Uma arquitetura para gerenciamento de QoS baseado em políticas

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

The communication convergence (voice, video, data) is changing the way to plan, manage and maintain the network infrastructures. In this new concept of networking an important element to be managed is quality of service (QoS). The QoS management is a complex task and includes administrative concepts, such as: resource allocation, user levels assignment, differentiation of applications and billing. Policy-Based Network Management (PBNM) has proved to be an efficient strategy for simplifying the administration of complex systems in which, normally, there are heterogeneous devices and large variety of services. This work proposes a policy-based network management framework for automating the processes of generating and distributing DiffServ configuration to network devices. The framework is based on IETF standards and introduces a new high-level policy model for simplifying the process of defining QoS policies. The framework is defined in three layers: a high-level policy model, a deviceindependent policy model and a device-dependent policy model. The work explains the proposed models and describes the policy translation processes. Also, three different strategies are discussed and evaluated for the policy server to dynamically update the device configuration.

ASSUNTO(S)

informática redes de computação - gerência ciencia da computacao arquitetura de redes de computadores

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