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sdchris's avatar
sdchris
Aspirant
May 04, 2023
Solved

CM1100 Intermittent internet issue with COX

Hello all,

I have been having issues with my CM1100 disconnecting from the internet. I have had the modem for about 2 years and not sure how long the connection issue has been going on. I called Cox and of course everything on there end looks great and they blame the modem. So I wanted to post some of my logs and see if the power s/n ratio looks good. Thanks in advance for taking a look. 😁

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

<tabindex=-1>Startup Procedure</tabindex=-1>

ProcedureStatusComment
Acquire Downstream Channel237000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnableBPI+
IP Provisioning ModeHonor MDDIPv4 only

<tabindex=-1>Downstream Bonded Channels</tabindex=-1>

ChannelLock StatusModulationChannel IDFrequencyPowerSNR / MERUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
1LockedQAM25645237000000 Hz11.4 dBmV45.3 dB14325134026401507
2LockedQAM2561735000000 Hz7.5 dBmV42.4 dB1414096432115638
3LockedQAM2562741000000 Hz8.3 dBmV42.9 dB1414149172122561
4LockedQAM2563747000000 Hz8.4 dBmV42.9 dB1414182842070573
5LockedQAM2564753000000 Hz8.4 dBmV42.9 dB1414221942173542
6LockedQAM2565759000000 Hz7.9 dBmV42.6 dB1414257132072534
7LockedQAM2566765000000 Hz8.4 dBmV42.9 dB1414308041934516
8LockedQAM2567771000000 Hz8.3 dBmV42.8 dB1414344861991513
9LockedQAM2568777000000 Hz8.4 dBmV43.0 dB1414380582020494
10LockedQAM25625117000000 Hz12.5 dBmV44.5 dB141442962746285
11LockedQAM25626123000000 Hz12.6 dBmV44.8 dB141446910882280
12LockedQAM25627129000000 Hz12.7 dBmV44.9 dB1414503891015307
13LockedQAM25628135000000 Hz12.6 dBmV44.5 dB14145290516131064
14LockedQAM25629141000000 Hz12.3 dBmV44.6 dB14145316518174162
15LockedQAM25630147000000 Hz12.4 dBmV44.8 dB14145781016373286
16LockedQAM25631153000000 Hz12.2 dBmV44.9 dB14146311013742212
17LockedQAM25632159000000 Hz12.2 dBmV45.1 dB14146761215211334
18LockedQAM25633165000000 Hz12.1 dBmV45.1 dB14147186710981111
19LockedQAM25634171000000 Hz11.8 dBmV45.1 dB14147448919741284
20LockedQAM25635177000000 Hz12.1 dBmV45.3 dB1299541132459336
21LockedQAM25636183000000 Hz11.9 dBmV45.1 dB14148087329981348
22LockedQAM25637189000000 Hz11.7 dBmV45.2 dB14148459528051051
23LockedQAM25638195000000 Hz11.3 dBmV45.1 dB1414901941597859
24LockedQAM25639201000000 Hz11.3 dBmV45.1 dB1414948681077640
25LockedQAM25640207000000 Hz11.2 dBmV45.2 dB1414979541257427
26LockedQAM25641213000000 Hz11.3 dBmV45.1 dB1415022681384259
27LockedQAM25642219000000 Hz11.1 dBmV45.0 dB1415059441306288
28LockedQAM25643225000000 Hz11.1 dBmV45.1 dB1415093521365298
29LockedQAM25644231000000 Hz11.2 dBmV45.3 dB1415131501409302
30LockedQAM25646243000000 Hz11.6 dBmV45.3 dB14151152617951623
31LockedQAM25647249000000 Hz11.7 dBmV45.2 dB14151418615551116
32LockedQAM25648255000000 Hz12.0 dBmV45.2 dB1415138801458492

<tabindex=-1>Upstream Bonded Channels (Partial Service)</tabindex=-1>

ChannelLock StatusModulationChannel IDFrequencyPower
1LockedATDMA117600000 Hz48.3 dBmV
2LockedATDMA224000000 Hz48.3 dBmV
3LockedATDMA330400000 Hz48.8 dBmV
4LockedATDMA436800000 Hz49.5 dBmV
5Not LockedUnknown00 Hz0.0 dBmV
6Not LockedUnknown00 Hz0.0 dBmV
7Not LockedUnknown00 Hz0.0 dBmV
8Not LockedUnknown00 Hz0.0 dBmV

<tabindex=-1>Downstream OFDM Channels</tabindex=-1>

ChannelLock StatusModulation / Profile IDChannel IDFrequencyPowerSNR / MERActive Subcarrier Number RangeUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
1Locked0, 1159300000000 Hz12.2 dBmV42.8 dB296 ~ 78954592274905046213364
2Locked0, 1, 2, 3160918000000 Hz4.5 dBmV37.8 dB1108 ~ 2987177785436777371241434

