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jf6791's avatar
jf6791
Guide
Dec 18, 2023

CM1200 Modem Log has same single entry all the time

We've been troubleshooting network dropout issues and trying to glean some info from the modem log.  The problem is every time it is accessed the same entry exists "Started Unicast Maintenance Ranging - No Response received - T3 time-out;" with the time stamp a few seconds before logging into modem.  If you clear the log and exit/log back in the same single entry is there again with time stamp of latest log in.  The firmware is V3.12.03.  Have tried rebooting without any change.  I remember this log actually showing multiple time stamped entries in past but now apparently something is clearing it automatically.

5 Replies

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

    Has a factory reset been performed on the modem with out the ISP coax cable connected to the modem?

     

    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

     

    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. 
    What is the brand and model of the host wifi router connected to the modem?

    • jf6791's avatar
      jf6791
      Guide
      Dec 26, 2023

      So after a factory reset the logs are back to normal - as far as retaining older entries.  Screenshots of levels and logs are below.  The router is an RAXE500.

      ProcedureStatusComment
      Acquire Downstream Channel603000000 HzLocked
      Connectivity StateOKOperational
      Boot StateOKOperational
      SecurityEnabledBPI+
      IP Provisioning ModeHonor MDDhonorMdd(4)
       
      Downstream Bonded Channels
      ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
      1LockedQAM25629603000000 Hz4 dBmV43.2 dB00
      2LockedQAM25613507000000 Hz3 dBmV43.1 dB00
      3LockedQAM25614513000000 Hz3 dBmV43.1 dB00
      4LockedQAM25615519000000 Hz2.7 dBmV43 dB00
      5LockedQAM25616525000000 Hz3.1 dBmV43.1 dB00
      6LockedQAM25617531000000 Hz3.2 dBmV43.1 dB00
      7LockedQAM25618537000000 Hz3 dBmV43 dB00
      8LockedQAM25619543000000 Hz2.8 dBmV43 dB00
      9LockedQAM25620549000000 Hz2.7 dBmV42.9 dB00
      10LockedQAM25621555000000 Hz2.8 dBmV42.9 dB00
      11LockedQAM25622561000000 Hz3 dBmV42.9 dB00
      12LockedQAM25623567000000 Hz3.4 dBmV43.1 dB00
      13LockedQAM25624573000000 Hz3.4 dBmV43.1 dB00
      14LockedQAM25625579000000 Hz3.5 dBmV43.1 dB00
      15LockedQAM25626585000000 Hz3.6 dBmV43.1 dB00
      16LockedQAM25627591000000 Hz3.7 dBmV43.2 dB00
      17LockedQAM25628597000000 Hz3.7 dBmV43.2 dB00
      18LockedQAM25630609000000 Hz3.9 dBmV42.9 dB00
      19LockedQAM25631615000000 Hz3.7 dBmV42.8 dB00
      20LockedQAM25632621000000 Hz4.2 dBmV43.1 dB00
      21LockedQAM25633627000000 Hz4.2 dBmV43.1 dB00
      22LockedQAM25634633000000 Hz3.9 dBmV43 dB00
      23LockedQAM25635639000000 Hz3.8 dBmV42.9 dB00
      24LockedQAM25636645000000 Hz3.8 dBmV42.9 dB00
      25LockedQAM25637651000000 Hz3.5 dBmV42.7 dB00
      26LockedQAM25638657000000 Hz3.1 dBmV42.6 dB00
      27LockedQAM25639663000000 Hz2 dBmV41.9 dB00
      28LockedQAM25640669000000 Hz1.4 dBmV41.6 dB00
      29LockedQAM25641675000000 Hz2.5 dBmV41.7 dB00
      30LockedQAM25642681000000 Hz3.1 dBmV42.9 dB00
      31LockedQAM25643687000000 Hz3.5 dBmV43 dB00
      32LockedQAM25644693000000 Hz3.4 dBmV43 dB00
       
      Upstream Bonded Channels
      ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
      1LockedATDMA25120 Ksym/sec16400000 Hz50.3 dBmV
      2LockedATDMA35120 Ksym/sec22800000 Hz50.3 dBmV
      3LockedATDMA45120 Ksym/sec29200000 Hz49.8 dBmV
      4LockedATDMA55120 Ksym/sec35600000 Hz49.8 dBmV
      5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
      6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
      7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
      8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
       
      Downstream OFDM Channels
      ChannelLock
      Status      		Modulation /
      Profile ID      		Channel
      ID      		FrequencyPowerSNR /
      MER      		Active Subcarrier
      Number Range      		Unerrored
      Codewords      		Correctable
      Codewords      		Uncorrectable
      Codewords
      1Locked0 ,1 ,2 ,3159702000000 Hz4.9 dBmV43.2 dB1126 ~ 2969336941441616590
      2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
       
      Upstream OFDMA Channels
      ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
      1Not Locked000 Hz0 dBmV
      2Not Locked000 Hz0 dBmV
       
      Extended Upstream Transmit Power
      Enable Extended Upstream Transmit Power
       
      Current System Time:Tue Dec 26 21:02:09 2023
      System Up Time:02:49:32
       
       
             Clear Log                Refresh        
       
       
       
       
      TimePriorityDescription
      Tue Dec 26 20:36:59 2023Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
      Tue Dec 26 18:25:34 2023Notice (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=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
      Tue Dec 26 18:25:30 2023Warning (5)DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=;CMTS-MAC=;CM-QOS=1.1;CM-VER=3.1;
      Tue Dec 26 18:25:30 2023Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=28:80:88:b3:96:68;CMTS-MAC=04:2a:e2:c7:7c:ed;CM-QOS=1.1;CM-VER=3.1;
      Tue Dec 26 18:19:45 2023Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=;CMTS-MAC;CM-QOS=1.1;CM-VER=3.1;