How do I access my cable modem GUI

Thanks Bruce. I think the problem is that my router and Disney Circle are somehow hiding the cable modem. I'll try a direct connection as to get around that. I just it as strange as my last cable modem I was able to see on the network and was able to access its web interface. It was an older Cisco modem.

I'm on the 300/30 broadband service, but I typically get 172/32 for speeds. I was going to see if I can get the web interface to help me check for line levels to see if I can tweak the connection to a better one. I'm not sure if that is a typical reading for connection or not.

@KevinM2, I have tried to call Arris.... Here is what I was told. This CM8200 modem is over 6 years old and they no longer support it directly. I find it funny though that when I was offered a free cable modem upgrade from the COX Communications Customer Service Department to help me be compatible for the connection of the future that I would be sent an (a supposed new) unsupported 6 year old device that the manufacturer wants nothing to do with. The Arris Tech Support Representative promptly wished me well as they said their goodbyes on the phone.