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SYNC Timing Synchronization failure / Lost MDD Timeout

T
The Many
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I keep getting this errors in the modem event log. How can they be fixed ?

 

Sun Apr 27 10:36:03 2025 3 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:03 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:03 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:03 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 3 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:04 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:36:10 2025 3 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:41:26 2025 5 RCS Partial Service;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:41:26 2025 3 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 10:41:30 2025 5 Lost MDD Timeout;CM-MAC=5c:e3:0e:3b:96:03;CMTS-MAC=00:01:5c:ac:a8:7a;CM-QOS=1.1;CM-VER=3.0;
Sun Apr 27 11:03:02 2025 4 DHCP RENEW FAILED - Critical field invalid in response
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3 replies

S
Wi-Fi Warriors
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Could you please provide your product’s model number?

The event logs are related to your service provider. Please check with them to see if there are any outages in your area.

Are you experiencing any internet drops?

 

SURFboard Community Moderator Team
T
The Many
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  • tdsolbergThe Many
  • Author
  • The Many
  • 1 reply
  • April 28, 2025

Surf Board 6190

Standard Specification Compliant ARRIS DOCSIS 3.0 Cable Modem / Retail
Hardware Version 3
Software Version 9.1.93N
Cable Modem MAC Address (Edited personal information)
S
Wi-Fi Warriors
Forum|alt.badge.img+42

 

Could you please let us know if you are experiencing any internet drops and the speed plan which you are subscribed to? 

SURFboard Community Moderator Team

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