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Forum Discussion
CM1150V Not allowing network router to connect to Internet.
Today I bought a Netgear CM1150V Xfinity modem. (2nd of April 2020) Setup was easy. The firmware is the most up to date for today. The problem is the modem is blocking my routers from conecting to th...
SOunds like the CM modem maybe faulty. I would try another CM modem. Users can connect any external router to the modem and should get internet access and not be blocked after a period of time.
You might try resetting the CM modem and have the ISP send down there configuration file again and see if this clears the problem.
Have the ISP check the signal and line quality UP to the modem.
Be sure there are not 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.
IF this stil fails, Try another CM modem. Possible the one you have is just faulty.