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user_syo254
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6 Messages

Saturday, February 19th, 2022 7:36 PM

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MDD message timeout

As far as I can tell same issue as here:

https://forums.xfinity.com/conversations/your-home-network/semifrequent-mdd-message-timeout-which-leads-to-high-packet-loss-events-disconnects/6112ea536e891e630f6a97de

First call, Comcast restarted the modem, verified they were able to connect and called it a day.

Second call, got lucky and modem lost signal while on call. Tech verified bad signals and scheduled a tech go onsite. Tech shows up, sees Arris SB6141 and says it's not supported and leaves, even though it still shows up on Comcast's own supported modems page SMH.

*replaced SB6141 with SB8200 and installed new router...same issues SMH again

Third call, they said they'd send a tech to come out and check signals, but my concern now is that this may be due to a loose/cut cable upstream of the modem/building. If the signal check at the time the tech is on-site is good, what recourse do I have to hold Comcast accountable to stabilize the connection?

Considering it's a brand new (latest supported model) modem and the modem is showing the following when we lose internet for a minute:

02/19/2022 10:20 74010100 6 "CM-STATUS message sent. Event Type Code: 4; Chan ID: 4 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=***;CMTS-MAC=***;CM-QOS=1.1;CM-VER=3.1;"

02/19/2022 10:19 84020300 5 "MDD message timeout;CM-MAC=***;CMTS-MAC=***;CM-QOS=1.1;CM-VER=3.1;"n

I don't see how it could be anything OTHER than a bad line or upstream node hardware (we've had a lot of snow/blizzards and freezing temps here recently).

Question

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Updated 

3 years ago

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user_syo254

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6 Messages

3 years ago

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 507000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed
Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
5 Locked QAM256 507000000 Hz 3.6 dBmV 40.5 dB 2111 249
2 Locked QAM256 483000000 Hz 3.4 dBmV 40.5 dB 2531 218
3 Locked QAM256 489000000 Hz 3.7 dBmV 40.6 dB 2392 233
4 Locked QAM256 495000000 Hz 3.5 dBmV 40.4 dB 2210 256
6 Locked QAM256 513000000 Hz 3.5 dBmV 40.7 dB 2037 200
7 Locked QAM256 519000000 Hz 3.5 dBmV 40.5 dB 2087 276
8 Locked QAM256 525000000 Hz 3.3 dBmV 40.5 dB 2047 176
9 Locked QAM256 531000000 Hz 3.4 dBmV 40.5 dB 1987 565
10 Locked QAM256 537000000 Hz 3.2 dBmV 40.5 dB 1744 202
11 Locked QAM256 543000000 Hz 3.0 dBmV 40.5 dB 1751 182
12 Locked QAM256 549000000 Hz 3.0 dBmV 40.5 dB 1633 171
13 Locked QAM256 555000000 Hz 3.3 dBmV 40.6 dB 1387 190
14 Locked QAM256 561000000 Hz 3.0 dBmV 40.4 dB 1420 228
15 Locked QAM256 567000000 Hz 3.2 dBmV 40.6 dB 1223 236
16 Locked QAM256 573000000 Hz 2.9 dBmV 40.2 dB 1281 208
17 Locked QAM256 579000000 Hz 3.0 dBmV 40.5 dB 1177 248
18 Locked QAM256 585000000 Hz 2.7 dBmV 40.5 dB 1385 276
19 Locked QAM256 591000000 Hz 2.4 dBmV 40.3 dB 1459 262
20 Locked QAM256 597000000 Hz 2.2 dBmV 40.3 dB 1423 686
21 Locked QAM256 603000000 Hz 2.3 dBmV 40.2 dB 1241 521
22 Locked QAM256 609000000 Hz 2.0 dBmV 40.1 dB 1234 587
23 Locked QAM256 615000000 Hz 1.8 dBmV 40.1 dB 1320 703
24 Locked QAM256 621000000 Hz 1.7 dBmV 40.0 dB 1358 877
25 Locked QAM256 627000000 Hz 1.4 dBmV 40.0 dB 1379 975
26 Locked QAM256 633000000 Hz 1.2 dBmV 39.9 dB 1221 1140
27 Locked QAM256 639000000 Hz 1.2 dBmV 39.8 dB 1390 1145
28 Locked QAM256 645000000 Hz 1.7 dBmV 40.1 dB 1537 1569
29 Locked QAM256 651000000 Hz 1.6 dBmV 40.1 dB 1159 1521
30 Locked QAM256 657000000 Hz 1.6 dBmV 40.2 dB 1300 1517
31 Locked QAM256 663000000 Hz 1.3 dBmV 39.9 dB 1243 1702
32 Locked QAM256 669000000 Hz 1.7 dBmV 40.1 dB 1322 1603
33 Locked Other 722000000 Hz 2.2 dBmV 38.5 dB 432755672 36771
Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 1 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 38.0 dBmV
2 2 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 39.0 dBmV
3 3 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 40.0 dBmV
4 4 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 41.0 dBmV
5 5 Locked SC-QAM Upstream 39600000 Hz 1600000 Hz 36.0 dBmV

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user_syo254

Visitor

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6 Messages

3 years ago

Looks like it WAS an upstream issue. Can’t stand Comcast. You can show them all the documentation in the world proving it, but if you’re the first person to notice an issue with the node you’re on, you’re stuck with the issue till others report it SMH.

This is especially problematic if the issue is very sporadic and only happens occasionally. Most people are ok with a 99% daily uptime. Too bad for any of us that have a backup that runs for more then a day and the blip causes it to fail.

0

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user_syo254

Visitor

 • 

6 Messages

3 years ago

Looks like it WAS an upstream issue. Can’t stand Comcast. You can show them all the documentation in the world proving it, but if you’re the first person to notice an issue with the node you’re on, you’re stuck with the issue till others report it SMH.

This is especially problematic if the issue is very sporadic and only happens occasionally. Most people are ok with a 99% daily uptime. Too bad for any of us that have a backup that runs for more then a day and the blip causes it to fail.

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