Instantiation of IETF Network Slices in service providers networks

The IETF has produced several YANG data models to support the Software-Defined Networking and Network Slice Architecture. This document describes the relationship between the abstract (generic, or base) Service Models utilized for the Network Slices requests and the Network Models (e.g. L3NM, L2NM). This document describes the communication between the Network Slice Controller and a network controller for IETF network slice creation. The YANG service models available for network slicing provide a customer-oriented view of the network. Thus, once the Network Slice controller (NSC)receives a request, it needs to expand it to accomplish the specific parameters expected by the network controller. The network models are analyzed in terms of how they can satisfy the IETF Network Slice requirements. Identified gaps on existing models are reported.