Multilayer network design

Hegemony of Packet on business and residential services is a fact for several years. These services account for main part of traffic carried by transmission network in regional, national and international contexts regarding sizing. IP and transmission network architectures are closely connected for TCO savings as well as for availability and carbon footprint improvement. Some multilayer techno-economic studies underline the benefit to take into account at the same time packet and transmission network issues. Moreover, at medium term, an efficient convergence between packet and transmission layers can improve flexibility and scalability of the global transport network. Several solutions to reach such convergence are considered and analyzed.