LARCES_PBM: Um Framework para Gerenciamento de QoS e Seguran�a Baseado em Pol�ticas1 (original) (raw)
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Advanced applications, such as video conference, video on-demand, distance learning, among others, make use of computer networks as infrastructure support. However, in order to achieve an effective usage, the computer networks, on their turn, must offer some special capabilities to handle the applications needs. Quality of service (QoS) and multicast transmission support are some of the capabilities that must be supported. Besides the QoS and multicast support, it is necessary to supply a network management suitable to the applications expectations. Proposals that provide an individual solution for each of the capabilities have already been implemented. However, these solutions are not integrated, which makes the task of network management difficult and complex, due to the limitations inherent to non integrated systems. In this paper is showed a policy-based solution for integrated QoS and Multicast management using PCIMe.
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This paper introduces a protocol for the atomic deployment of management policies for computer networks with quality of services (QoS) support. Atomic protocols are needed when the deployment of a management policy partially works, configuring just a subset of the intended target devices, which is not enough to provide proper QoS for network users. Besides, policy partial deployment leads to the waste of network resources that could be better used. In addition to the protocol definition, this paper presents the protocol implementation in a policy-based network management architecture used to manage differentiated services (DiffServ) networks.
Uma Proposta para Fornecimento de QoS para Aplicacoes Legadas em Redes TCP/IP
Resumo: Fornecer QoS em redes de computadores atualmente é uma necessidade. Aplicações dependentes do tempo e de missão crítica precisam de garantias e qualidade dos serviços de rede utilizados. Em redes TCP/IP, ainda que tais serviços fossem implantados rapidamente, as aplicações já existentes não estariam preparadas para utilizar as facilidades de QoS. Os autores acreditam que seria interessante um gerente da rede poder programar requisitos de QoS para aplicações legadas, priorizando o tráfego oriundo de algumas aplicações (ex.: ferramenta de videoconferência) ou o de determinados hosts. Este artigo apresenta uma proposta para fornecimento de QoS para aplicações legadas em redes TCP/IP. A proposta se baseia na utilização da MIB RMON2 para determinar o comportamento dos hosts e das aplicações mais utilizadas por eles. A coleta de estatísticas ao longo do tempo permite a determinação de padrões de utilização da rede. Com base nessa baseline, realiza-se a programação do fornecimento de QoS da rede.
Proposta para Gerenciamento de Configuração de QoS no Backbone da RNP
O gerenciamento de redes de computadores baseadas no protocolo IP é uma tarefa complexa. Mais complexa ainda é a tarefa de gerenciamento de uma rede IP com garantias de QoS (Qualidade de Serviço). Hoje, o backbone da RNP (Rede Nacional de Pesquisa) possui e utiliza as facilidades para fornecimento de QoS de seus dispositivos, mas tais facilidades são configuradas manualmente sempre que reservas se fazem necessárias.
In this paper we present a layered architecture focused in introducing the ability of network self-configuration in answer to external events generated by IT management/monitoring systems. The proposed architecture is composed of a P2P layer, based on Autonomic Computing concepts, as well as a policy-based layer, similar to the traditional policy framework. In particular, we focus on the self-configuration of DiffServ in network devices to QoS provisioning. A case study considering the Grid Computing toolkit as event source is also presented.
Advanced applications, such as video conference, video on-demand, distance learning, among others, make use of computer networks as infrastructure support. However, in order to achieve an effective usage, the computer networks, on their turn, must offer some special capabilities to handle the applications needs. Quality of service (QoS) and multicast transmission support are some of the capabilities that must be supported. Besides the QoS and multicast support, it is necessary to supply a network management suitable to the applications expectations. Proposals that provide an individual solution for each of the capabilities have already been implemented. However, these solutions are not integrated, which makes the task of network management difficult and complex, due to the limitations inherent to non integrated systems. In this paper is showed a policy-based solution for integrated QoS and Multicast management using PCIMe. Resumo. Aplicac ¸˜ oes como videoconferencia, v´ ideo sob-de...
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2000
A distributed control plane provides dynamic connection control on layer 1 transport networks as optical and TDM networks. In this way, those networks can provide advanced connectivity services like VPNs. Such servi- ces are called Layer 1 VPN (L1VPN) services. In this work, we propose a policy-based architecture for L1VPN service management on GMPLS enabled transport networks. We also present
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This work presents a classification for the management of QoS-enabled networks. This classification shows that a solution for an integrated management is required. Thus, a model for integrated QoS management is proposed. Such model is analyzed through the implementation of the QAME (QoS-Aware Management Environment) prototype. Resumo. Este trabalho apresenta uma classificação para as pesquisas relacionadas à gerência de redes com QoS. Tal classificação permite verificar que uma solução de gerência integrada é necessária. Assim, é também apresentado um modelo para gerência integrada de QoS que é analisado através da implementação do protótipo QAME (QoS-Aware Management Environment).