Unstable Connection Causing Modem to constantly Restart

Question

I lose internet connectivity several times a day. First I will notice I am unable to access the internet and then shortly after my modem restarts (ARRIS DOCSIS 3.0 Cable Modem). I checked the modem logs and see the following every time this happens (which is a lot)

Fri Sep 13 12:30:01 2019	6	TLV-11 - unrecognized OID;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 19:15:11 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:11:50 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:11:50 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:12:10 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:12:10 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:12:30 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:12:30 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:12:50 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:12:50 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:15:20 2019	6	TLV-11 - unrecognized OID;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:16:45 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:16:45 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:17:06 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:17:06 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:17:25 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:17:25 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:17:45 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:17:45 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:20:15 2019	6	TLV-11 - unrecognized OID;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 22:50:20 2019	5	RCS Partial Service;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:09:16 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:09:16 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:09:36 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:09:36 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:09:57 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:09:57 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:10:16 2019	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:10:16 2019	3	No Ranging Response received - T3 time-out;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;
Fri Sep 13 23:12:49 2019	6	TLV-11 - unrecognized OID;CM-MAC=2c:7e:81:2b:87:97;CMTS-MAC=00:27:90:0c:50:eb;CM-QOS=1.1;CM-VER=3.0;

Any ideas?

kevinm2 · Answer

Hi jgator, some of your levels appear to be outside of our preferred specifications, which could cause intermittent connectivity. Additionally, those T3 time-out errors could be caused by bad connectors, splitters, etc. Can you please make sure there are no loose or damaged connections? If you have any splitters or amplifiers in the home, please also check to ensure they are in working condition as well. If issues persist, please email us at cox.help@cox.com. -Kevin M. Cox Support Forum Moderator

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