This Recommendation describes the management requirements and the information model for network elements (NEs) that contain optical media layer functions defined by the ITU-T equipment Recommendation based on the [ITU-T G.807] architecture, e.g., [ITU-T G.798]. The management requirements are based on [ITU-T G.7710] and the information model is based on [ITU-T G.7711] object classes. This version of G.876 provides only the optical media layer management requirements and information model for the optical transport network (OTN).