I just purchased a Tivo Roamio Plus and one Mini. The initial cable card pairing and setup went well (although the update took about an hour!). I have my Roamio next to my Verizon Fios router and I had plugged an ethernet cable from the router into the Roamio. I then had set up my Roamio as Moca so that the Mini can see it. When I would check the settings it would say the connection was Ethernet and Moca.
However, when I checked the network settings the Moca had no settings at all. It said Moca was "down" and had all zeros next to the settings. When I unplugged the Ethernet, all of the Moca settings came up and they were excellent settings.
However, I plugged the ethernet cable back in thinking I should have it set up that way because that's how the setup instructions look.
I started watching my Tivo Mini both live tv and some recorded programs and it was buffering and I would get a pop up saying there was a problem with the network. Very annoying. I have been reading more and more and it appears that I don't need to use Ethernet if I have Moca enabled. I was reading somewhere else that the Verizon Fios router is automatically set up as a Moca device anyway. Should I have both Ethernet and Moca connected? I was reading somewhere on the Tivo website that if I do both, it is set up as bridge mode.
I haven't watched TV yet on the Mini with just the Moca setup on the Roamio so not sure if that was the problem, but if anyone can shed some info, I would appreciate it.