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What does this mean? Failed to receive MAC SYNC frame within time-out period

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What does this mean? Failed to receive MAC SYNC frame within time-out period

got this event message

was wondering what exactly it means

 

  

Time Priority Description
2017-12-31, 03:48:35 Critical (3) SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;CM-MAC=b0:39:56:99:95:89;CMTS-MAC=00:01:5c:6f:44:5e;CM-QOS=1.1;CM-VER=3.1;

<tabindex=-1>Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 483000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv6 only

<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked QAM256 1 483000000 Hz 3.5 dBmV 39.3 dB 1027048783 0 0
2 Locked QAM256 2 489000000 Hz 3.7 dBmV 39.2 dB 1027098012 0 0
3 Locked QAM256 3 495000000 Hz 3.8 dBmV 39.1 dB 1027108134 0 0
4 Locked QAM256 4 507000000 Hz 3.4 dBmV 39.0 dB 1027117483 0 0
5 Locked QAM256 5 513000000 Hz 2.8 dBmV 38.9 dB 1027126971 0 0
6 Locked QAM256 6 519000000 Hz 2.6 dBmV 38.9 dB 1027135250 198 658
7 Locked QAM256 7 525000000 Hz 2.4 dBmV 38.9 dB 1027145815 73 235
8 Locked QAM256 8 531000000 Hz 2.4 dBmV 38.8 dB 1027154273 0 0
9 Locked QAM256 9 537000000 Hz 2.1 dBmV 38.7 dB 1027166209 1 0
10 Locked QAM256 10 543000000 Hz 2.3 dBmV 38.7 dB 1027175496 0 0
11 Locked QAM256 11 549000000 Hz 2.8 dBmV 38.7 dB 1027184654 1 0
12 Locked QAM256 12 555000000 Hz 2.9 dBmV 38.8 dB 1027193958 1 0
13 Locked QAM256 13 561000000 Hz 2.3 dBmV 38.5 dB 1027203262 0 0
14 Locked QAM256 14 567000000 Hz 1.8 dBmV 38.3 dB 1027212522 0 0
15 Locked QAM256 15 573000000 Hz 1.9 dBmV 38.3 dB 1027222755 1 0
16 Locked QAM256 16 579000000 Hz 1.7 dBmV 38.4 dB 1027231698 1 0
17 Locked QAM256 17 585000000 Hz 1.4 dBmV 38.2 dB 1027241808 0 0
18 Locked QAM256 18 591000000 Hz 1.6 dBmV 38.3 dB 1027250623 1 0
19 Locked QAM256 19 597000000 Hz 2.3 dBmV 38.3 dB 1027260526 3 0
20 Locked QAM256 20 603000000 Hz 2.7 dBmV 38.4 dB 1027269932 0 0
21 Locked QAM256 21 609000000 Hz 2.2 dBmV 38.2 dB 1027286909 0 0
22 Locked QAM256 22 615000000 Hz 1.6 dBmV 38.0 dB 1027297704 0 0
23 Locked QAM256 23 621000000 Hz 1.7 dBmV 38.1 dB 1027306065 1 0
24 Locked QAM256 24 627000000 Hz 1.7 dBmV 38.0 dB 1027316218 1 0
25 Locked QAM256 26 633000000 Hz 1.6 dBmV 37.9 dB 1027332688 0 0
26 Locked QAM256 27 639000000 Hz 1.4 dBmV 37.9 dB 1027341609 2 0
27 Locked QAM256 28 645000000 Hz 1.8 dBmV 38.1 dB 1027351693 2 0
28 Locked QAM256 29 651000000 Hz 2.4 dBmV 37.9 dB 1027360566 1 0
29 Locked QAM256 30 657000000 Hz 2.5 dBmV 38.1 dB 1027365489 2 0
30 Locked QAM256 31 663000000 Hz 2.2 dBmV 37.9 dB 1027370457 1 0
31 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0

<tabindex=-1>Upstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power
1 Locked ATDMA 1 35800000 Hz 47.8 dBmV
2 Locked ATDMA 2 29400000 Hz 48.0 dBmV
3 Locked ATDMA 3 23000000 Hz 47.0 dBmV
4 Not Locked Unknown 0 0 Hz 0.0 dBmV
5 Not Locked Unknown 0 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Hz 0.0 dBmV

<tabindex=-1>Downstream OFDM Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords
1 Locked 0, 1 25 720000000 Hz 2.2 dBmV 36.0 dB 1108 ~ 2987 42519328 2469242 0
2 Not Locked 0 0 0 Hz 1.1 dBmV 0.0 dB 0 ~ 4095 0 0 0

<tabindex=-1>Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked Unknown 0 0 Hz 0 dBmV
2 Not Locked Unknown 0 0 Hz 0 dBmV
Expert

Re: What does this mean? Failed to receive MAC SYNC frame within time-out period

It typically means that your modem and the CMTS / Comcast system are having difficulty talking to each other. Are you experiencing any connectivity problems ?