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Davejp's avatar
Davejp
Tutor
Oct 05, 2019

cm1000 keeps rebooting

CM1000, Firmware Version V5.01.04, Windows 10

I started getting the following event log errors yesterday.  Modem kept restarting.  Seems to have cleared itself this morning? anyone have an idea what these are?

 

2019-10-04, 21:46:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:f4:28:e0;CMTS-MAC=84:8a:8d:32:2b:1f;CM-QOS=1.1;CM-VER=3.1;

Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:f4:28:e0;CMTS-MAC=84:8a:8d:32:2b:1f;CM-QOS=1.1;CM-VER=3.1;

Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:f4:28:e0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

8 Replies

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User

    Contact your ISP and have them check signals up to the modem.

    Be sure there are no coax cable line splitters in between the ISP service box and the modem.


    Davejp wrote:

    CM1000, Firmware Version V5.01.04, Windows 10

    I started getting the following event log errors yesterday.  Modem kept restarting.  Seems to have cleared itself this morning? anyone have an idea what these are?

     

    2019-10-04, 21:46:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:f4:28:e0;CMTS-MAC=84:8a:8d:32:2b:1f;CM-QOS=1.1;CM-VER=3.1;

    Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=14:59:c0:f4:28:e0;CMTS-MAC=84:8a:8d:32:2b:1f;CM-QOS=1.1;CM-VER=3.1;

    Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:f4:28:e0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;


     

    • Crazytekkie's avatar
      Crazytekkie
      Aspirant
      Actually your is has nothing to do with it rebooting constantly. Mine is doing it also but I can tell you for sure, you should be able to completely disconnect your cable altogether and still be able to log in to the router without it rebooting and with cable completely disconnected.
  • Mine started rebooting this afternoon. It reboots about every 2min 40 secs... Rediculous, nothing the ISP can help with.
    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User

      Contact your ISP and have them check signals up to the modem.

      Be sure there are no coax cable line splitters in between the ISP service box and the modem.

      Be sure your using good quality RG6 cabling up to the modem.

      Factory reset the modem. 


      elmachin wrote:
      Mine started rebooting this afternoon. It reboots about every 2min 40 secs... Rediculous, nothing the ISP can help with.

       

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User

      Any progress on this? :smileyembarrassed:


      elmachin wrote:
      Mine started rebooting this afternoon. It reboots about every 2min 40 secs... Rediculous, nothing the ISP can help with.

       

      • Crazytekkie's avatar
        Crazytekkie
        Aspirant
        Yep exactly what mine is doing...btw meant to say modem not router on my last post.