An enhanced dynamic multilayer routing for networks with protection requirements

This paper presents a new enhanced dynamic and multi-layer protection (DMP) routing scheme that considers cooperation between packet and wavelength switching domain in order to minimize the resource consumption. The paper describes the architecture of the multilayer network scenario and compares the proposed algorithm with other routing mechanisms applying protection at the IP/multi-protocol label switching (MPLS) layer or at the optical layer. Simulation results show that DMP reduces the number of optical-electrical-optical (o-e-o) operations and makes an efficient use of the network resources compared to non-multilayer proposals.