says the table has HTML errors. It also says it will correct the errors for me, but when I accept and try to repost nothing appears. Can you suggest how I can post the status page?

      • FURRYe38's avatar
        FURRYe38
        Guru
        Jul 06, 2021

        Usually it should post if you do a direct copy from the web browser and paste in the post. 


        Do a screen capture and paste in to Paint and save off to file. Then select Choose File to attach to your post. Inline pictures have to be approved and we have to wait using the photo attach way. :smileyembarrassed: