I'm lost for words here on why 3-4 technician visits this week hasn't contributed anything towards a diagnosis and resolution to this ongoing issue.
I've spent countless hours of my own time logging the packet loss with PingPlotter and trying to get someone in my area that actually understands the problem and can actually find the culprit. The evidence gathered consistently points to an ISP wiring/hardware issue outside of the home.
Any help from the community or those who can pull some strings to get attention to this issue will be greatly appreciated.
Facts
Ariel drop done back in September 2013 from junction box on line to my house. New lines and splitters were installed.
Modem is on a 2-way split with the TVs from the outside line.
New modem as of 03/13/15
Packet loss pattern is random, seems to be affected by time of day.
Technicians have not bothered to check or discuss modem error logs, care about the packet loss evidence I presented, or work towards any type of troubleshooting to remedy the problem.
PingPlotter 3/17/15 sample shows over 20% packet loss on hops 2+
Results Here
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dl.dropboxusercontent.co ··· shot.pngPingPlotter on 3/18/15 sample shows ~5.3% packet loss on hop 2, 0% loss on hop 1.
Results Here
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dl.dropboxusercontent.co ··· dard.pngHere's a photo of my next-door neighbors junction box that is open and exposed to the elements. I'm thinking this might be the issue.
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dl.dropboxusercontent.co ··· 6.09.jpgModem diagnostics
Cable Modem
HW Version: 1.5
Vendor: Technicolor
BOOT Version: 2.1.8_Technicolor
Core Version: 01.E6.01.22.15
Model: TC8305C
Product Type: Technicolor DOCSIS 3.0 Packet Cable 2.0 advanced cable gateway
Flash Part: 64 MB
Download Version: 01.E6.01.22.15
Serial Number: 1317201090
Downstream
Channel Bonding Value
Index 1 2 3 4 5 6 7 8
Lock Status Locked Locked Locked Locked Locked Locked Locked Locked
Frequency 675 MHz 651 MHz 657 MHz 663 MHz 669 MHz 681 MHz 687 MHz 693 MHz
SNR 42.2 dB 42.5 dB 42.5 dB 42.5 dB 42.5 dB 42.0 dB 41.9 dB 41.9 dB
Power 7.1 dBmV 6.1 dBmV 6.6 dBmV 6.5 dBmV 6.8 dBmV 7.1 dBmV 7.0 dBmV 7.2 dBmV
Modulation 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM
Upstream Channel Bonding Value
Index 1 2 3 4 Lock Status Locked Locked Locked Not locked
Frequency 23 MHz 36 MHz 30 MHz
Symbol Rate 5120 Ksym/sec 5120 Ksym/sec 5120 Ksym/sec
Power Level 44.5 dBmV 46.0 dBmV 45.5 dBmV
Modulation ATDMA ATDMA ATDMA
Channel ID 9 7 8
System logs from Modem
Wed Mar 18 09:38:55 2015 Notice (6) TLV-11 - unrecognized OID;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:48 2015 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:48 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:43 2015 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:43 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:34 2015 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:34 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0; Wed Mar 18 09:30:26 2015 Warning (5) MDD message timeout;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:30:26 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:04:53 2015 Notice (6) TLV-11 - unrecognized OID;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0; Wed Mar 18 09:04:33 2015 Notice (6) Honoring MDD; IP provisioning mode = IPv6
Wed Mar 18 09:04:23 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Wed Mar 18 09:04:03 2015 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:04:03 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:49 2015 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:49 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:44 2015 Warning (5) MDD message timeout;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0; Wed Mar 18 09:03:44 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:38 2015 Warning (5) MDD message timeout;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0; Wed Mar 18 09:03:38 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:31 2015 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:31 2015 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:30 2015 Warning (5) MDD message timeout;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:27 2015 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
Wed Mar 18 09:03:25 2015 Warning (5) MDD message timeout;CM-MAC=44:32:c8:29:e3:b5;CMTS-MAC=00:01:5c:23:ad:04;CM-QOS=1.1;CM-VER=3.0;
I've posted this in the official Comcast forums as well.