sorry bro! i was outsite town on some "Vacations trip" so not laptop allowed o any smartphone xD, ok if you gonna treat like a switch you does not have to have any special config, just trunk, trunk and ready to roll on the layer 2 sw, if it gonna be a firewall/router, you should prepare ir like a dhcp relay agent to work, this is gonna be in almost case the setup PFSENSEBOX –->> MikroTikBox(as firewall or router with dhcp relay included) --->> layer 2 sw, please check out this document of mikrotik, http://wiki.mikrotik.com/wiki/Manual:IP/DHCP_Relay and related, with a mikrotik cheap? more than pfsense? lol i love the product even in some case have failed me