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

Architecture & Implementation of a Testbeds Repository

Federations of testbeds have an intrinsic characteristic: they are composed of heterogeneous resources and services residing in different geographic locations. To support description of these resources, there is a need for a common repository to be made available to the overall Panlab testbed federation architecture. In creating and integrating this repository, a number of design decisions were made to produce a flexible solution. We describe the structure of the repository software architecture and discuss the information model and derived data model. Finally, implementation details are further described at a functional level based on observations during the work carried out

Technical infrastructure for a Pan-European federation of testbeds

The Pan-European laboratory - Panlab - is based on federation of distributed testbeds that are interconnected, providing access to required platforms, networks and services for broad interoperability testing and enabling the trial and evaluation of service concepts, technologies, system solutions and business models. In this context a testbed federation is the interconnection of two or more independent testbeds for the temporary creation of a richer environment for testing and experimentation, and for the increased multilateral benefit of the users of the individual independent testbeds. The technical infrastructure that supports the federation is based on a web service through which available testing resources can be queried and requested. The available resources are stored in a repositor y, and a processing engine is able to identify, locate and provision the requested testing infrastructure, based on the testing users' requirements. The concept is implemented using a gateway approach at the border of each federated testbed. Each testbed is an independent administrative domain and implements a reference point specification in its gateway