Catálogo de publicaciones - libros

The Internet has seen a strong move to support overlay applications, which demand a coherent and integrated control in underlying heterogeneous networks in a scalable, resilient, and energy-efficient manner. A tighter integration of network management and overlay service functionality can lead to cross-layer optimization of operations and management, which is a promising approach as it offers a large business potential in operational perspectives for all players involved. Therefore, the objective of this paper is to present SmartenIT (Socially-aware Management of New Overlay Application Traffic combined with Energy Efficiency in the Internet), which targets at an incentive-compatible cross-layer network management for providers of overlay-based application (, cloud applications, content delivery, and social networks), network providers, and end-users. The goal is to ensure a QoE-awareness, by addressing accordingly load and traffic patterns or special application requirements, and exploiting at the same time social awareness (in terms of user relations and interests). Moreover, energy efficiency with respect to both end-user devices and underlying networking infrastructure is tackled to ensure an operationally efficient management. Incentive-compatible network management mechanisms for improving metrics on an inter-domain basis for ISPs serve as the major mechanism to deal with and investigate real-life scenarios.

The NEBULA Future Internet Architecture (FIA) project is focused on a future network that enables the vision of cloud computing [8,12] to be realized. With computation and storage moving to data centers, networking to these data centers must be several orders of magnitude more resilient for some applications to trust cloud computing and enable their move to the cloud.

Advancements concerning research and development of Future Networks (FNs) technologies have been introduced in recent years, such as network virtualization and software defined/driven network (SDN), information centric networking (ICN), cloud networking, autonomic management, and open connectivity. In this context ITU-T has developed initial Recommendations that lay out the essential directions for subsequent detailed work including further standardization of Future Networks. This paper presents the background and the context of FNs’ standardization, the results and future plans originated from the initial standardization work performed by ITU-T.

The question of whether there exists a minimal model for (ICN), that allows the bulk of features of various recent ICN architectures to be expressed as independent extensions to the model, is largely unexplored. Finding such would yield more orthogonality of the features, better adaptability to the changing multi-stakeholder environment of the Internet, and improved interoperability between ICN architectures.

In this paper, we introduce the concept of as a potential solution, which is based on the sharing of information and late binding service composition of decoupled entities as the essence of information-centrism. The specified framework is an abstract model without dependencies to low-level implementation details and achieves minimality by leaving naming and content security outside the core. This approach makes the experimentation of new features above and their implementation below faster and provides a possible evolutionary kernel for ICN.

The integration of Wireless Sensor Networks (WSNs) in the Future Internet has opened new opportunities for novel applications that meet the needs of modern societies. Virtualisation of the available resources and the services offered by WSNs enables their efficient sharing between diverse applications reducing costs. Responding to this challenge, the VITRO project has designed a WSN virtualization architecture that targets to decouple the physical sensor infrastructure from the applications running on top of it. In the concept of Virtual Sensor Network platform, the WSNs are capable of collaborating among each other (even if they belong to different administrator domains or comprise of heterogeneous platforms) to flexibly support service composition and fuel novel application development. To meet the diverse Quality of Service (QoS) requirements imposed by the different applications running on top of the same infrastructure, VITRO has designed, implemented and integrated a routing solution that enables the establishment of different routing paths per application, based on different routing criteria in order to optimize the performance aspect(s) of interest to each application. In this paper, we demonstrate how the VITRO routing solution could be employed in various use cases including smart homes/buildings, smart cities, smart business environments and security-related applications. We evaluate the achieved performance using computer simulation results and provide guidelines for prospective users.

With the evolution of the Internet, a huge number of real-time applications, like Voice over IP, has started to use IP as primary transmission medium. These services require high availability, which is not amongst the main features of today’s heterogeneous Internet where failures occur frequently. Unfortunately, the primary fast resilience scheme implemented in IP routers, Loop-Free Alternates (LFA), usually does not provide full protection against failures. Consequently, there has been a growing interest in LFA-based network optimization methods, aimed at tuning some aspect of the underlying IP topology to maximize the ratio of failure cases covered by LFA. The main goal of this chapter is to give a comprehensive overview of LFA and survey the related LFA network optimization methods, pointing out that these optimization tools can turn LFA into an easy-to-deploy yet highly effective IP fast resilience scheme.

The IP Multimedia Subsystem (IMS) is an architectural framework for delivering IP multimedia services. The appearance of Software Defined Networks (SDNs) concept in the IMS fabric can unleash the potential of the IMS technology which enables access agnostic services including applications like video-conferencing, multi-player gaming, white boarding all using an all-IP backbone. SDN requires some method for the control plane to communicate with the data plane. One such mechanism is OpenFlow which is a standard interface for controlling computer networking switches. This work presents our experience and implementation efforts in integrating OpenFlow mechanisms within IMS. Since this work also is done within the Future Internet Research and Experimentation domain, we also describe how we enabled our infrastructures with experimentation mechanisms.

Cloud computing market is in rapid expansion due to the opportunities to dynamically allocate a large amount of resources when needed and to pay only for their effective usage. However, many challenges, in terms of interoperability, performance guarantee, and dependability, should still be addressed to make cloud computing the right solution for companies. In this chapter we first discuss these challenges and then we present three components developed in the framework of the Contrail project: Contrail federation; SLA manager; and Virtual Execution Platform (VEP). These components provide solutions to guarantee interoperability in a cloud federation and to deploy distributed applications over a federation of heterogeneous cloud providers. The key to success of our solutions is the possibility to negotiate performance and security guarantees for an application and then map them on the physical resources.

The VISCERAL project is building a cloud-based evaluation framework for evaluating machine learning and information retrieval algorithms on large amounts of data. Instead of downloading data and running evaluations locally, the data will be centrally available on the cloud and algorithms to be evaluated will be programmed in computing instances on the cloud, effectively bringing the algorithms to the data. This approach allows evaluations to be performed on Terabytes of data without needing to consider the logistics of moving the data or storing the data on local infrastructure. After discussing the challenges of benchmarking on big data, the design of the VISCERAL system is presented, concentrating on the components for coordinating the participants in the benchmark and managing the ground truth creation. The first two benchmarks run on the VISCERAL framework will be on segmentation and retrieval of 3D medical images.

A service ecosystem is a virtual space ideally distributed across networks and geographical areas where vast numbers of services and other digital entities can coexist and converge to form solutions. In this paper we present experimental results showing the performance of two optimization models in service ecosystem. We describe the two models and how they operate under service ecosystem conditions. We emulate service ecosystem conditions in a multi-site federated Cloud and test the two models under different scenarios. The experimental results help us to determine strengths and weaknesses of the two optimization models enabling us to make recommendations for their use in different application domains.