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billcsfps
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Wednesday, August 5th, 2020 10:00 AM

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My daily internet connection loss

I have been having weekday internet outages around noon almost every weekday. This is not great now that I have to work from home. I have contacted Comcast support and everytime they reset the modem and everyday the internet service comes back...until next time. The tech support always says the levels look good and thats all they can "see" and the problem is my equipment. I have my doubts since all I need to do to correct the issue myself is unplug the coax from the SB6183 modem and plug it back in and presto, internet is working again. Here are the details from my modem. Any ideas on a real solution will be greatly appreciated!

 

Mon Aug 03 20:52:56 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Mon Aug 03 20:52:56 2020Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Mon Aug 03 20:52:56 2020Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 12:43:57 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:15:54 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:16:01 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:18:16 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:18:17 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:18:28 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:18:28 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:18:53 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:18:53 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:19:38 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:19:38 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Tue Aug 04 15:19:41 2020Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Wed Aug 05 09:09:53 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Wed Aug 05 09:14:13 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;
Time Not EstablishedNotice (6)Ds Lock Failed - Reinitialize MAC...
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedNotice (6)Ds Lock Failed - Reinitialize MAC...
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Wed Aug 05 10:07:44 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=78:96:84:e5:9e:a9;CMTS-MAC=00:01:5c:6e:2c:56;CM-QOS=1.1;CM-VER=3.0;

 

 

 

Startup Procedure

ProcedureStatusComment
Acquire Downstream Channel Locked
Connectivity StateOKOperational
Boot StateOKOperational
Configuration FileOK 
SecurityEnabledBPI+
DOCSIS Network Access EnabledAllowed 

 

 
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectedUncorrectables
1LockedQAM25638423000000 Hz2.2 dBmV41.1 dB37551626
2LockedQAM25639429000000 Hz2.9 dBmV41.4 dB50182
3LockedQAM25640435000000 Hz2.1 dBmV41.0 dB18101
4LockedQAM25641441000000 Hz2.5 dBmV41.0 dB46213
5LockedQAM2561447000000 Hz2.5 dBmV41.0 dB1071
6LockedQAM2562453000000 Hz2.1 dBmV40.7 dB964
7LockedQAM2563459000000 Hz2.4 dBmV40.9 dB22111
8LockedQAM2564465000000 Hz2.0 dBmV40.6 dB46113
9LockedQAM2565471000000 Hz2.5 dBmV40.8 dB57210
10LockedQAM2566477000000 Hz1.9 dBmV40.5 dB1888
11LockedQAM2567483000000 Hz1.7 dBmV40.2 dB4191
12LockedQAM2568489000000 Hz2.2 dBmV40.5 dB4519
13LockedQAM2569495000000 Hz1.6 dBmV40.3 dB29102
14LockedQAM25610507000000 Hz1.9 dBmV39.2 dB1396
15LockedQAM25611513000000 Hz1.6 dBmV40.3 dB1558
16LockedQAM25612519000000 Hz1.8 dBmV40.3 dB2482

 

 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA45120 Ksym/sec16400000 Hz41.5 dBmV
2LockedATDMA15120 Ksym/sec35600000 Hz41.0 dBmV
3LockedATDMA25120 Ksym/sec29200000 Hz41.8 dBmV
4LockedATDMA35120 Ksym/sec22800000 Hz41.5 dBmV

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