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Internet Repeatedly Dropping

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Internet Repeatedly Dropping

So since about New Year our internet connection has been dropping sporadically.  I've called in about a dozen times and have had techs come out twice.  The tech swapped a splitter and an adaptor that was outside the home.  Worked great for a few days then back to the same stuff.  My Router gives me an error every time it disconnects saying my ISP's DHCP did not function correctly.  I've also noticed my upstream bounces between 4 and 1 channels.

 

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel   Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK  
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed  

 

 
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked 256QAM 16 465.00 MHz -2.90 dBmV 40.37 dB 0 0
2 Locked 256QAM 17 471.00 MHz -2.60 dBmV 40.37 dB 8 0
3 Locked 256QAM 18 477.00 MHz -2.40 dBmV 40.37 dB 0 0
4 Locked 256QAM 19 483.00 MHz -2.10 dBmV 40.37 dB 5 0
5 Locked 256QAM 20 489.00 MHz -1.80 dBmV 40.37 dB 20 0
6 Locked 256QAM 21 495.00 MHz -1.80 dBmV 40.37 dB 0 0
7 Locked 256QAM 22 507.00 MHz -1.50 dBmV 40.37 dB 0 0
8 Locked 256QAM 23 513.00 MHz -1.80 dBmV 40.37 dB 0 0
9 Locked 256QAM 24 519.00 MHz -1.90 dBmV 40.37 dB 0 0
10 Locked 256QAM 25 525.00 MHz -1.80 dBmV 40.95 dB 6 0
11 Locked 256QAM 26 531.00 MHz -1.50 dBmV 40.37 dB 0 0
12 Locked 256QAM 27 537.00 MHz -1.50 dBmV 40.37 dB 0 0
13 Locked 256QAM 28 543.00 MHz -1.40 dBmV 40.37 dB 0 0
14 Locked 256QAM 29 549.00 MHz -1.20 dBmV 38.98 dB 0 0
15 Locked 256QAM 30 555.00 MHz -0.70 dBmV 40.95 dB 0 0
16 Locked 256QAM 31 561.00 MHz -0.80 dBmV 40.95 dB 0 0
17 Locked 256QAM 32 567.00 MHz -0.80 dBmV 40.37 dB 0 0
18 Locked 256QAM 33 573.00 MHz -0.70 dBmV 40.95 dB 0 0
19 Locked 256QAM 34 579.00 MHz -0.90 dBmV 40.37 dB 0 0
20 Locked 256QAM 35 585.00 MHz -0.80 dBmV 40.37 dB 0 0
21 Locked 256QAM 36 591.00 MHz -0.80 dBmV 40.37 dB 0 0
22 Locked 256QAM 37 597.00 MHz -0.70 dBmV 40.95 dB 0 0
23 Locked 256QAM 38 603.00 MHz -1.10 dBmV 40.37 dB 0 0
24 Locked 256QAM 39 609.00 MHz -1.00 dBmV 40.37 dB 0 0
25 Locked 256QAM 40 615.00 MHz -1.00 dBmV 40.40 dB 0 0
26 Locked 256QAM 41 621.00 MHz -1.20 dBmV 38.90 dB 0 0
27 Locked 256QAM 42 627.00 MHz -1.10 dBmV 38.60 dB 0 0
28 Locked 256QAM 43 633.00 MHz -0.60 dBmV 38.60 dB 0 0
29 Locked 256QAM 44 639.00 MHz -0.40 dBmV 38.60 dB 0 0
30 Locked 256QAM 45 645.00 MHz -0.60 dBmV 39.20 dB 11 0
31 Locked 256QAM 46 651.00 MHz -1.00 dBmV 39.20 dB 0 0
32 Locked 256QAM 47 657.00 MHz -1.40 dBmV 38.60 dB 9 0

 

 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 kSym/s 36.50 MHz

57.00 dBmV

 

 

 

 

 

 

 

Time Priority Description
Thu Jan 01 00:45:56 1970 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:46:19 1970 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:47:11 1970 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:47:45 1970 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:48:37 1970 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:49:14 1970 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:49:49 1970 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 11:53:54 2020 6 TLV-11 - unrecognized OID;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 13:50:39 2020 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:15:29 2020 3 Ranging Request Retries exhausted;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:15:29 2020 3 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:15:43 2020 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:15:49 2020 3 Ranging Request Retries exhausted;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:15:49 2020 3 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:15:50 2020 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:20:01 2020 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:01:45 1970 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:02:36 1970 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Thu Jan 01 00:02:58 1970 3 No Ranging Response received - T3 time-out;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;
Sat Feb 01 16:24:07 2020 6 TLV-11 - unrecognized OID;CM-MAC=14:c0:3e:c4:40:a3;CMTS-MAC=00:01:5c:a7:6a:4e;CM-QOS=1.1;CM-VER=3.0;

 

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Expert

Re: Internet Repeatedly Dropping

The upstream power istoo high / out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, the unbonding of channels, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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