Morac,
Had sporadic connectivity problems over last few days here -- good RF stats (4/3 channels down/up with good levels) but either no Internet or extremely slow. Same modem as you and essentially identical log:
13 06/22/12 08:28:50 Z00.0 warning MIMO Event MIMO: Stored MIMO=0 post cfg file MIMO=0;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
14 06/22/12 08:29:35 R02.0 critical No Ranging Response received - T3 time-out;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
15 06/22/12 08:29:51 U102.0 warning TCS Partial Service;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
16 06/22/12 08:29:51 U103.0 warning Initializing Channel Timeout Expires - Time the CM can perform initial ranging on all upstream channels in the TCS has expired;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
17 06/22/12 08:29:54 R05.0 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
18 06/22/12 08:33:54 R04.0 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
19 06/22/12 08:34:05 E115.0 notice Added MAC address [00:26:f2:a1:57:6b]
20 06/22/12 11:43:24 R04.0 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:26:5b:4b:26:a0;CMTS-MAC=00:01:5c:22:b5:cf;CM-QOS=1.1;CM-VER=3.0;
POPOed modem a few times and took ~ 5 minutes to fully connect with several drop-backs from finding upstream back to finding downstream (based on LEDs) before success..
Problem cleared up about 9 AM today. So ... I assume this is a problem at the plant and nothing to do with our equipment or local lines.
RR