This document describes a method for controlling two specific types of Ethernet switching via a Generalized Multi-Protocol Label Switching (GMPLS) based User-Network Interface (UNI). This document supports the types of switching required to implied by the Ethernet services that have been defined in the context of the Metro Ethernet Forum (MEF) and International Telecommunication Union (ITU) G.8011. This document is the UNI companion to "Generalized MPLS (GMPLS) Support For Metro Ethernet Forum and G.8011 Ethernet Service Switching". This document does not define or limit the underlying intra-domain or Internal NNI (I-NNI) technology used to support the UNI.Contents