<tabindex=-1>Upstream OFDMA Channels</tabindex=-1>

ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
1Not Locked3, 4, 9, 10, 11, 12, 13636800000 Hz48.5 dBmV
2Not Locked3, 4, 9, 10, 11, 12, 1300 Hz0.0 dBmV

 

Hardware
Troubleshooting

11 Replies

  • sdchris's avatar
    sdchris
    Aspirant
    May 04, 2023

    Here are the latest logs:

    2023-05-04, 13:54:08Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=bc:a5:11:d3:c7:ec;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:54:05Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:54:04Notice (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=XXX;MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:54:01Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:54:00Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159 160; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=XXX;MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:53:55Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;MAC=XXX;MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:53:54Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:d3:c7:ec;MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:53:51Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:52:33Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: 1; New Profile: 1 2 3.;CM-MAC=bc:a5:11:d3:c7:ec;MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:52:15Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:52:12Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:52:12Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:51:32Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:d3:c7:ec;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:51:31Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:51:23Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:51:19Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:49Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:43Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:41Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:d3:c7:ec;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:40Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:37Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:35Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:33Critical (3)No Ranging Response received - T3 time-out;CM-MAC=bc:a5:11:d3:c7:ec;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:32Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:50:32Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:54Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:53Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:48Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:40Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:39Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:32Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:30Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:14Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:05Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:49:05Critical (3)No Ranging Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:48:56Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:48:54Critical (3)No Ranging Response received - T3 time-out;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:48:52Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 13:48:52Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;

     

    Here is the log from the last time the internet went down earlier today:

    2023-05-04, 11:05:02Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:04:34Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 2.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:04:19Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:03:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:03:49Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 2.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:49Warning (5)Dynamic Range Window violation
    2023-05-04, 11:02:49Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:49Warning (5)Dynamic Range Window violation
    2023-05-04, 11:02:49Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:49Warning (5)Dynamic Range Window violation
    2023-05-04, 11:02:49Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:49Warning (5)Dynamic Range Window violation
    2023-05-04, 11:02:49Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:49Warning (5)Dynamic Range Window violation
    2023-05-04, 11:02:49Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:45Notice (6)DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:43Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:38Notice (6)TLV-11 - unrecognized OID;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-04, 11:02:38Warning (5)DHCP WARNING - Non-critical field invalid in response ;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv4
    Time Not EstablishedCritical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    Time Not EstablishedCritical (3)UCD invalid or channel unusable;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;

     

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    May 04, 2023

    Power levels are too high:

    https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

    ISP needs to bring them down.

     

    Lots of Correctables and Un-Correctables that should be zeros. 

     

    Lots of criticals and warnings that the ISP needs to review and resolve:

    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.
    https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853

    https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
    https://highspeed.tips/docsis-events/

     

  • sdchris's avatar
    sdchris
    Aspirant
    May 05, 2023

    I connected the modem outside directly to the coax coming from the street and bypassed a splitter and here are the numbers:

