Xfinity Down Same Time Every Day

[username0475]

I have a RT-AC86U on Merlin that has been bullet proof supported by backup UPS connected to Xfinity.

After our last ICE Storm where Xfinity was down for a couple of hours due to power local power outages we started noticing the Xfinity broadband goes down same time every day (~11PM).

Asking for help to troubleshoot to see if it's their end or mine.

I have never posted logs here but what do u all need to see (& redacted) to give me a hand?

 

[Tech9]

The modem has logs, the router has logs. Just find which device is going off-line and go from there.

 

[username0475]

The modem has logs, the router has logs. Just find which device is going off-line and go from there.

I have the AC86U logs - it has several instances of the:

"WAN_Connection: WAN was restored." between 10.55-11.11 each day -

 

[Tech9]

Assuming you don't have any reboot schedulers on your router or it doesn't reboot from other causes - check the modem logs, usually in DOCSIS Event section. If you see something happening at the same time in modem logs or with LED lights - call the ISP.

 

[username0475]

Assuming you don't have any reboot schedulers on your router or it doesn't reboot from other causes - check the modem logs, usually in DOCSIS Event section. If you see something happening at the same time in modem logs or with LED lights - call the ISP.

These are the last 3 events the modem picked up not much to go on:

8/3/2025
09:57:23 6 DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=##:##:0a:78:b0:##;CMTS-MAC=00:01:5c:8e:##:##;CM-QOS=1.1;CM-VER=3.1;
11/3/2025
17:24:57 5 TEK Invalid - Invalid Key Sequence Number;CM-MAC=##:##:0a:78:b0:##;CMTS-MAC=00:01:5c:8e:##:##;CM-QOS=1.1;CM-VER=3.1;
15/3/2025
11:36:34 6 DHCP Renew - lease parameters Time Protocol Servers modified;CM-MAC=:##:##:0a:78:b0:bd;CMTS-MAC=00:01:5c:8e:##:##;CM-QOS=1.1;CM-VER=3.1;
16/3/2025