Make sure the wired and wireless are the same network. Apart from that maybe a firewall block (or something like that) is in place on the wireless gateway (?).
Make sure you don’t have AP isolation enabled on your router. This isolates the wireless network from the wired network.
How is your wired connection connected to your router? Is it Roku wired to a device which wirelessly connects to your router?
@seansigep Just chiming in - I’m agreeable with the two posts above. Take a close look at the network, is there anything that could be getting in the way?
Thanks for the follow up!
Everything must be on the same network. Which means they all must be connected to the same device, either wired or wireless.
You cannot connect the Tablo to your modem and then expect wireless clients connected to the ASUS router to connect to the Tablo.
Your modem likely has a router function built into it. Hence why they Tablo and Rokus would be on different networks.
I don’t think the powerline adapter is the problem. Hooking the asus behind the main modem should work IF the asus can be configured as a router behind a router. I have a netgear behind a uverse modem. If all DNS comes from the ISP modem or beyond then everyone ends up on the same net regardless of which router you are plugged into. Most newer routers can be configured this way. Some even detect it and auto-configure this mode. In this mode the asus would be just a switch. Of course I turned all the wifi off on the uverse router since they were sitting side by side.