Maurício F. Magalhães

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The networking equipment market is being transformed by the need for greater openness and flexibility, not only for research purposes but also for in-house innovation by the equipment owners. In contrast to networking gear following the model of computer mainframes, where closed software runs on proprietary hardware, the software-defined networking approach(More)
This work proposes two different distributed strategies for provisioning lightpaths in the presence of optical physical-layer impairments in GMPLS networks. The first approach is a more classical one, which introduces new extensions to the OSPF-TE routing protocol. The other approach makes use of an Ant Colony Optimization (ACO) algorithm to adaptively(More)
In response to the limitations of the Internet architecture when used for applications for which it was not originally designed, a series of <i>clean slate</i> efforts have emerged to shape the so-called <i>future Internet</i>. Recently, visionary voices have advised a shift in the networking problem under research, moving from seamless host-reachability to(More)
Computing history has shown that open, multi-layer hardware and software stacks encourage innovation and bring costs down. Only recently this trend is meeting the networking world with the availability of entire open source networking stacks being closer than ever. Towards this goal, we are working on QuagFlow, a transparent interplay between the popular(More)
Experimental research in Information-Centric Networking (ICN) is crucial to the evaluation of new architectural proposals that bring named pieces of content as the main element of networks. This paper presents a new fast prototyping tool for the NDN (Named Data Networking) model, Mini-CCNx, that aims at filling an existing gap in generally available(More)
Today, the most important aspect related with the Internet architecture is its ossification representing the difficulties to introduce evolutions in the architecture as a way to meet the demands posed by the new requirements as mobility, security, heterogeneity, etc. In this paper we discuss how the network virtualization can be used to support the(More)
This work presents a service-oriented architecture for interdomain service provisioning in optical networks. The architecture introduces a service layer that concentrates all the interactions among domains necessary for service provisioning. A service layer is an alternative to the GMPLS (Generalized Multiprotocol Label Switching) architecture, but without(More)
This paper presents REAL (Remotely Accessible Laboratory), a virtual laboratory accessible through the Internet. The objective of REAL is to provide remote access to a mobile robots infrastructure. REAL has been implemented as a new generation telecommunication service, not as a commonplace World Wide Web (WWW) application. As such, it employs a(More)
We introduce the Deletable Bloom filter (DlBF) as a new spin on the popular data structure based on compactly encoding the information of where collisions happen when inserting elements. The DlBF design enables false-negative-free deletions at a fraction of the cost in memory consumption, which turns to be appealing for certain probabilistic filter(More)