Ryan,
You can block specific protocols to an interface, allowing only the one you want such as CIFS. Please see this link and look towards the bottom of page 35 and onto 36 for details. https://library.netapp.com/ecm/ecm_get_file/ECMM1277792
See if this answers your question.
-Mark
Mark Clayton
Principal Architect, NCDA|NCIE, NetApp A-Team
Lenovo
919-522-3767 Mobile
mclayton@netapp.com
@storageaddict