NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
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, ...
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.
do you also have your modem logs?
The cable connection pages just gives us a snap shot of when you load the page. Its used in conjunction with the logs.
If you do have any splitters, amplifiers, attenuators, I'd remove them.
Time Priority Description 2020-9-29, 21:59:59 Warning (5) Dynamic Range Window violation 2020-9-29, 21:59:28 Critical (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, 21:58:56 Critical (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, 21:58:39 Warning (5) Dynamic Range Window violation 2020-9-29, 21:57:48 Critical (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, 21:57:16 Critical (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, 21:56:48 Critical (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, 21:56:16 Critical (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, 21:55:28 Critical (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, 21:54:56 Critical (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, 21:54:29 Critical (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, 21:53:56 Critical (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, 21:53:09 Critical (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, 21:52:36 Critical (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, 21:52:09 Critical (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, 21:51:36 Critical (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, 21:51:21 Critical (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, 21:50:56 Critical (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, 21:50:41 Critical (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, 21:50:09 Critical (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, 21:49:47 Critical (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, 21:49:37 Critical (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, 21:49:09 Critical (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, 21:48:37 Critical (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, 21:48:09 Critical (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, 21:48:03 Critical (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, 21:47:37 Critical (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, 21:46:51 Critical (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, 21:46:19 Critical (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, 21:45:01 Critical (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, 21:45:01 Critical (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, 21:45:01 Critical (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, 21:44:01 Warning (5) Dynamic Range Window violation 2020-9-29, 21:43:42 Critical (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, 21:43:31 Critical (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, 21:43:04 Warning (5) Dynamic Range Window violation 2020-9-29, 21:43:04 Critical (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, 21:43:02 Warning (5) Dynamic Range Window violation 2020-9-29, 21:42:58 Critical (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, 21:42:52 Warning (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.