I keep on losing internet connection. Modem is throwing errors.

[dijkstra]

I keep having periodic connection issues and I beleive it's either the modem or an issue further along the line.

This is from my even log.

Wed Apr 08 00:41:14 2020	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=30:60:23:73:d3:08;CMTS-MAC=00:01:5c:9d:aa:58;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Mon Apr 06 10:53:48 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=30:60:23:73:d3:08;CMTS-MAC=00:01:5c:9d:aa:58;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Thu Apr 02 00:13:20 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=30:60:23:73:d3:08;CMTS-MAC=00:01:5c:9d:aa:58;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 02 00:13:10 2020	Critical (3)	No Ranging Response received - T3 time-out
Thu Apr 02 00:12:50 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=30:60:23:73:d3:08;CMTS-MAC=00:01:5c:9d:aa:58;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out

As you can see, I keep getting the T3 time-out. The modem's connectivity light remains blue but I lose access to the internet. While I do not have a snapshot of the channels during the outage, here is my current stats.

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Corrected	Uncorrectables
1	Locked	QAM256	16	501000000 Hz	10.0 dBmV	41.9 dB	0	0
2	Locked	QAM256	17	507000000 Hz	9.8 dBmV	41.9 dB	0	0
3	Locked	QAM256	18	513000000 Hz	9.5 dBmV	41.5 dB	0	0
4	Locked	QAM256	19	519000000 Hz	8.9 dBmV	41.4 dB	0	0
5	Locked	QAM256	20	525000000 Hz	8.5 dBmV	41.3 dB	0	0
6	Locked	QAM256	21	531000000 Hz	9.4 dBmV	40.7 dB	0	0
7	Locked	QAM256	22	537000000 Hz	10.0 dBmV	41.0 dB	0	0
8	Locked	QAM256	23	543000000 Hz	10.4 dBmV	40.8 dB	0	0

Upstream Bonded Channels
Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	4	5120 Ksym/sec	16500000 Hz	42.0 dBmV
2	Locked	ATDMA	1	5120 Ksym/sec	36100000 Hz	43.2 dBmV
3	Locked	ATDMA	2	5120 Ksym/sec	29600000 Hz	42.5 dBmV
4	Locked	ATDMA	3	5120 Ksym/sec	23000000 Hz	42.0 dBmV

I don't know much about this much it is getting a little annoying. I should mention that I do not have cable TV and therefore no splitters. The line runs straight into the modem.

[EG]

The downstream power is on the high side. Try using a 3 dB signal attenuator pad like this one on the back of the modem;

https://www.amazon.com/In-Line-Attenuator-3-dB-1/dp/B0002ZPIUU

You could try a 6 dB one as well. Not certain that this is the direct cause of the problem. YMMV. Good luck !

[dijkstra]

I contacted support and they said this:

"The reason for that is it appears that there is a different bootfile or code showing on your modem earlier but I did a refresh already to correct the bootfile and the result is now showing Green Docsis Health. It just requires to provision your modem from the server to correct the bootfile. I already did."

However, I just got a disconnect. However, I did notice something. I wanted to check the channels when the connection was happening but I was unable to log into the router. It's like the software in the router crashes. The activity lights still indicate that the connection is good but I cannot access the router's settings. I would appreciate like a resolution to this as it is interrupting my work.

[dijkstra]

Would a too high downstream power make it so I cannot login in to my router?