    <tabindex=-1>Startup Procedure</tabindex=-1>
    ProcedureStatusComment
    Acquire Downstream Channel237000000 HzLocked
    Connectivity StateOKOperational
    Boot StateOKOperational
    SecurityEnableBPI+
    IP Provisioning ModeHonor MDDIPv4 only
    <tabindex=-1>Downstream Bonded Channels (Partial Service)</tabindex=-1>
    ChannelLock StatusModulationChannel IDFrequencyPowerSNR / MERUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
    1LockedQAM25645237000000 Hz15.3 dBmV44.5 dB3609842514924
    2LockedQAM2561735000000 Hz15.7 dBmV43.6 dB339039064086
    3LockedQAM2562741000000 Hz16.0 dBmV43.8 dB339082843324
    4LockedQAM2563747000000 Hz16.0 dBmV43.9 dB3391175235512
    5LockedQAM2564753000000 Hz15.9 dBmV43.8 dB339155593364
    6LockedQAM2565759000000 Hz15.7 dBmV43.6 dB339194592790
    7LockedQAM2566765000000 Hz15.5 dBmV43.5 dB339226342993
    8LockedQAM2567771000000 Hz15.8 dBmV43.6 dB339273712443
    9LockedQAM2568777000000 Hz15.8 dBmV43.8 dB339309472370
    10LockedQAM25625117000000 Hz14.4 dBmV43.2 dB33934887130
    11LockedQAM25626123000000 Hz14.7 dBmV43.2 dB33938564330
    12LockedQAM25627129000000 Hz14.8 dBmV43.3 dB33942402180
    13LockedQAM25628135000000 Hz14.7 dBmV43.3 dB339458381250
    14LockedQAM25629141000000 Hz14.5 dBmV43.2 dB3394899355454
    15LockedQAM25630147000000 Hz14.7 dBmV43.6 dB33952432508259
    16LockedQAM25631153000000 Hz14.6 dBmV43.8 dB33956375433361
    17LockedQAM25632159000000 Hz14.7 dBmV43.9 dB3396063454066
    18LockedQAM25633165000000 Hz14.7 dBmV43.9 dB33964201260405
    19LockedQAM25634171000000 Hz14.6 dBmV43.8 dB33968354174459
    20LockedQAM25635177000000 Hz14.9 dBmV44.1 dB33972087141472
    21LockedQAM25636183000000 Hz14.8 dBmV44.2 dB33975932138473
    22LockedQAM25637189000000 Hz14.7 dBmV44.2 dB33978681148461
    23LockedQAM25638195000000 Hz14.5 dBmV44.0 dB33983423154429
    24LockedQAM25639201000000 Hz14.7 dBmV44.3 dB33987229361201
    25LockedQAM25640207000000 Hz14.9 dBmV44.3 dB3399125217031
    26LockedQAM25641213000000 Hz15.1 dBmV44.2 dB339947837636
    27LockedQAM25642219000000 Hz14.8 dBmV44.2 dB339989555538
    28LockedQAM25643225000000 Hz15.0 dBmV44.3 dB340023964737
    29LockedQAM25644231000000 Hz15.1 dBmV44.3 dB340063664636
    30LockedQAM25646243000000 Hz15.3 dBmV44.5 dB340064011872
    31LockedQAM25647249000000 Hz15.3 dBmV44.3 dB340076032100
    32LockedQAM25648255000000 Hz15.4 dBmV44.4 dB340070901472
    <tabindex=-1>Upstream Bonded Channels (Partial Service)</tabindex=-1>
    ChannelLock StatusModulationChannel IDFrequencyPower
    1LockedATDMA117600000 Hz45.5 dBmV
    2LockedATDMA224000000 Hz45.5 dBmV
    3LockedATDMA330400000 Hz46.0 dBmV
    4LockedATDMA436800000 Hz45.8 dBmV
    5Not LockedUnknown00 Hz0.0 dBmV
    6Not LockedUnknown00 Hz0.0 dBmV
    7Not LockedUnknown00 Hz0.0 dBmV
    8Not LockedUnknown00 Hz0.0 dBmV
    <tabindex=-1>Downstream OFDM Channels</tabindex=-1>
    ChannelLock StatusModulation / Profile IDChannel IDFrequencyPowerSNR / MERActive Subcarrier Number RangeUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
    1Locked0, 1, 2, 3159300000000 Hz15.3 dBmV42.3 dB296 ~ 78951302738183964244395
    2Locked0, 1, 2, 3160918000000 Hz13.4 dBmV41.0 dB1108 ~ 2987375764566917188285
    <tabindex=-1>Upstream OFDMA Channels</tabindex=-1>
    ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
    1Not Locked3, 4, 9, 10, 11, 12, 13636800000 Hz40.8 dBmV
    2Not Locked3, 4, 9, 10, 11, 12, 1300 Hz0.0 dBmV
  • sdchris's avatar
    sdchris
    Aspirant
    May 05, 2023

    Here is the latest log:

    Time

    		PriorityDescription
    2023-05-05, 09:27:53Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 160; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:33Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159 160; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:32Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:28Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:27Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159 160; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:26Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:25Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159 160; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 3.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:19Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:16Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:16Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:27:16Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:26:54Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:26:27Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:57Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:57Warning (5)Dynamic Range Window violation
    2023-05-05, 09:21:57Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:54Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:53Notice (6)CM-STATUS message sent. Event Type Code: 3; Chan ID: N/A; DSID: �; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:52Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:52Warning (5)Unicast DSID PSN startup error
    2023-05-05, 09:21:52Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:21:52Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:52Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:52Warning (5)Dynamic Range Window violation
    2023-05-05, 09:20:52Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:52Warning (5)Dynamic Range Window violation
    2023-05-05, 09:20:52Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:52Warning (5)Dynamic Range Window violation
    2023-05-05, 09:20:52Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:52Warning (5)Dynamic Range Window violation
    2023-05-05, 09:20:52Warning (5)RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:52Warning (5)Dynamic Range Window violation
    2023-05-05, 09:20:52Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:47Notice (6)DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:46Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:41Notice (6)TLV-11 - unrecognized OID;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    2023-05-05, 09:20:40Warning (5)DHCP WARNING - Non-critical field invalid in response ;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv4
    Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
    Time Not EstablishedCritical (3)UCD invalid or channel unusable;CM-MAC=XXX;CM-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;
  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    May 05, 2023

    Power levels are way too high:

    https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

     

    Any Criticals, Errors or Warnings needs to be reviewed by the ISP and resolved and power turned down up to the modem:

     

     

    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://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
    https://highspeed.tips/docsis-events/

    • sdchris's avatar
      sdchris
      Aspirant
      May 09, 2023

      A cox tech was able to come out and reduce the signal. Thanks for everyone's suggestions.