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CM500 Modem is showing errors - log shows critical errors

geearias
Aspirant

CM500 Modem is showing errors - log shows critical errors

Can someone help me explain these critical errors and time outs?Screenshot 2021-01-20 104652.png

Model: CM500-1AZNAS|High Speed Cable Modem—DOCSIS 3.0
Message 1 of 5
geearias
Aspirant

Re: CM500 Modem is showing errors - log shows critical errors

It's not letting me upload my screenshot but here's a summary of today's errors:

 

TimePriorityDescription
2021-1-20, 09:30:04Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:02:d2:60;CMTS-MAC=00:90:f0:54:09:00;CM-QOS=1.1;CM-VER=3.0;
1970-1-1, 00:00:38Notice (6)Honoring MDD; IP provisioning mode = IPv6
1970-1-1, 00:00:21Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=3c:37:86:02:d2:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2021-1-20, 09:19:48Critical (3)SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;CM-MAC=3c:37:86:02:d2:60;CMTS-MAC=00:90:f0:54:09:00;CM-QOS=1.1;CM-VER=3.0;
2021-1-20, 09:18:23Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:02:d2:60;CMTS-MAC=00:90:f0:54:09:00;CM-QOS=1.1;CM-VER=3.0;
2021-1-20, 09:16:32Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:02:d2:60;CMTS-MAC=00:90:f0:54:09:00;CM-QOS=1.1;CM-VER=3.0;
Message 2 of 5
plemans
Guru

Re: CM500 Modem is showing errors - log shows critical errors

Do you have a snip of the cable connections page ?

Current setup: CM2000-> RBKE963B-> Trendnet TEG-S380-> GS716T-> pi-hole
also in AP setup: RAXE500->EAX80
1.4gig download/50mbps upload from Xfinity
We’re members of the public helping out on our own time.
Message 3 of 5
geearias
Aspirant

Re: CM500 Modem is showing errors - log shows critical errors

Thanks for your reponse. Here's what I see:

 

Startup Procedure
ProcedureStatusComment
Acquire Downstream Channel507000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnabledBPI+
IP Provisioning ModeHonor MDDhonorMdd(4)

 

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM2564507000000 Hz0.6 dBmV42.9 dB00
2LockedQAM2561489000000 Hz0.9 dBmV45.9 dB00
3LockedQAM2562495000000 Hz0.8 dBmV45.7 dB00
4LockedQAM2563501000000 Hz0.7 dBmV44.8 dB00
5LockedQAM2565513000000 Hz0.6 dBmV45.3 dB00
6LockedQAM2566519000000 Hz0.6 dBmV44.6 dB00
7LockedQAM2567525000000 Hz0.7 dBmV44.9 dB00
8LockedQAM2568531000000 Hz1 dBmV45.6 dB00
9LockedQAM2569537000000 Hz1.1 dBmV44.4 dB00
10LockedQAM25610543000000 Hz1.2 dBmV45.1 dB00
11LockedQAM25611549000000 Hz1.2 dBmV45.7 dB00
12LockedQAM25612555000000 Hz1.1 dBmV45.5 dB00
13LockedQAM25613561000000 Hz1 dBmV45.6 dB00
14LockedQAM25614567000000 Hz1 dBmV44.9 dB00
15LockedQAM25615573000000 Hz0.9 dBmV44.9 dB00
16LockedQAM25616579000000 Hz1 dBmV44.2 dB00
 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA15120 Ksym/sec38800000 Hz41.3 dBmV
2LockedATDMA25120 Ksym/sec32400000 Hz41 dBmV
3LockedATDMA35120 Ksym/sec26000000 Hz39.7 dBmV
4LockedATDMA45120 Ksym/sec19600000 Hz40 dBmV
Message 4 of 5
plemans
Guru

Re: CM500 Modem is showing errors - log shows critical errors

Your power levels are spot on. And you tend to get those errors when  you first boot up your modem. 

 

If you continue to get those errors repeatedly after using it for a period of time, repost the logs and the cable connections page. 

 

Are you having an issue? 

Current setup: CM2000-> RBKE963B-> Trendnet TEG-S380-> GS716T-> pi-hole
also in AP setup: RAXE500->EAX80
1.4gig download/50mbps upload from Xfinity
We’re members of the public helping out on our own time.
Message 5 of 5
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