configure second device via ETH2 port

Hello.
I´d like to connect a mikrotik cap lite to a Cap Ac through the ETH2 port.
I´ve connected it, and cap lite is powered on, but I can´t surf the web because it doesn´t assign any ip to me.
What must I do?
Thanks

Is the capac also acting as a router and if not what is attached to?
Provide the /export config on the capac (hide any public IPs if the router).