This talk will introduce P2PSIP (Peer-to-peer Session Initiation Protocol) technologies, including the most common protocols and algorithms. The talk will also discuss the performance of these technologies in different network settings and the tradeoffs associated with deploying P2PSIP systems. Additionally, the talk will cover issues related to security and NAT traversal.

Marco Ajmone Marsan holds a double appointment as Chief Researcher at IMDEA Networks (Spain) and Full Professor at the Department of Electronics (Dipartimento di Elettronica) of the Politecnico di Torino (Polytechnic University of Turin) (Italy). He is the founder of the Telecommunication Networks Group, one of the top research groups in networking in Europe, based at the Politecnico di Torino.

Programa: 09:00 – 09:30 Bienvenida y registro de asistentes 09:30 – 09:50 Apertura de la jornada D. Arturo Azcorra, Director General, CDTI D. Francisco Marín, Presidente Área de Actuación de Innovación Tecnológica, AETIC D. Albert Banchs, Director, Institute IMDEA Networks D. Carlos Balaguer, Vicerrector de Investigación, UC3M 09:50 – 10:15 Presentaciones Presentación del Institute IMDEA Networks, D. Albert Banchs (  Descargar presentación 2006 Kb ) Presentación del departamento de I+D+i de AETIC, D. Juan Gascón, Director de Contenidos Digitales e I+D+i de AETIC (  Descargar presentación 2256 Kb ) 10:15 – 11:00 Bloque “Eficiencia Energética” Energy-efficient Networking at Institute IMDEA Networks D. Antonio Fernández Anta, Senior Researcher, Institute IMDEA Networks (  Descargar presentación 160 Kb ) TELVENT Energía D. Francisco Romero, Director Desarrollo de Negocio (  Descargar presentación 1.757 Kb ) INDRA Dña. Marta Arias, Gerente Área de Eficiencia Energética (  Descargar presentación 538 Kb )

Energy conservation is drawing increasing attention in data networking. One school of thought believes that a dominant amount of energy saving comes from turning off network elements. The difficulty is that transitioning between the active and sleeping modes consumes considerable energy and time. This results in an obvious trade-off between saving energy and provisioning performance guarantees such as end-to-end delays.

Ponente:  Lugar:  Fecha: 19 de octubre, 2010, 16:00h Organización:   

Coordinación: Dirección General de Universidades e Investigación, a través de la Fundación madri+d, Comunidad de Madrid La iniciativa IMDEA participará en la actividad “Por qué soy científico”, por medio de la intervención los directores de cada uno de los ocho institutos que la componen. Por qué soy científico Organizador: Instituto Madrileño de Estudios Avanzados (IMDEA) Horario: De 18:00 a 19:30 Lugar de celebración y accesos: Medialab Prado C/ Alameda, 15. Madrid Metro: Atocha y Cercanías: Atocha Autobuses: 6, 10, 14, 19, 26, 27, 32, 34, 37 y 45

Dr. Kenichi Mase, Dr. Toshini Tsuboi and Dr. Hiromi Ueda will visit Institute IMDEA Networkson Monday September 20th and will take the opportunity to present their research lines. The overall talk will last about 45 minutes, including questions and answers, and it will be divided in the following three 15 minute slots:

It this talk I will start with a brief overview of the research activities of our group at the University of New South Wales, Sydney, Australia, in the areas of core network switching, body area networking, and security for wireless sensor networks. I will then focus on the specific problem of sizing buffers in core routers, highlighting constraints posed by power consumption and optical storage technology. We investigate the impact of router buffer size on the characteristics of TCP traffic and its co-existence with open-loop traffic. We propose and analyze the efficacy of techniques such as traffic conditioning and forward error correction in managing contention loss in the network core. Finally, we speculate on the feasibility of a future Internet core with near-zero buffers.

Multimedia content delivery is projected to be the biggest bandwidth consumer of the future Internet. For many years, the mechanism for content delivery envisioned by the networking community is network multicast. Multicasting emulates traditional TV broadcasting; it is designed to be network efficient. But it falls short in at least two aspects: (a) it does not maximize throughput for content delivery; (b) like TV broadcasting, it does not provide on-demand access (i.e. Video-on-Demand).

Cloud computing has great potential to change how enterprises run and manage their IT systems. Cloud computing platforms provide customers with flexible, on demand resources at low cost. However, while existing offerings are useful for providing basic computation and storage resources, they fail to provide the security and network controls that enterprise customers need. The CloudNet architecture provides more comprehensive control over network resources and security for users by utilizing Virtual Private Networks to securely and seamlessly link cloud and enterprise sites. CloudNet incorporates VM migration over WANs. CloudNet's capability for WAN migration transforms the scope of provisioning from a single data center to multiple data centers spread across the country or the world. This will open new opportunities for cross data center load balancing and dynamic application placement based on metrics like latency to users or energy cost. It also provides the foundation for a range of Disaster Recovery solutions. (The talk is based on joint work with Timothy Wood (UMass), Jacobus van der Merwe (AT&T Labs Research), and Prashant Shenoy (UMass) ).