This read-create enumerated value selects the mechanism used to identify the ENode (for a VF_Port VFC) or remote-FCF (for a VE_Port VFC) associated with this static VFC interface, choosing between interfaceIndex(1) for a directly connected Ethernet interface or macAddress(2) for identification by source MAC address over a Layer-2 network. An admin picks this based on the physical topology -- direct connection versus reachability across an Ethernet fabric -- to determine how the binding fields are interpreted. For example, selecting macAddress(2) means hh3cFCoEStaticVfcBindMACAddress, not hh3cFCoEStaticVfcBindIfIndex, is used to match incoming FIP frames to this VFC.