This OID returns the Relative Name (RN) of the source endpoint whose traffic is being mirrored by an FC SPAN monitoring session, given as a SnmpAdminString — the naming fragment that distinguishes this instance from its sibling FcMonSrcEp 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 FcMonSrcEp instance sits in the hierarchy without needing the full DN string on its own. For example, if two FcMonSrcEp instances exist under the same parent object, their RNs are what differentiate row one from row two when UCSM lists both under that parent.