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CAX80 Restart loop
Modem/router constantly reboots. After a restart, it will establish sync with Xfinity network. Xfinity support can see the Modem briefly and from their side they say signals look fine, but after abo...
How long have you had the modem for?
Is this new issue that just appeared?
Something you may need to contact NG support about:
Need to check to endure the signal on the ISP line IS good and working and of good quality. If the signal is bad or not present, this will cause the CAX80 to continually reboot until it can establish a connection with the ISP and the signal on the coax line is good.
Can you get access to the CAX80s Cable Connection web page log enough to capture this page and post it here?
Can you see what FW version is loaded on the CAX80?
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html