Router settings for Fiber

Hello,

I am looking for help to configure my RouterBoard to use the SFP to my managed 3com SFP switch.

I want the the MikroTik to not have a bridge, and only cable to that will be to the cable modem. I want the SFP to go to the switch, and I want the switch to handle the traffic for all things and let the MikroTik give out DHCP.

How can this be done? Thanks!