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dre7702's avatar
dre7702
Aspirant
Jul 09, 2016

CM500

I am paying for 200 mbps. My CM500 cable modem is only giving less than 90 mbps download hardwired.  I have reset the modem and have been told by ISP everything looks good on their end.  This is my second unit from NETGEAR because they determined the previous one is defective.  I was getting more mbps from the "defective" modem but no more than 95 mbps.  I feel like I am missing something, but not sure what.  Are there some settings that can be tweaked to get me the 200mbps? Please help.  Thanks

Troubleshooting

2 Replies

  • dre7702's avatar
    dre7702
    Aspirant
    Jul 09, 2016
    Time Priority Description 1970-1-1, 00:00:20 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:46 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:46 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:51 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:14:f1:e6:b4:e2;CM-QOS=1.0;CM-VER=3.0; 1970-1-1, 00:00:57 Notice (6) Honoring MDD; IP provisioning mode = IPv4 1970-1-1, 00:00:59 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:14:f1:e6:b4:e2;CM-QOS=1.0;CM-VER=3.0; 2016-7-8, 19:25:05 Error (4) Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:14:f1:e6:b4:e2;CM-QOS=1.1;CM-VER=3.0; 2016-7-8, 19:25:05 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:14:f1:e6:b4:e2;CM-QOS=1.1;CM-VER=3.0; 2016-7-8, 19:25:53 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=dc:ef:09:7d:e8:d0;CMTS-MAC=00:14:f1:e6:b4:e2;CM-QOS=1.1;CM-VER=3.0;
    • DarrenM's avatar
      DarrenM
      Sr. NETGEAR Moderator
      Jul 13, 2016

      Hello dre7702

       

      I am seeing some T3 an T4 timeouts in the logs which means its having issues receiving signal from the cable do you happen to have any type of splitters on the cable lines if so try removing them. If not you may want to have a cable tech out to check everything. I left a link on what the Timeouts mean.

       

      http://volpefirm.com/docsis_timout_descriptions/

       

      DarrenM