I have a smart wifi and linksys router setup. Theres nothing much to configure about your linksys router. My linksys router configuration is simply like this...
Internet Connection Type: Automatic Configuration - DHCP
DHCP Server: Enabled
The only thing is that SMART Wifi/Bro will detect if you add / change a router. If it detects a new router, when you browse the internet, the browser will automatically lead you back to their smart portal/webpage. Just log-in with your user name and password... then just follow the instructions on the screen. After that, all you have to do is reboot (turn off then turn it back on) the router.