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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 Rangin...
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;