RT-AT68U Cannot see full network

[PatFreel]

I have an AT&T DSL modem / router. All of my wired devices, with the exception of my primary computer, are connected to the LAN via that router. I then connect one cable from that router to the internet input jack on my AC68U. I then connected one cable from the AC68U to my primary computer.
When I go to the network page in Windows, it shows the equipment connected via wireless plus my computer. It does not show the additional computer or printers attached via the AT&T router, preventing me from accessing the other computers. However, although not seen in the network diagram, I can print to my LAN connected printers. If I remove the cable from the internet jack on the AC68U and plug it into one of the LAN jacks, I can then see all the devices on the LAN. However, I can no longer access the internet.
Your assistance would be greatly appreciated.

Pat

 

[whsbuss]

Maybe try connection via one of the LAN ports on the 68U.

 

[jim769]

Never a good idea to cascade two routers best thing to do is have the DSL modem/router placed in bridge mode then use your Asus router for your wired and wireless connections.

 

[PatFreel]

When I connect from the modem to one of the LAN ports on the 68U, I see the entire network but I lose my internet connectivity

Pat