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Monday, May 27th, 2024 8:28 AM

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IPv6 down for my address?

Something happened around 1 AM on May 24 (see screenshot).  I lost all IPv6.  I rebooted all my network equipment and PCs, reset my Netgear CM600 to factory, retightened all connections, no effect.  I have included the recent modem logs as well.  Is this my problem or yours?  Thanks for reading and please advise.

Time Priority Description
2024-05-26, 17:53:34 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:55:35 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-05-25, 15:55:10 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-05-25, 15:55:05 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-05-25, 15:55:03 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-05-25, 15:55:01 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:55:01 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:54:58 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:54:58 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:54:57 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:54:57 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-25, 15:54:10 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-24, 14:28:19 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;
2024-05-23, 22:35:26 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=14:59:c0:xx:xx:xx;CMTS-MAC=00:90:f0:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;

Question

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11 months ago

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prove

Contributor

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69 Messages

11 months ago

Someone's working today!  Thanks for the assist, whoever your are! 

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XfinityArmand

Official Employee

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2.1K Messages

Hi there @prove!  Thank you so much for taking the time to reach out to Xfinity Support here on our Community Forum.  We are so glad to hear from you and happy to help in any way that we can to address your service concerns.  No worries!  You have reached out to the right team to get things squared away.  Please feel free to shoot us a private message with the details so that we can get a closer look at what is going on.  

 

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