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dereklc
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Sunday, May 7th, 2023

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MDD Message Timout and SYNC Timing Synchronization failure

I have had this issue for a few months now. We see the most effect with any sort of streaming on our Smart TV, but occasionally it effects the connections of our laptops as well.

I have a personal Modem/Router: Motorola MG7700

I have read the other forums and completed the following:

1) Power down/Power up

2) Disconnected everything from network, then power cycled

3) Log into modem and router and manually rebooted

4) Inspected cable (no splitters)

I am out of DIY solutions.

Tue Apr 25 12:38:59 2023    Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;
 Sun Apr 30 05:20:08 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Sun Apr 30 05:20:15 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Sun Apr 30 05:20:26 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Sun Apr 30 23:15:15 2023    Critical (3)   Resetting the cable modem due to docsDevResetNow 
 Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
 Mon May 01 19:42:08 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;
 Mon May 01 19:42:27 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Mon May 01 19:42:31 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Mon May 01 23:05:39 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
 Time Not Established   Notice (6)   Honoring MDD; IP provisioning mode = IPv6 
 Fri May 05 09:32:11 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Fri May 05 09:32:11 2023    Warning (5)   MDD message timeout;CM-MAC=[Edited: "Personal Information"];
 Fri May 05 09:33:08 2023    Critical (3)   SYNC Timing Synchronization failure - Failed to acquire FEC framing;
 Fri May 05 09:33:11 2023    Warning (5)   MDD message timeout;CM-MAC=[Edited: "Personal Information"];

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2 years ago

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dereklc

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2 years ago

 Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
1 Locked QAM256 17 435.0 3.2 41.6 23827 19252
2 Locked QAM256 9 387.0 5.1 42.2 8716 16570
3 Locked QAM256 10 393.0 4.9 42.4 27348 15962
4 Locked QAM256 11 399.0 4.9 42.3 33734 18608
5 Locked QAM256 12 405.0 4.5 42.0 34210 26043
6 Locked QAM256 13 411.0 4.2 42.0 35651 26813
7 Locked QAM256 14 417.0 3.7 41.7 22767 24409
8 Locked QAM256 15 423.0 3.5 41.5 21082 24599
9 Locked QAM256 16 429.0 3.5 41.7 25993 23818
10 Locked QAM256 18 441.0 3.0 41.5 29285 28167
11 Locked QAM256 19 447.0 2.8 41.4 33147 26178
12 Locked QAM256 20 453.0 2.9 41.6 33438 23229
13 Locked QAM256 21 459.0 3.1 41.5 34513 22763
14 Locked QAM256 22 465.0 3.1 41.3 29251 27009
15 Locked QAM256 23 471.0 3.0 40.9 16278 22066
16 Locked QAM256 24 477.0 3.1 41.0 26086 26860
17 Locked QAM256 25 483.0 3.1 43.3 34968 80653
18 Locked QAM256 26 489.0 3.2 43.0 31830 80137
19 Locked QAM256 27 495.0 3.4 43.1 40278 78852
20 Locked QAM256 28 507.0 3.0 43.2 39067 66638
21 Locked QAM256 29 513.0 3.1 43.2 39852 78291
22 Locked QAM256 30 519.0 2.7 43.1 36326 74211
23 Locked QAM256 31 525.0 2.3 42.8 35827 76993
24 Locked QAM256 32 531.0 2.1 42.8 37320 78698
Total             730794 986819


   Upstream Bonded Channels  
  
   Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
1 Locked ATDMA 72 5120 35.6 48.5
2 Locked ATDMA 69 5120 16.3 43.5
3 Locked ATDMA 70 5120 22.8 44.3
4 Locked ATDMA 71 5120 29.2 45.5
5 Not Locked Unknown 0 0 0 0.0
6 Not Locked Unknown 0 0 0 0.0
7 Not Locked Unknown 0 0 0 0.0
8 Not Locked Unknown 0 0 0 0.0

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CCKorie

Problem Solver

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1.1K Messages

Hi there, @dereklc. Thank you for trying these steps on your end. I'd be happy to dig more into things on our side, and come up with a resolution for you. Can you send us a DM with your name and address? 

 

Here's the detailed steps to direct message us:

• Click "Sign In" if necessary

• Click the “chat" icon (upper right corner of this page)

• Click the "New message" (pencil and paper) icon

• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list

• Type your message in the text area near the bottom of the window

• Press Enter to send your message

I no longer work for Comcast.

2 years ago

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EG

Expert

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112.2K Messages

2 years ago

Please redact the CM MAC addresses from your error log entries for your privacy. They are considered to be personal information. The posting of personally identifiable information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publically. It flagged your post as "Private".

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