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Mattst's avatar
Mattst
Aspirant
Jan 11, 2017

N450 CG3000Dv2 dropping wired and wireless connection repeatedly

A few days ago I started losing my connection from my N450 CG3000Dv2 modem/router.  This occurs on both a hard-wired (gigabit) connection to the router and on other devices connected wirelessly.  I contacted Comcast support the first time this happened and they sent refresh signals to the router (which hasn't helped).  On the next call to Comcast, they said everything looked good on their end and that I'd need to contact Netgear.

 

Is there any diagnostic I can run locally in order to determine if the router itself is failing?  It's not quite 3 years old, but I've had routers before that dropped connections like this and I'm not sure if they lasted more than 3 years either.

 

thanks,

Matt

disconnects
Dropping Connection
Troubleshooting

7 Replies

  • DarrenM's avatar
    DarrenM
    Sr. NETGEAR Moderator
    Jan 13, 2017

    Hello Mattst

     

    You could post the logs when it happens you can find them in the settings under Maintenance and then event log. This may tell us what is happening.

     

    DarrenM

    • Mattst's avatar
      Mattst
      Aspirant
      Jan 13, 2017

      Thanks.  Here's the log:

       

      Time Priority Description
      2017-01-12, 01:33:52.0 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      2017-01-12, 01:33:23.0 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      2017-01-12, 01:30:34.0 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      2017-01-12, 01:25:45.0 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.1;CM-VER=3.0;
      2017-01-12, 01:23:42.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.1;CM-VER=3.0;
      2017-01-12, 01:21:55.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.1;CM-VER=3.0;
      2017-01-12, 01:21:49.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.1;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=my:ff:ff:ff:ff:my;CMTS-MAC=00:01:02:02:03:03;CM-QOS=1.0;CM-VER=3.0;
      Time Not Established Notice (6) WiFi Interface [wl0] set to Channel 3 (Side-Band Channel:N/A) - Reason:INIT