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pix88's avatar
pix88
Aspirant
Sep 29, 2020
Solved

Intermittent Drops CM500

Hi, working at home and I basically take calls that come in. My modem keeps losing connection, upstream light keeps blinking green. Have already tried things like power cycle, and talking to my ISP, ...
  • plemans's avatar
    plemans
    Sep 30, 2020

    t3/4 errors tend to be line issues. The dynamic range window violations also tend to indicate line isssues as its the power levels going out of limits. 

    I'd contact your isp to check the line. 

pix88's avatar
pix88
Aspirant
Sep 29, 2020
 
 
 
 
TimePriorityDescription
2020-9-29, 21:59:59Warning (5)Dynamic Range Window violation
2020-9-29, 21:59:28Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:58:56Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:58:39Warning (5)Dynamic Range Window violation
2020-9-29, 21:57:48Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:57:16Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:56:48Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:56:16Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:55:28Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:54:56Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:54:29Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:53:56Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:53:09Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:52:36Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:52:09Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:51:36Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:51:21Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:50:56Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:50:41Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:50:09Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:49:47Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:49:37Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:49:09Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:48:37Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:48:09Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:48:03Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:47:37Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:46:51Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:46:19Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:45:01Critical (3)16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:45:01Critical (3)Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:45:01Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:44:01Warning (5)Dynamic Range Window violation
2020-9-29, 21:43:42Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:43:31Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:43:04Warning (5)Dynamic Range Window violation
2020-9-29, 21:43:04Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:43:02Warning (5)Dynamic Range Window violation
2020-9-29, 21:42:58Critical (3)Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=44:a5:6e:6e:a1:60;CMTS-MAC=70:01:b5:cc:b5:61;CM-QOS=1.1;CM-VER=3.0;
2020-9-29, 21:42:52Warning (5)Dynamic Range Window violation
 
 
Ok I found log from today, it looks bad XD I don't have splitters or any of the kind at least not that I know of. Idk if it could be the high traffic during work hours thats doing it. This modem is new and I recently upgraded my speed.
plemans's avatar
plemans
Guru - Experienced User
Sep 30, 2020

t3/4 errors tend to be line issues. The dynamic range window violations also tend to indicate line isssues as its the power levels going out of limits. 

I'd contact your isp to check the line. 

  • pix88's avatar
    pix88
    Aspirant
    Sep 30, 2020

    Ok, thanks so much :)