Laercio Cruvinel

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0140-3664/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.comcom.2010.12.010 ⇑ Corresponding author. Tel.: +351 962510122; fax E-mail addresses: lcruvinel@tagus.inesc-id.pt (L. utl.pt (T. Vazão). In this article we describe and present results of using an architecture that leverages the potential of IETF’s Differentiated Services giving the border of(More)
IETF's Differentiated Services (DiffServ) is a scalable, distributed architecture aimed to provide a fair distribution of network resources according to expected levels of service. However, variable traffic and performance expectations may require an adjustment of management policies so that congestion situations are avoided and service parameters are met.(More)
In this paper, we present DDQoS, or Distributed Dynamic Quality of Service, a novel architecture which uses QoS-configured routers as a support layer for a distributed approach on policy-based management system. The main purpose of this work is to model and test a distributed framework for globally (in a domain network) controlling QoS traffic classes(More)
Quality of service for video and audio transmissions over IP is bound by the best-effort nature of this protocol. The road for achieving optimal behavior for selected flows of traffic includes better controlling and tuning one or more elements of the transmission - the characteristics of the traffic itself or the supporting hardware and software. This(More)
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