Cisco Systems Cisco Systems Ericsson This document defines protocol mapping extensions for the Semantic Definition Format (SDF) to enable mapping of protocol-agnostic SDF affordances to protocol-specific operations. The protocol mapping mechanism allows SDF models to specify how properties, actions, and events should be accessed using a specific protocol. This document defines protocol mappings for Bluetooth Low Energy and Zigbee, and the mechanism can be extended to other protocols such as HTTP and CoAP. This document also describes a method to extend SCIM with an SDF model mapping.