This paper presents the architecture of a policybased network management system designed specifically for Quality of Service management, where high level business policies are modeled as ECA (Event-Condition-Action) rules. Specifically, the system is mainly based on the policy architecture being proposed by the IETF (Internet Engineering Task Force), DMTF (Distributed Management Task Force), and TMF (TeleManagement Forum) standardization bodies. This work proposes a novel approach for policy condition evaluation using fuzzy logic. The fuzzy controller has the ability to examine policy conditions differently from default condition analyzers that employ simple conditions formed by a set of (IFs, ANDs and ORs), allowing the consideration and correlation of several input variables before taking decisions for the execution of policy actions. The system have been implemented and evaluated over a test bed network formed by Cisco® routers.
Este artigo descreve uma arquitetura para controle de redes ópticas que possibilita o aprovisionamento de circuitos ópticos fim a fim. Para isso, foi desenvolvida uma aplicação northbound pelo CPQD que utiliza Transport API (TAPI) e RESTCONF para interagir com o controlador ONOS e solicitar serviços, incluindo o aprovisionamento e desaprovisionamento de circuitos ópticos. Os testes foram realizados utilizando um emulador de transponders ópticos, desenvolvido pelo projeto ODTN do ONF, com uma extensão, desenvolvida pela RNP, para a inclusão do plano de dados. O desenvolvimento desta aplicação engloba os conceitos de SDN e desagregação e permite, através de um ambiente emulado, uma análise prévia de possíveis trabalhos futuros a serem realizados em testbeds com equipamentos físicos.
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