Edgerouter doesnt "pick up" info from cisco router

[JohanHaugland26697]

Hi,

I am really struggling here and i can't seem to figure out why this doesnt work.

The way this is set up is like this: ISP - Modem - Cisco router - Edgerouter.

This for some reason doesnt work, but if i add a "normal" Asus router between the cisco router and the edgerouter, i get internet right away with the basic setup wizard. So my question is: What am i doing wrong? Why do i get internet if i add the asus router? Is the edgerouter not able to pick up the info it needs from the cisco router?

Really apprecitating answers.

[paul driver]

Hello

just to confirm

Modem - Cisco router - Edgerouter. - client < this doesn’t work

Modem - Asus  - Edgerouter. -client < this works

[JohanHaugland26697]

Modem - Cisco router - EdgeRouter - client < this doesnt work

Modem - cisco router - asus router - EdgeRouter - client < this works

Modem - cisco router - asus router - client < works

Modem - cisco router - client < this works