07-09-2016 07:01 AM
I have an appointment for a tech from TWC to come to the house Tuesday morning. Deja vu, the same thing as the last time. Maybe this one will understand what the modem logs and signals mean. :-\
07-09-2016 08:29 AM
The modem dropped downstream channel 11 yesterday, this morning it picked it up again Look at the high uncorrectables on channel 11!
|Frequency||555000000 Hz||561000000 Hz||567000000 Hz||579000000 Hz||591000000 Hz||597000000 Hz||615000000 Hz|
|Signal to Noise Ratio||38 dB||36 dB||38 dB||37 dB||38 dB||39 dB||38 dB|
|Power Level |
|0 dBmV||0 dBmV||0 dBmV||0 dBmV||1 dBmV||1 dBmV||0 dBmV|
|Frequency||37000000 Hz||24200000 Hz||30600000 Hz||19400000 Hz|
|Ranging Service ID||3326||3326||3326||3326|
|Symbol Rate||2.560 Msym/sec||5.120 Msym/sec||5.120 Msym/sec||2.560 Msym/sec|
|Power Level||44 dBmV||42 dBmV||42 dBmV||41 dBmV|
|Upstream Modulation|| QPSK|
|Total Unerrored Codewords||7994445243||7993479807||7638409341||7518850238||7499336909||5552324798||3168168329|
|Total Correctable Codewords||22||12||54||77||131||76||70|
|Total Uncorrectable Codewords||535||1399||2631||5206||6497||86398||188778|
07-09-2016 04:33 PM - edited 07-09-2016 04:34 PM
It got bad after that, at 4:45 I had to reboot the modem because it switched channels again, and suddenly my formerly 50 Mbps download speed turned into only 0.50 Mbps, according to speedtest.net
I just heard from the original TWC tech who I had called, he was on vacation! He's thinking of bringing a test modem to see what it does. Still trying to convince him of the ingress.
I did the power reset shown here, after the issues just prior to it in the log, which led to the total loss of speed.
|ul 09 2016 15:48:20||6-Notice||I401.0||TLV-11 - unrecognized OID;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 09 2016 15:48:20||5-Warning||Z00.0||MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jan 01 1970 00:00:15||6-Notice||N/A||Cable Modem Reboot due to power reset ;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 09 2016 15:10:45||5-Warning||T202.0||Lost MDD Timeout;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 09 2016 15:10:45||5-Warning||N/A||DS Partial Service Fallback: MDD Lost-> CM in DOCSIS 3.0 Recovery Mode ;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 09 2016 15:10:22||6-Notice||N/A||MDD Recovery following MDD Loss;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 08 2016 22:02:45||5-Warning||T202.0||Lost MDD Timeout;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 08 2016 22:02:45||5-Warning||N/A||DS Partial Service Fallback: MDD Lost-> CM in DOCSIS 3.0 Recovery Mode ;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 08 2016 16:27:39||3-Critical||R02.0||No Ranging Response received - T3 time-out;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 08 2016 07:25:57||5-Warning||T202.0||Lost MDD Timeout;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
|Jul 08 2016 07:25:57||5-Warning||N/A||DS Partial Service Fallback: MDD Lost-> CM in DOCSIS 3.0 Recovery Mode ;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0;|
07-09-2016 07:15 PM
Downstream partial service is caused by a broken shield connection somewhere...Broadcast TV is getting in intermittently
A 16 channel modem stays on the bad channels but has awfull error counts on them whereas yours is trying to find good ones. This is probably a job for the bucket truck guys unless this tech can drive from your modem back to the HFC fiber converter and look for a serious egress point which is probably where the Ingress is getting in.
07-12-2016 08:52 PM - edited 07-12-2016 08:53 PM
The tech came out Sunday, hooked up one of his test modems up on the pole by my house, and said he was getting erratic speeds, whereas the same modem was rock stable back at his office, so he contacted the maintenance bucket crew to find where the bad connections were. They were out on the pole at midnight Sunday, at the same time i experienced a big slowdown. He called today and said they detected issues on a couple of my neighbors lines and had to follow up to get into their homes to see what was going on there.
The tech thinks that in addition to that, i may have a problem with my modem or its power supply, although nothing in my logs has indicated an issue with the power supply, that I can see.
