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Netgear CM1200 DOCSIS 3.1 Multi-Gig Cable failure
After many frustrating weeks of restarting modem several times a day, I gave up and called Netgear. Of course, they blamed ISP, opened and closed the case same day. ISP, of course, said it was prob...
What is the brand and model of the host wifi router connected to the modem?
How is the router and modem connected together and configured? Single cable or LAG enabled?
Please post a copy and paste of the modems connection status page.
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.
Be sure to power OFF the modem for 1 minute then back ON.
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
Airport Extreme Model Number A1521 connected by single cable to modem.
Flashing light persists after powering modem off and on.
ISP has checked modem and all is working.
It is the flashing light on ROUTER that persists. This is irrelevant to Netgear.
So the modem is working then.