Participant

Signal Levels - Errors - Elevated numbers/Event errors - Assessment?

Hi there,

 

For the last few months, my signal levels have showed a consistently elevated levels of corrected/uncorrected errors.  There is consistency across all 16 downstream channels, both in corrected and uncorrected metrics.  Earlier in the year, I was only getting elevated uncorrected errors in two of 16 downstream channels, but this recent change across all 16 channels have only been in the last 2-3 months.  Please see signal levels below.

 

My event logs have showed some T3 errors, but no T4s, but other critical timing/sync errors throughout the last couple weeks.  Event long also below.  Despite these occurances, I have not noticed any significant down time or bandwidth impacts.  Speed tests are consistent range for base 100/10 profile.  Latency appears good during speed tests and trace route tests.  I do reset my router here and there when my wifi device assignments get flaky with some of my household devices.  Aside from that, nothing too serious yet, but I'd like to make sure that this doesn't become a cascading issue in months ahead.

 

Any insight would be helpful.  I have NOT been able to take time to data log if these errors are more prevalent during certain times of the day, but generally did notice that after a modem reboot to clear errors, I would see levels (as below) accrue relatively quickly, within a couple/few days.

 

Thanks again!

 

 

Startup Procedure

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

 
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectedUncorrectables
1LockedQAM2562633000000 Hz3.2 dBmV38.3 dB40086909
2LockedQAM2561627000000 Hz3.5 dBmV38.4 dB35066625
3LockedQAM2566657000000 Hz2.6 dBmV37.9 dB39457274
4LockedQAM2563639000000 Hz3.4 dBmV38.3 dB62947746
5LockedQAM25610681000000 Hz0.1 dBmV36.0 dB54427556
6LockedQAM2565651000000 Hz2.7 dBmV37.9 dB48747559
7LockedQAM2567663000000 Hz1.9 dBmV37.3 dB40127209
8LockedQAM25613699000000 Hz1.5 dBmV37.0 dB39366880
9LockedQAM25617723000000 Hz3.5 dBmV37.9 dB37637338
10LockedQAM25618729000000 Hz3.9 dBmV38.2 dB37216978
11LockedQAM2568669000000 Hz1.3 dBmV36.9 dB37527209
12LockedQAM25620741000000 Hz3.7 dBmV38.2 dB33266788
13LockedQAM25621747000000 Hz3.7 dBmV38.2 dB35947122
14LockedQAM25614705000000 Hz2.1 dBmV37.2 dB37977792
15LockedQAM25615711000000 Hz2.9 dBmV37.7 dB40567431
16LockedQAM25624765000000 Hz3.7 dBmV38.1 dB38017387

 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA355120 Ksym/sec30600000 Hz39.0 dBmV
2LockedTDMA332560 Ksym/sec19400000 Hz38.0 dBmV
3LockedATDMA345120 Ksym/sec24200000 Hz38.3 dBmV
4LockedATDMA362560 Ksym/sec37000000 Hz39.3 dBmV


 

Current System Time: Sun Oct 28 09:06:53 2018

 

 

Time Priority Description
Fri Oct 26 11:48:34 2018Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sat Oct 20 20:36:04 2018Notice (6)TLV-11 - unrecognized OID;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sat Oct 20 20:36:03 2018Error (4)Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sat Oct 20 20:36:03 2018Error (4)Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Time Not EstablishedNotice (6)Overriding MDD IP initialization parameters; IP provisioning mode = IPv6
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sun Oct 21 01:23:13 2018Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sun Oct 21 01:23:10 2018Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sun Oct 21 01:23:10 2018Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sun Oct 21 01:23:08 2018Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sun Oct 21 01:23:08 2018Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sun Oct 21 01:22:58 2018Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sun Oct 21 01:22:58 2018Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sun Oct 21 01:22:44 2018Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sat Oct 13 04:04:29 2018Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Wed Sep 26 21:12:07 2018Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Sat Sep 15 22:51:36 2018Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Tue Sep 04 20:43:24 2018Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Thu Aug 30 06:24:17 2018Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.1;CM-VER=3.0;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out
Time Not EstablishedCritical (3)No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out
Time Not EstablishedCritical (3)No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=6c:ca:08:72:76:be;CMTS-MAC=00:01:5c:7c:aa:56;CM-QOS=1.0;CM-VER=3.0;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;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=6c:ca:08:72:76:be;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;

 

 

1 REPLY
Helper

Re: Signal Levels - Errors - Elevated numbers/Event errors - Assessment?

Check everywhere that you have access to for loose or corroded connection ends, damaged coax, or any other obvious signs of damage. Check behind the wall plates as well. The downstream power levels fluctuate quite a bit from one channel to the next.

 

Can you describe how things are connected from the main drop line? Splitters, amps, etc?