He gave me one of his test modems to try for a few days, which apparently is provisioned for him, and allows much faster up and download speeds than I pay for.... so instead of my 50 Mbps down and 5 up on speedtest.net, when I hooked it up last night, it was getting about 89 Mbps down and 20 up. It's got 16 downstream channels, and is an Arris Touchstone SB 6183. The logs haven't shown anything since the initial hookup last night. The Status page so far always shows 0 uncorrectables, which makes me wonder if it uses a different baseline than my SB6141. Anyway, i can't help feeling his modem being provisioned for him as a tech at a higher speed and 16 channels, may not be the best test for whether my modem is bad. it feels like comparing apples to oranges, though the tech seems to feel otherwise.
This evening, speedtest was showing very erratic download speeds with his modem, ranging anywhere from 80 Mbps down to 25 Mbps down, as I tried it connecting to different servers. I think that's the erratic issue he saw, that may be due to the leakage from bad connections at neighbors on my node.
Anyway, I'll update when I find out if they fix anything there. Still have to determine if it's just that, or if there's also an issue with my modem or PSU..... and how to test that.
Here's the Status page from the loaner SB6183:
The statuses listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.
|Acquire Downstream Channel||Locked|
|DOCSIS Network Access Enabled||Allowed|
|Channel||Lock Status||Modulation||Channel ID||Frequency||Power||SNR||Corrected||Uncorrectables|
|1||Locked||QAM256||4||573000000 Hz||-1.2 dBmV||40.0 dB||0||0|
|2||Locked||QAM256||2||561000000 Hz||-1.3 dBmV||40.0 dB||0||0|
|3||Locked||QAM256||3||567000000 Hz||-1.2 dBmV||40.1 dB||1||0|
|4||Locked||QAM256||1||555000000 Hz||-1.5 dBmV||40.0 dB||4||0|
|5||Locked||QAM256||5||579000000 Hz||-1.2 dBmV||39.8 dB||3||0|
|6||Locked||QAM256||6||585000000 Hz||-0.8 dBmV||39.9 dB||1||0|
|7||Locked||QAM256||7||591000000 Hz||-0.5 dBmV||40.1 dB||2||0|
|8||Locked||QAM256||8||597000000 Hz||-0.1 dBmV||40.3 dB||4||0|
|9||Locked||QAM256||9||603000000 Hz||-0.1 dBmV||40.3 dB||1||0|
|10||Locked||QAM256||10||609000000 Hz||-0.4 dBmV||40.2 dB||3||0|
|11||Locked||QAM256||11||615000000 Hz||-0.7 dBmV||40.0 dB||3||0|
|12||Locked||QAM256||12||621000000 Hz||-0.9 dBmV||39.9 dB||2||0|
|13||Locked||QAM256||13||627000000 Hz||-0.8 dBmV||39.9 dB||0||0|
|14||Locked||QAM256||14||633000000 Hz||-0.5 dBmV||40.1 dB||2||0|
|15||Locked||QAM256||15||639000000 Hz||-0.5 dBmV||40.0 dB||0||0|
|16||Locked||QAM256||16||645000000 Hz||-0.5 dBmV||40.0 dB||1||0|
|Channel||Lock Status||US Channel Type||Channel ID||Symbol Rate||Frequency||Power|
|1||Locked||ATDMA||3||5120 Ksym/sec||30600000 Hz||43.5 dBmV|
|2||Locked||ATDMA||2||5120 Ksym/sec||24200000 Hz||43.0 dBmV|
|3||Locked||TDMA||1||2560 Ksym/sec||19400000 Hz||43.0 dBmV|
|4||Locked||ATDMA||4||2560 Ksym/sec||37000000 Hz||44.3 dBmV|
Current System Time: Tue Jul 12 22:51:42 2016
07-13-2016 06:06 AM
I wondered about that. He said when he loaned it, that it got 300 down. I knew that was it's capability but didn't know if he meat that's what I should see at my house using his tech-provisioned modem. If that's the case, then it's got a big issue.
He also claimed that i'd see the same issues with both modems if mine wasn't bad, but apparently his 16-channel won't drop channels and have partial service fallbacks like my 8-channel, so it IS comparing apples to oranges.