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iclimbonthings's avatar
iclimbonthings
Aspirant
Jun 09, 2020

CM500 T3 and T4 Errors

Hello,    I am having what appears to be some intermittent connection issues with my cable modem. My ISP is Xfinity and they are telling me everything is fine, so I gather this is probably somewher...
iclimbonthings's avatar
iclimbonthings
Aspirant
Jun 09, 2020

Here is my event log

 

2020-6-9, 12:45:36Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:32:58Notice (6)Honoring MDD; IP provisioning mode = IPv6
2020-6-9, 12:32:43Critical (3)No Ranging Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:30:31Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:30:19Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:30:18Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:29:59Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:29:59Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:29:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:29:45Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:29:30Warning (5)Dynamic Range Window violation
2020-6-9, 12:29:26Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:29:11Warning (5)Dynamic Range Window violation
2020-6-9, 12:29:09Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:25:09Warning (5)Dynamic Range Window violation
2020-6-9, 12:24:58Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:24:49Warning (5)Dynamic Range Window violation
2020-6-9, 12:24:38Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:24:26Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:24:09Warning (5)Dynamic Range Window violation
2020-6-9, 12:24:06Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:22:29Warning (5)Dynamic Range Window violation
2020-6-9, 12:21:22Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:20:30Notice (6)Honoring MDD; IP provisioning mode = IPv6
2020-6-9, 12:20:18Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:20:17Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:19:29Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:19:21Critical (3)No Ranging Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:17:56Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:17:23Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:17:08Warning (5)Dynamic Range Window violation
2020-6-9, 12:16:05Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:09:47Notice (6)Honoring MDD; IP provisioning mode = IPv6
2020-6-9, 12:09:33Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:09:32Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:08:44Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:08:38Critical (3)No Ranging Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.0;CM-VER=3.0;
2020-6-9, 12:06:25Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
2020-6-9, 12:06:12Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:a5:11:78:af:fc;CMTS-MAC=00:56:2b:77:89:5d;CM-QOS=1.1;CM-VER=3.0;
plemans's avatar
plemans
Guru - Experienced User
Jun 10, 2020

t3 t4 errors tend to be line issues. Do you have a screen snip of the cable connections page? get all the info off the upstream/downstream