RT info:eu-repo/semantics/conferenceObject T1 Design of VNF-Mapping with node protection in WDM metro networks A1 Ruiz Pérez, Lidia A1 Durán Barroso, Ramón José A1 Miguel Jiménez, Ignacio de A1 Merayo Álvarez, Noemí A1 Fernández Reguero, Patricia A1 Lorenzo Toledo, Rubén Mateo A1 Abril Domingo, Evaristo José K1 Network function virtualization K1 Virtualización de funciones de red AB Network Function Virtualization (NFV) is considered to be one of the enabling technologies for 5G. NFV poses several challenges, like deciding the virtual network function (VNF) placement and chaining, and adding backup resources to guarantee the survivability of service chains. In this paper, we propose a genetic algorithm that jointly solves the VNF-placement, chaining and virtual topology design problem in WDM metro ring network, with the additional capacity of providing node protection. The simulation results show how important is to solve all of these subproblems jointly, as well as the benefits of using shared VNF and network resources between backup instances in order to reduce both the service blocking ratio and the number of active CPUs. PB Springer Link SN 978-3-030-36442-7 YR 2019 FD 2019 LK https://uvadoc.uva.es/handle/10324/52842 UL https://uvadoc.uva.es/handle/10324/52842 LA eng NO Li, Qingshan; Song, Shengli; Li, Rui; Xu, Yueshen; Xi, Wei; Gao, Honghao. International Conference on Broadband Communications, Networks and Systems. Xi’an, China: Springer, 2019, p. 285–298 NO Producción Científica DS UVaDOC RD 01-may-2024