Hello,
I've been having modem reboot issues for about a month now. I have since changed both my modem (SB6121 per the DCIOS 3.0 upgrade) and my router (Switched to a wired router + wireless AP settup), but no combination of hardware has fixed the problem. I only recently though to check the blasted modem logs. There are lots of T4/T3 timeouts followed by reboots.
I have a smart box that splits the coax and a patch to distribute ethernet throughout the house.
Here is some recent logs and Downstream/Upstream info:
Aug 11 2014 19:58:22 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:57:43 5-Warning T07.0 RCS Partial Service;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:57:42 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:22 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:13 6-Notice N/A Cable Modem Reboot due to T4 timeout ;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:56:33 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:56:32 3-Critical R04.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:52:26 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:51:50 5-Warning T07.0 RCS Partial Service;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:51:49 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:51:17 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:50:45 3-Critical C204.0 DCC aborted unable to acquire new downstream channel;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:07:11 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:06:33 5-Warning T07.0 RCS Partial Service;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:06:32 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:06:05 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 19:05:39 3-Critical C204.0 DCC aborted unable to acquire new downstream channel;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:18:03 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:17:31 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:17:22 5-Warning T07.0 RCS Partial Service;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:17:21 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:19 3-Critical R07.0 Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:13 6-Notice N/A Cable Modem Reboot due to T4 timeout ;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:16:19 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:16:17 3-Critical R04.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:15:47 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:15:37 4-Error C401.0 DCC-ACK not received;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 11 2014 18:15:37 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 10 2014 21:46:09 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 10 2014 21:45:39 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 10 2014 21:45:30 5-Warning T07.0 RCS Partial Service;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
Aug 10 2014 21:45:29 5-Warning Z00.0 MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=64:55:b1:b8:c6:96;CMTS-MAC=00:1d:45:70:56:79;CM-QOS=1.1;CM-VER=3.0;
DOWNSTREAM
Channel ID 193
Frequency 555000000 Hz
Signal to Noise Ratio 37 dB
Downstream Modulation QAM256
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
0 dBmV
UPSTREAM
Channel ID 2
Frequency 36500000 Hz
Ranging Service ID 6350
Symbol Rate 5.120 Msym/sec
Power Level 48 dBmV
Upstream Modulation [3] QPSK
[3] 64QAM
Any help would be greatly appreciated!