IWQoS 2017

Producción CientíficaThe promises of SDN and NFV technologies to boost innovation and to reduce the time-to-market of new services is changing the way in which residential networks will be deployed, managed and maintained in the near future. New user-centric management models for residential networks combining SDN-based residential gateways and cloud technologies have already been proposed, providing flexibility and ease of deployment. Extending the scope of SDN technologies to optical access networks and bringing cloud technologies to the edge of the network enable the creation of advanced residential networks in which complex service function chains can be established to provide traffic differentiation. In this context, this paper defines a novel network management model based on a user-centric approach that allows residential users to define and control access network resources and the dynamic provision of traffic differentiation to fulfill QoS requirements.Ministerio de Economía, Industria y Competitividad (context of GREDOS project TEC2015 -67834- R, TEC2014-53071- C3 -2P and Elastic Networks TEC2015-71932- REDT

A survey on mobility-induced service migration in the fog, edge, and related computing paradigms

The final publication is available at ACM via http://dx.doi.org/10.1145/3326540With the advent of fog and edge computing paradigms, computation capabilities have been moved toward the edge of the network to support the requirements of highly demanding services. To ensure that the quality of such services is still met in the event of users’ mobility, migrating services across different computing nodes becomes essential. Several studies have emerged recently to address service migration in different edge-centric research areas, including fog computing, multi-access edge computing (MEC), cloudlets, and vehicular clouds. Since existing surveys in this area focus on either VM migration in general or migration in a single research field (e.g., MEC), the objective of this survey is to bring together studies from different, yet related, edge-centric research fields while capturing the different facets they addressed. More specifically, we examine the diversity characterizing the landscape of migration scenarios at the edge, present an objective-driven taxonomy of the literature, and highlight contributions that rather focused on architectural design and implementation. Finally, we identify a list of gaps and research opportunities based on the observation of the current state of the literature. One such opportunity lies in joining efforts from both networking and computing research communities to facilitate future research in this area.Peer ReviewedPreprin

Addressing the Challenges in Federating Edge Resources

This book chapter considers how Edge deployments can be brought to bear in a global context by federating them across multiple geographic regions to create a global Edge-based fabric that decentralizes data center computation. This is currently impractical, not only because of technical challenges, but is also shrouded by social, legal and geopolitical issues. In this chapter, we discuss two key challenges - networking and management in federating Edge deployments. Additionally, we consider resource and modeling challenges that will need to be addressed for a federated Edge.Comment: Book Chapter accepted to the Fog and Edge Computing: Principles and Paradigms; Editors Buyya, Sriram

Deploying and Evaluating OF@TEIN Access Center and Its Feasibility for Access Federation

For the emerging software-defined infrastructure, to be orchestrated from so-called logically centralized DevOps Tower, the shared accessibility of distributed playground resources and the timely interaction among operators and developers are highly required. In this paper, by taking OF@TEIN SDN-Cloud playground as a target environment, we discuss an access center effort to address the above requirements. In providing the developer presence via the proposed access center, the inherent heterogeneity of internationally dispersed OF@TEIN resources is setting a unique challenge to cope with the broad spectrum of link bandwidths and round-trip delays. The access capability of deployed access center is experimentally verified against a wide range of access network conditions, which would be extended for futuristic access federation with appropriate identity management and resources abstraction for multiple developers and operators

Demonstrating a unified ICN development and evaluation framework

Demo at ACM ICN conference 2014Information-Centric Networking solutions target world-wide deployment in the Internet. It is hence necessary to dispose of a development and evaluation environment which enables both controllable and realistic experimentation to thoroughly understand how ICN solutions would behave in real life deployment. In this demonstration, we present an ICN development and evaluation framework that combines emulation and live prototyping environments to provide ICN designers and implementers the means to build "beyond- prototype" ICN solutions. We will demonstrate the benefits of such integrated approach by showing how complete experimental studies can be carried out with minimum manual intervention and experiment setup overhead, in both emulation and live environments

An agile container-based approach to TaaS

Current cloud deployment scenarios imply a need for fast testing of user oriented software in diverse, hetero-geneous and often unknown hardware and network environ-ments, making it difficult to ensure optimal or reproducible in-site testing. The current paper proposes the use of container based lightweight virtualization with a ready-to-run, just-in-time deployment strategy in order to minimize time and resources needed for streamlined multicomponent prototyping in PaaS systems. To that end, we will study a specific case of use consisting of providing end users with pre-tested custom prepackaged and preconfigured software, guaranteeing the viability of the aforementioned custom software, the syntactical integrity of the provided deployment system, the availability of needed dependencies as well as the sanity check of the already deployed and running software. From an architectural stand-point, by using standard, common use deployment packages as Chef or Puppet hosted in parallellizable workloads over ready-to-run Docker images, we can minimize the time required for full-deployment multicomponent systems testing and valida-tion, as well as wrap the commonly provided features via a user-accessible RESTful API. The proposed infrastructure is currently available and freely accessible as part of the FIWARE EU initiative, and is open to third party collaboration and extension from a FOSS perspective