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SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing Not 300Mbps

astobie
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‎05-21-2020 05:32 PM

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing Not 300Mbps

So so I'm looking at my Arris 8200 modem and I'm looking at the values and it appears that the upstream may be off.

 

I have these values 

Procedure Status Comment
Acquire Downstream Channel 651000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK  
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed  

 

 
Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
33 Locked QAM256 651000000 Hz 1.6 dBmV 38.4 dB 0 0
9 Locked QAM256 507000000 Hz 5.0 dBmV 41.2 dB 0 0
10 Locked QAM256 513000000 Hz 5.1 dBmV 41.1 dB 0 0
11 Locked QAM256 519000000 Hz 5.1 dBmV 41.1 dB 0 0
12 Locked QAM256 525000000 Hz 5.0 dBmV 41.0 dB 0 0
13 Locked QAM256 531000000 Hz 4.7 dBmV 40.9 dB 0 0
14 Locked QAM256 537000000 Hz 4.6 dBmV 40.8 dB 0 0
15 Locked QAM256 543000000 Hz 4.7 dBmV 40.8 dB 0 0
16 Locked QAM256 549000000 Hz 4.7 dBmV 40.8 dB 0 0
17 Locked QAM256 555000000 Hz 4.6 dBmV 40.6 dB 0 0
18 Locked QAM256 561000000 Hz 4.6 dBmV 40.6 dB 0 0
19 Locked QAM256 567000000 Hz 4.6 dBmV 40.6 dB 0 0
20 Locked QAM256 573000000 Hz 4.3 dBmV 40.4 dB 0 0
21 Locked QAM256 579000000 Hz 4.1 dBmV 40.3 dB 0 0
22 Locked QAM256 585000000 Hz 3.9 dBmV 40.3 dB 0 0
23 Locked QAM256 591000000 Hz 3.8 dBmV 40.0 dB 0 0
24 Locked QAM256 597000000 Hz 3.7 dBmV 39.9 dB 0 0
25 Locked QAM256 603000000 Hz 3.5 dBmV 39.9 dB 0 0
26 Locked QAM256 609000000 Hz 2.9 dBmV 39.4 dB 0 0
27 Locked QAM256 615000000 Hz 2.8 dBmV 39.4 dB 0 0
28 Locked QAM256 621000000 Hz 3.2 dBmV 39.4 dB 0 0
29 Locked QAM256 627000000 Hz 2.6 dBmV 39.1 dB 0 0
30 Locked QAM256 633000000 Hz 2.1 dBmV 38.8 dB 0 0
31 Locked QAM256 639000000 Hz 2.3 dBmV 38.9 dB 0 0
32 Locked QAM256 645000000 Hz 1.9 dBmV 38.6 dB 0 0
34 Locked QAM256 657000000 Hz 1.7 dBmV 38.4 dB 0 0
35 Locked QAM256 663000000 Hz 1.3 dBmV 38.2 dB 0 0
36 Locked QAM256 669000000 Hz 1.1 dBmV 38.1 dB 0 0
37 Locked QAM256 675000000 Hz 1.4 dBmV 37.6 dB 0 0
38 Locked QAM256 681000000 Hz 0.8 dBmV 37.7 dB 0 0
39 Locked QAM256 687000000 Hz 0.8 dBmV 37.7 dB 0 0
40 Locked QAM256 693000000 Hz 1.2 dBmV 38.0 dB 0 0
159 Locked Other 702000000 Hz 1.8 dBmV 36.0 dB 12383338 0


 

 
Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 2 Locked SC-QAM Upstream 30100000 Hz 6400000 Hz 42.0 dBmV
2 1 Locked SC-QAM Upstream 36500000 Hz 6400000 Hz 42.0 dBmV
3 3 Locked SC-QAM Upstream 23700000 Hz 6400000 Hz 41.0 dBmV
4 4 Locked SC-QAM Upstream 17300000 Hz 6400000 Hz 41.0 dBmV

 
Even connected directly I have never gotten more than AT MOST 180 Mbps and sometimes as low as 1.2 Mbps. I am supposed to be getting up to 300...

 

I'm getting this in the logs

 

01/01/1970 00:00 2436694066 6 "Honoring MDD; IP provisioning mode = IPv6"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
05/21/2020 14:25 2436694044 3 "Resetting the cable modem due to docsDevResetNow"
05/21/2020 12:35 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
05/15/2020 10:36 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
05/10/2020 16:48 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
05/07/2020 17:07 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
05/05/2020 18:46 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
04/30/2020 18:33 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 17:05 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:09 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:33 82000400 3 "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:33 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:33 82000400 3 "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:33 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:33 82000400 3 "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:33 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"
04/13/2020 13:32 82000400 3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=18:9c:27:f9:d4:39;CMTS-MAC=0c:11:67:02:65:5f;CM-QOS=1.1;CM-VER=3.1;"

 

 

 

 

 
       
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