Hernández Gutiérrez, José AlbertoQuagliotti, MarcoSerra, LauraLuque, LourdesLópez Da Silva, RafaelRafel, AlbertGonzalez De Dios, OscarLópez, VíctorEira, AntonioCasellas, RamónLord, AndrewPedro, JoaoLarrabeiti López, David2021-03-012021-12-012020-12-01Alberto Hernández, J., Quagliotti, M., Serra, L., Luque, L., López da Silva, R., Rafel, A., González de Dios, Ó., López, V., Eira, A., Casellas, R., Lord, A., Pedro, J., Larrabeiti, D. (2020). Comprehensive model for technoeconomic studies of next-generation central offices for metro networks. Journal of Optical Communications and Networking, 12(12), 414-427.1943-0620https://hdl.handle.net/10016/32058This paper introduces a novel and simplified cost model for designing and evaluating a Central Office Rearchitected as a Datacenter (CORD). The model includes equipment and elements for the realization of optical, packet switching, and data center parts with a special focus not only on relative costs but also on power consumption figures. The cost model is then applied to the design and comparison of a metropolitan area network (MAN) including both aggregation and metrocore nodes following several MAN node architectures based on CORD-like leaf-and-spine fabric. In particular, equipment disaggregation at the Central Offices, both on the packet-switching and optical components, can provide important cost savings to telco operators. On the other hand, incorporating computing/storage capabilities in the MAN for the realization of multiaccess edge computing (MEC) has a significant impact on the total network cost but especially on power consumption.14eng© 2020 Optical Society of Americaresearch articleTelecomunicacioneshttps://doi.org/10.1364/JOCN.402167open access41412427Journal of Optical Communications and Networking12AR/0000026279