This OID returns the Relative Name (RN) of an FC SAN endpoint — one FC interface participating in the fabric interconnect's uplink connection to the external SAN, given as a SnmpAdminString — the naming fragment that distinguishes this instance from its sibling FcSanEp objects under the same parent in UCSM's object tree. Admins use the RN, combined with the parent's DN, to reconstruct exactly where this FcSanEp instance sits in the hierarchy without needing the full DN string on its own. For example, if two FcSanEp instances exist under the same parent object, their RNs are what differentiate row one from row two when UCSM lists both under that parent.