Dynamic Metric OSPF-Based Routing Protocol for Software Defined Networks

[EN] Routing protocols are needed in networking to find the optimal path to reach the destination. However, networks are changing both their use finality and their technology. Paradigms like Software Defined Networks (SDNs) introduce the possibility and the necessity to improve the routing protocols. In this paper, a modification of the Open Shortest Path First (OSPF) routing protocol is proposed in order to allow the protocol to change the metric calculation dynamically according to the network requirements. Experiments, which compare our proposal against the OSPF protocol, are performed in five different scenarios. In these scenarios, the performance of the multimedia traffic has been increased 33% in terms of bandwidth utilization, 80% of loss rate reduction and delay reduction on VoIP communications.This work has been partially supported by the "Ministerio de Educacion, Cultura y Deporte", through the "Ayudas para contratos predoctorales de Formacion del Profesorado Universitario FPU (Convocatoria 2015)". Grant No. FPU15/06837, by the "Ministerio de Economia y Competitividad", through the "Convocatoria 2014. Proyectos I+D - Programa Estatal de Investigacion Cientifica y Tecnica de Excelencia" in the "Subprograma Estatal de Generacion de Conocimiento", project TIN2014-57991-C3-1-P, through the "Convocatoria 2016 - Proyectos I+D+I - Programa Estatal De Investigacion, Desarrollo e Innovacion Orientada a los retos de la sociedad" (Project TEC2016-76795-C6-4-R) and through the "Convocatoria 2017 - Proyectos I+D+I - Programa Estatal de Investigacion, Desarrollo e Innovacion, convocatoria excelencia" (Project TIN2017-84802-C2-1-P).Rego Mañez, A.; Sendra, S.; Jimenez, JM.; Lloret, J. (2019). Dynamic Metric OSPF-Based Routing Protocol for Software Defined Networks. Cluster Computing. 22(3):705-720. https://doi.org/10.1007/s10586-018-2875-7S705720223Coltun, R., Ferguson, D., Moy, J.: OSPF for IPv6, RFC 5340. https://doi.org/10.17487/rfc5340 , July 2008. https://rfc-editor.org/rfc/rfc5340.txtSoftware-Defined Networking (SDN) Definition. https://www.opennetworking.org/sdn-definition/ . 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