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pjackson9's avatar
pjackson9
Follower
May 20, 2020

Cable Modem

I'm using the Nighthawk CM12000 cable modem with Xfinity as my ISP.  I have an ethernet cable in port 1 going to my PC.  The PC can access the internet without any problems.  I have another ethernet ...
FURRYe38's avatar
FURRYe38
Guru - Experienced User
May 21, 2020

What happens if you connect your wifi router to port #1 and your PC to the back of the wifi router? 

pjackson9 wrote:

I'm using the Nighthawk CM12000 cable modem with Xfinity as my ISP.  I have an ethernet cable in port 1 going to my PC.  The PC can access the internet without any problems.  I have another ethernet cable in port 2 going to my Nighthawk X6S (model: R8000P). It is not getting a connection to the internet.  I tried all three ports on the back of the cable modem with no luck.

 

It seems like only port 1 is working on the back of the cable modem.  I tried to reset the modem by holding the reset button for 30 seconds.  I was hoping that it would erase the password that was setup, but I still cannot log into the modem with the default username & password.  And port 1 is still the only one that works.  I moved the cable (on port 1) from my PC and connected it to the router, and it worked.