Community Forum

Is my SB8200 functioning optimally? Signal info & Event Log

Xfinity Forum Archive
About the archive project

Xfinity Forum Archive...

This is an archived section of the community.

Content in this area has been identified as outdated or irrelevant.

This change was done in an effort to make the forum easier to use and to keep only the most helpful and recent content active.

Post your questions in the Xfinity Community

Diamond Problem Solver

Re: Is my SB8200 functioning optimally? Signal info & Event Log

The stats at that moment were o/k. FWIW most of those error log entries are unhelpful and basically useless because they have the default 1970 date/time stamp so they can't really be used for troubleshooting and are invalid. The default time happens when a modem is re-booted/powercycled either deliberately by the end user or spontaneously because of connectivity / signal issues with the system and spits out a number of random errors caused by the re-boot. Makes the entries look more numerous than they really are.


Regular Visitor

Is my SB8200 functioning optimally? Signal info & Event Log

The reason I a posting this, is that I have recently starting monitoring our home alarm via internet connection, and want to be sure my connection is as good as possible to keep my monitoring online.  I was informed that my alarm lost connection over the past weekend.

 

I have had issues with disconnects in the past, but not recently.  We did have an outage somewhat recently where I believe a repair was being done upstream and things seem to have been better since.  Hopefully all is good now, but I would appreciate any input concerning my current signal levels and event log.

 

Here is my event log-

 

Time Priority Description
5-1-2018, 14:21:38 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:1:36 Notice(6) "Honoring MDD; IP provisioning mode = IPv6"
1-1-1970, 0:1:30 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:1:24 Warning(5) "ToD request sent- No Response received;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:1:22 Critical(3) "TFTP Request Retries exceeded, CM unable to register "
1-1-1970, 0:1:22 Critical(3) "TFTP failed - Request sent - No Response;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:1:7 Warning(5) "ToD request sent- No Response received;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:41 Notice(6) "Honoring MDD; IP provisioning mode = IPv6"
1-1-1970, 0:0:37 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;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:73:45:1d;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:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;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:73:45:1d;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:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;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:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
4-25-2018, 2:36:16 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;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:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:32 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:31 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:31 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:31 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:30 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:30 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:29 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:3:29 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:2:15 Critical(3) "TFTP Request Retries exceeded, CM unable to register "
1-1-1970, 0:2:15 Critical(3) "TFTP failed - Request sent - No Response;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:1:31 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:1:24 Critical(3) "TFTP Request Retries exceeded, CM unable to register "
1-1-1970, 0:1:24 Critical(3) "TFTP failed - Request sent - No Response;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:38 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;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:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:0:43 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;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:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
4-6-2018, 3:50:44 Critical(3) "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:7:23 Critical(3) "No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"
1-1-1970, 0:6:56 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
4-6-2018, 3:42:13 Critical(3) "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=5c:e3:0e:73:45:1d;CMTS-MAC=00:01:5c:aa:9c:66;CM-QOS=1.1;CM-VER=3.1;"

 

And here are signal levels-

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 687000000 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
30 Locked QAM256 687000000 Hz 1.2 dBmV 40.4 dB 0 0
1 Locked QAM256 513000000 Hz -1.6 dBmV 39.3 dB 0 0
2 Locked QAM256 519000000 Hz -1.3 dBmV 39.5 dB 0 0
3 Locked QAM256 525000000 Hz -1.1 dBmV 39.3 dB 0 0
4 Locked QAM256 531000000 Hz -0.9 dBmV 39.4 dB 0 0
5 Locked QAM256 537000000 Hz -0.6 dBmV 39.5 dB 0 0
6 Locked QAM256 543000000 Hz -0.5 dBmV 39.7 dB 0 0
7 Locked QAM256 549000000 Hz -0.2 dBmV 39.8 dB 0 0
8 Locked QAM256 555000000 Hz -0.1 dBmV 39.8 dB 0 0
9 Locked QAM256 561000000 Hz -0.1 dBmV 39.5 dB 0 0
10 Locked QAM256 567000000 Hz -0.1 dBmV 39.7 dB 0 0
11 Locked QAM256 573000000 Hz -0.2 dBmV 39.5 dB 0 0
12 Locked QAM256 579000000 Hz -0.3 dBmV 39.4 dB 0 0
13 Locked QAM256 585000000 Hz -0.3 dBmV 39.4 dB 0 0
14 Locked QAM256 591000000 Hz -0.4 dBmV 39.2 dB 0 0
15 Locked QAM256 597000000 Hz -0.3 dBmV 39.3 dB 0 0
16 Locked QAM256 603000000 Hz -0.1 dBmV 39.4 dB 0 0
17 Locked QAM256 609000000 Hz -0.2 dBmV 39.6 dB 0 0
18 Locked QAM256 615000000 Hz -0.1 dBmV 39.7 dB 0 0
19 Locked QAM256 621000000 Hz 0.2 dBmV 39.9 dB 0 0
20 Locked QAM256 627000000 Hz 0.3 dBmV 39.8 dB 0 0
21 Locked QAM256 633000000 Hz 0.7 dBmV 40.0 dB 0 0
22 Locked QAM256 639000000 Hz 0.6 dBmV 40.1 dB 0 0
23 Locked QAM256 645000000 Hz 0.7 dBmV 40.3 dB 0 0
24 Locked QAM256 651000000 Hz 0.9 dBmV 40.3 dB 0 0
25 Locked QAM256 657000000 Hz 0.9 dBmV 40.4 dB 0 0
26 Locked QAM256 663000000 Hz 1.1 dBmV 40.5 dB 0 0
27 Locked QAM256 669000000 Hz 1.1 dBmV 40.6 dB 0 0
28 Locked QAM256 675000000 Hz 1.0 dBmV 40.3 dB 0 0
29 Locked QAM256 681000000 Hz 1.1 dBmV 40.6 dB 0 0
31 Locked QAM256 693000000 Hz 1.2 dBmV 40.6 dB 0 0
32 Locked Other 750000000 Hz 3.0 dBmV 39.8 dB 241811 0
Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 2 Locked SC-QAM 29400000 Hz 6400000 Hz 39.5 dBmV
2 1 Locked SC-QAM 35800000 Hz 6400000 Hz 39.0 dBmV
3 3 Locked SC-QAM 23000000 Hz 6400000 Hz 39.5 dBmV
Current System Time: Wed May 2 02:42:52 2018