InterDigital Inc. InterDigital Inc. University College London Huawei Technologies Huawei Technologies NTT, Corp. National Institute of Information and Communications Technology This document defines the network slice (NS) subnet as a general management plane concept that augments a baseline YANG network slice model with management attributes and operations enabling interconnections (or stitching) between network slices. The description of NS subnet interconnections is technology agnostic, and is not tied to a particular implementation of the interconnection in data plane.