Forum Discussion

wfp's avatar
wfp
New Contributor

Cable Modem transmission errors

Attached is my event log.  Connection to cable modem is direct single line from street (one barrel connector from box on outside of house to modem) and no splitters. Line inside house is RG6 quad cable with new connectors. This happens about one to 2 times per week where I completely lose connectivity and the modem resets.  Assistance Please?
Cable modem SB8200
Event Log
Status > Event Log

The table below contains the log of events that the SB8200 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.

TimePriorityDescription
7-8-2017, 7:56:21 Notice(6) "TLV-11 - unrecognized OID;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:42 Warning(5) "DHCP WARNING - Non-critical field invalid in response ;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:40 Notice(6) "Honoring MDD; IP provisioning mode = IPv4"
1-1-1970, 0:0:33 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
7-8-2017, 7:54:31 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
7-8-2017, 7:54:26 Critical(3) "Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
7-8-2017, 7:54:25 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
7-8-2017, 7:52:31 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
7-6-2017, 20:44:2 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
7-5-2017, 16:50:50 Critical(3) "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:50 Critical(3) "DHCP FAILED - Request sent, No response;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:33 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:42:9 Critical(3) "DHCP FAILED - Discover sent, no offer received;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:41:3 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:24:9 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:24:9 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:23:54 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:23:54 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:23:39 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:23:39 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:23:24 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:23:24 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:22:22 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-22-2017, 2:22:16 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-21-2017, 1:21:54 Critical(3) "16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-21-2017, 1:21:54 Critical(3) "Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-21-2017, 1:21:54 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-17-2017, 15:46:15 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:33 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:37 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:33 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
6-12-2017, 17:33:44 Critical(3) "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-12-2017, 17:33:44 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:72:9b:19;CMTS-MAC=00:13:5f:06:9b:8a;CM-QOS=1.1;CM-VER=3.1;"
6-12-2017, 17:33:29 Critical(3) "Received Response to Broadcast Maintenance Re

1 Reply

Sort By
Most LikedOldestNewest
Replies have been turned off for this discussion
  • ChrisL's avatar
    ChrisL
    Former Moderator
    @wfp

    I looked from here an am seeing similar events in the modem logs. If it's just a straight connection from outside it may be time to have a technician come out and take a look.