Otimização de métricas de rede de operadora de telecomunicações com roteamento por segmentos e engenharia de tráfego

• Ano de defesa: 2019
• Autor(a) principal: Silvério, Antonio José
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Rio de Janeiro; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; Programa de Pós-Graduação em Engenharia Elétrica; UFRJ
• Palavras-chave em Português: Engenharia elétrica; Protocolos de roteamento; Roteamento pela origem; Engenharia de tráfego; Gerenciamento de redes; Redes definidas por software; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: http://hdl.handle.net/11422/12288

Currently, telecommunication operators’s main problems include managing and configuring a large number of tunnels in the IP/MPLS network edge and core routers, resulting an increasing of router flow states, and also a complexity of control protocol maintenance, and optimization of network resources with different metrics. In this scenario, dynamic changes and network failures requires constantly a manual tunnel planning and reconfiguration to a predictable controlled traffic routing. In this sense, segment routing is a technology that simplifies routing and the configuration of these networks. Segment routing is accomplished by combining segments that finds a path for traffic demands, however, segments can be reused, reducing the number of states in the network. Thus, this thesis formulates a two-step optimization problem, considering a backbone network with segment routing and traffic engineering. The model has the purpose of distributing traffic flows considering the link load and different traffic engineering parameters established by the telecommunications operator, minimizing the number of states or segments per router. Results based on real examples are presented, demonstrating the state-of-the-art model benefits of current segment routing modeling proposals, such as addressing multiple network metric objectives.