L1VPN services over inter-domain environments

This article presents the main features of Layer 1 L1VPN Virtual-Private Networks. It focuses particularly on aspects such as the provision and modeling of services within inter-domain environments, the supply of a Layer 1 VPN, the existent and proposed architectures, and the type of services offered through Networking Technologies together with Optical Transmission. Interaction between these aspects and new findings resulting from studies conducted by experts are analyzed.