Cable modem log

18 	2021/2/24 19:6:56.0 	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=ac:b3:13:35:15:12;CMTS-MAC=00:17:10:93:f2:87;CM-QOS=1.1;CM-VER=3.0;
19 	2021/2/24 19:7:11.0 	MDD message timeout;CM-MAC=ac:b3:13:35:15:12;CMTS-MAC=00:17:10:93:f2:87;CM-QOS=1.1;CM-VER=3.0;
20 	2021/2/24 19:7:49.0 	No Ranging Response received - T3 time-out;CM-MAC=ac:b3:13:35:15:12;CMTS-MAC=00:17:10:93:f2:87;CM-QOS=1.1;CM-VER=3.0;