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kylewburns's avatar
kylewburns
Aspirant
Apr 20, 2018

Netgear C7000-100NAS relentless T3 Time-outs and rebooting

About 2 months ago, my Netgear C7000-100NAS started having at least 5 reboots a day (sometimes up to a dozen times a day!!). Error logs read T3 timeouts relentlessly. Firmware Version V1.01.28

There are no splitters, I'm running directly to the wall. I had Comcast techs come out and they said everything looks good, strong signals, etc., and suggested it might be the modem/router having troubles. So I'm stuck between an ISP and a modem manufacturer. Can someone PLEASE help, I work from home and rely on a consistent connection, and am not getting it.

 

Here is the most recent log (after recently be cleared FYI, but just imagine T3 error logs 5-12 times a day):

  

TimePriorityDescription
1970-1-1, 00:00:38Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:46Critical (3)No Ranging Response received - T3 time-out;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:01:5c:67:64:79;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:37Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:44Critical (3)No Ranging Response received - T3 time-out;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:01:5c:67:64:79;CM-QOS=1.0;CM-VER=3.0;
2018-4-20, 06:17:18Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:01:5c:67:64:79;CM-QOS=1.1;CM-VER=3.0;
1970-1-1, 00:00:38Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:45Critical (3)No Ranging Response received - T3 time-out;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:01:5c:67:64:79;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:37Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:44Critical (3)No Ranging Response received - T3 time-out;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:01:5c:67:64:79;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:37Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:40Notice (6)WiFi Interface [wl0] set to Channel 6 (Side-Band Channel:N/A) - Reason:INIT
1970-1-1, 00:00:40Notice (6)WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
1970-1-1, 00:00:45Notice (6)Honoring MDD; IP provisioning mode = IPv6
2018-4-20, 16:18:44Notice (6)WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INTERFERENCE
2018-4-20, 16:21:28Warning (5)MDD message timeout;CM-MAC=********I'M HIDING MAC ADDRESS***********;CMTS-MAC=00:01:5c:67:64:79;CM-QOS=1.1;CM-VER=3.0;

 

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM2561465000000 Hz4.8 dBmV39.7 dB00
2LockedQAM2562471000000 Hz4.8 dBmV39.7 dB00
3LockedQAM2563477000000 Hz4.9 dBmV39.8 dB00
4LockedQAM2564483000000 Hz4.9 dBmV39.7 dB00
5LockedQAM2565489000000 Hz4.9 dBmV39.7 dB00
6LockedQAM2566495000000 Hz5 dBmV39.7 dB00
7LockedQAM2567507000000 Hz5.1 dBmV39.1 dB00
8LockedQAM2568513000000 Hz4.8 dBmV39.5 dB00
9LockedQAM2569519000000 Hz5.2 dBmV39.7 dB00
10LockedQAM25610525000000 Hz5.1 dBmV39.6 dB00
11LockedQAM25611531000000 Hz5 dBmV39.6 dB00
12LockedQAM25612537000000 Hz5.1 dBmV39.6 dB00
13LockedQAM25613543000000 Hz5 dBmV39.6 dB00
14LockedQAM25614549000000 Hz5.2 dBmV39.6 dB00
15LockedQAM25615555000000 Hz4.9 dBmV39.5 dB00
16LockedQAM25616561000000 Hz5.1 dBmV39.5 dB00
17LockedQAM25617567000000 Hz4.8 dBmV40.3 dB00
18LockedQAM25618573000000 Hz4.6 dBmV40.3 dB00
19LockedQAM25619579000000 Hz4.7 dBmV40.4 dB00
20LockedQAM25625615000000 Hz4.5 dBmV39.7 dB00
21LockedQAM25626621000000 Hz4.5 dBmV39.9 dB00
22LockedQAM25627627000000 Hz4.2 dBmV39.8 dB00
23LockedQAM25628633000000 Hz4.2 dBmV39.5 dB00
24LockedQAM25631645000000 Hz4.2 dBmV39.8 dB00

 

Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA775120 Ksym/sec36800000 Hz47.5 dBmV
2LockedATDMA785120 Ksym/sec30400000 Hz47.3 dBmV
3LockedATDMA795120 Ksym/sec24000000 Hz47 dBmV
4LockedATDMA805120 Ksym/sec17600000 Hz47 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
Hardware
Troubleshooting

7 Replies

      • vkdelta's avatar
        vkdelta
        NETGEAR Employee Retired
        Apr 21, 2018

        right where you found "event logs" .. there would be another option on left hand column for "logs" and they will have all the network logs showing if Internet disconnected or not.