Proposta de extensão do protocolo PCE considerando parâmetros de QoT para roteamento inter-domínios em redes GMPLS. / Proposal for a PCE protocol extension considering QoT parameters to be used in inter-domain routing in GMPLS networks.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This thesis presents an analysis of Path Computation Element Architecture (PCE) as an alternative to be implemented in heterogeneous network inter-domain routing, in other words, environments where optical domains are integrated with the electronic domains of conventional networks. Also, the ability of PCE to manage issues regarding the transmission quality of the optical signal, the QoT (Quality of Transmission), is presented. Objectives and functionality of the PCE mechanism in integrated networks is detailed. Concepts and definitions regarding optical networks and their main elements, the aim of interconnection with conventional networks to build a unified and integrated network, the role of control planes, and the main routing mechanisms are also presented. The analysis of the PCE was focused on the behavior of its main protocol, called PCE Protocol. Specifically, the analysis was performed on both its request and response messages, in addition, the interference in the traffic of the links where these messages had been introduced was also analyzed. Afterwards, an extension of the PCE Protocol parameters was proposed based on the study of optical transmission characteristics, with the aim of meeting specific QoT requirements. From these definitions, further analyses of the impact on the traffic in links with different bandwidths were performed, using the PCE protocol, with and without the proposed extension, allowing a comparison between them.

ASSUNTO(S)

elemento de computação de rotas quality of transmission (qot) roteamento pce redes ópticas route computation element optical networks routing qualidade de transmissão (qot)

ACESSO AO ARTIGO

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