I have a wrt1900acs set up from stock, fully working. I downloaded the right image of openwrt (lede-mvebu-cortexa9-linksys-wrt1900acs-squashfs-factory) and it flashed without problems. But from the start I have no internet connection and have a hard time finding some step by step guides to help me as I'm sort of a router noop...
I have a PPPoe account and i put the details in but no luck. The router just did not connect to the net.
On stock firmware I had to enable vlan and setup the wan but I cant find out hoe to do that properly on openwrt.
I've managed to get DHCP internet connection after I made the changes to the Vlan but still I cant connect with a PPPoe account.
I get an error message auth_failedtopeer (or something similar) but I have checked and all my details are correct so I'm a little lost. Everything works when I use the DHCP protocol.
I installed mine using this youtube video as a guide (mine was new out of the box) and it worked just fine. I know it's a version old, but is it any help?