Intermittent Internet. Tried EVERYTHING.
Internet has been intermittent for the past week.
I called customer support and got someone who was pretty competent on the line. He told me the issue had been happening for weeks on end and he's "never seen anything like it before."
My internet drops for 10-20 seconds every 5 minutes. I had TWO techs come in. The first one replaced my line and checked the roof for any signal issues. None reported. Everything was in the clear. He told me that there were some abnormal fluctuations with the node and that he needed to refer someone to go fix that (but never did.)
The second one came in and did essentially the same thing. He told me that none of my neighbors were experiencing the issue, so it really could not be the node if I was the only one with the issue. He suggested it was a router/modem thing.
I had both replaced. STILL. The same issue persists today.
My question is if two techs assured me that there are no issues with the lines/connectivity, and I've tried replacing both modem/router. What could possibly be the issue?!
(I was initially using Netgear Nighthawk Modem 2 in 1, but I read online that it was notorious for having a UDP flood blocking security feature, which limits a certain kind of connection to around 20. Anymore would result in a temporary cessation of the router function because it would flag as under attack. There is no way to disable the security feature).
OK. Fine. Possibly. So I switched over to a Motorola 2 in 1 arris router. Doesn't have the issue, and even lets me disable flood protection. I've tried it. And SAME issue.)
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 23 411000000 Hz 10.5 dBmV 41.5 dB 0 0
2 Locked QAM256 20 393000000 Hz 10.2 dBmV 41.9 dB 0 0
3 Locked QAM256 21 399000000 Hz 10.2 dBmV 41.4 dB 0 0
4 Locked QAM256 22 405000000 Hz 10.5 dBmV 41.9 dB 1 0
5 Locked QAM256 19 387000000 Hz 10.0 dBmV 42.0 dB 0 0
6 Locked QAM256 1 279000000 Hz 11.3 dBmV 41.9 dB 0 0
7 Locked QAM256 2 285000000 Hz 11.0 dBmV 41.9 dB 0 0
8 Locked QAM256 3 291000000 Hz 10.8 dBmV 41.4 dB 0 0
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 30600000 Hz 45.5 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 24200000 Hz 45.5 dBmV
3 Locked ATDMA 1 5120 Ksym/sec 17800000 Hz 45.5 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 37000000 Hz 45.5 dBmV
Mon Dec 07 11:02:27 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=10:05:b1:XX:2d:XX;CMTS-MAC=00:17:XX:9c:d9:12;CM-QOS=1.1;CM-VER=3.0;
Mon Dec 07 10:55:51 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=10:05:b1:XX2d:XXCMTS-MAC=00:17:10:9c:d9:12;CM-QOS=1.1;CM-VER=3.0;
Mon Dec 07 10:55:50 2020 Error (4) Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=10:05:b1:XX:2d:XX;CMTS-MAC=00:17:10:9c:XX:12;CM-QOS=1.1;CM-VER=3.0;