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Badcorgi's avatar
Badcorgi
Tutor
Sep 23, 2020

Modem Connection Drop

Just upgraded to Xfinity Gig internet speed. Bought a CM1150V modem to accomodate 1gbps speed and replaced my Arris Surfboard. Install of CM1150V was long and difficult but Xfinity finally recognized...
Badcorgi's avatar
Badcorgi
Tutor
Sep 23, 2020

I do.  Please see below:

 

plemans's avatar
plemans
Guru - Experienced User
Sep 23, 2020

do you also have the cable connections page?

  • Badcorgi's avatar
    Badcorgi
    Tutor
    Sep 23, 2020
    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

    ProcedureStatusComment
    Acquire Downstream Channel591000000 HzLocked
    Connectivity StateOKOperational
    Boot StateOKOperational
    SecurityEnabledBPI+
    IP Provisioning ModeHonor MDDhonorMdd(4)
     

    Downstream Bonded Channels

    ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
    1LockedQAM25620591000000 Hz3.3 dBmV43.2 dB00
    2LockedQAM2568519000000 Hz3.5 dBmV43.5 dB10
    3LockedQAM2569525000000 Hz3.4 dBmV43.5 dB10
    4LockedQAM25610531000000 Hz3.6 dBmV43.6 dB30
    5LockedQAM25611537000000 Hz3.6 dBmV43.6 dB10
    6LockedQAM25612543000000 Hz3.5 dBmV43.5 dB10
    7LockedQAM25613549000000 Hz3.4 dBmV43.4 dB10
    8LockedQAM25614555000000 Hz3.4 dBmV43.4 dB10
    9LockedQAM25615561000000 Hz3.4 dBmV43.4 dB00
    10LockedQAM25616567000000 Hz3.2 dBmV43.3 dB20
    11LockedQAM25617573000000 Hz3.2 dBmV43.3 dB10
    12LockedQAM25618579000000 Hz3.2 dBmV43.3 dB00
    13LockedQAM25619585000000 Hz3.3 dBmV43.2 dB10
    14LockedQAM25621597000000 Hz3.3 dBmV43.1 dB20
    15LockedQAM25622603000000 Hz3.5 dBmV43.2 dB00
    16LockedQAM25623609000000 Hz3.6 dBmV43.2 dB00
    17LockedQAM25624615000000 Hz3.5 dBmV43.1 dB00
    18LockedQAM25625621000000 Hz3.4 dBmV42.9 dB00
    19LockedQAM25626627000000 Hz3.3 dBmV42.8 dB00
    20LockedQAM25627633000000 Hz3.5 dBmV42.9 dB00
    21LockedQAM25628639000000 Hz3.5 dBmV42.9 dB10
    22LockedQAM25629645000000 Hz3.6 dBmV43 dB00
    23LockedQAM25630651000000 Hz3.7 dBmV43.1 dB00
    24LockedQAM25631657000000 Hz3.5 dBmV42.9 dB00
    25LockedQAM25632663000000 Hz3.5 dBmV42.9 dB00
    26LockedQAM25633669000000 Hz3.4 dBmV42.8 dB00
    27LockedQAM25634675000000 Hz3.2 dBmV42.3 dB00
    28LockedQAM25635681000000 Hz3.3 dBmV42.8 dB00
    29LockedQAM25636687000000 Hz3.5 dBmV42.9 dB00
    30LockedQAM25637693000000 Hz3.6 dBmV43 dB00
    31LockedQAM25638699000000 Hz3.5 dBmV42.9 dB00
    32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
     

    Upstream Bonded Channels

    ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
    1LockedATDMA15120 Ksym/sec17300000 Hz48 dBmV
    2LockedATDMA25120 Ksym/sec23700000 Hz49.5 dBmV
    3LockedATDMA35120 Ksym/sec30300000 Hz49.8 dBmV
    4LockedATDMA45120 Ksym/sec36700000 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 ,348850000000 Hz3.2 dBmV41.9 dB1108 ~ 29872435443181452723850
    2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
     

    Upstream OFDMA Channels

    ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
    1Not Locked000 Hz0 dBmV
    2Not Locked000 Hz0 dBmV
     

    Current System Time:Wed Sep 23 13:27:32 2020System Up Time:05:52:41

    • plemans's avatar
      plemans
      Guru - Experienced User
      Sep 24, 2020

      your power/signal levels look pretty good. and most of your logs are from initial up. 

      Are those levels while its having issues/after issues? 

      If not, post the logs/signal levels after you have the issue

      • Badcorgi's avatar
        Badcorgi
        Tutor
        Sep 24, 2020

        Thank you Plemans for your assessment. I will do that when/if (fingers crossed) it happens again.

         

        The problem usually happens in the very early morning hours (3 a.m.) and lasts until about 10 a.m.  This morning, I did a factory reset as well as a full reboot of the modem and the router.  From about 10:30 a.m. until this evening, I have been getting a glorious performance (950 mbps/40mbps).  When the new modem and new router are able to do their stuff, it is truly amazing! 

         

        I am beginning to think it may be the cable node just outside my house.  The cable guy says the coaxial cable looks to be in good shape (it was installed only 2 years ago) and it is appropriate for gig speed.  The cable node however is likely the original from 1984 when the street was built.  A work order is in for installation of a new cable line and node box.  Cable guy says this will definitely improve things with consistent performance.  I will keep you up to date.

         

        Thanks again! :)