Obiettivo
Main Objective
The main objectives of DIANA are to develop, integrate, validate and demonstrate resource reservation and traffic control functionalities which seamlessly interoperate between ATM and IP networks to achieve QoS. At the boundary between the ATM and IP domains, DIANA aims to translate between RSVP and ATM signalling, thereby supporting the different QoS specifications of IP and ATM.
The developments in DIANA allow the investigation of different approaches for the convergence of RSVP/IP and ATM, as well as providing an insight into the feasibility and efficiency of this topology and the optimum sizes of the two domains. Fast topology changes can be achieved by adapting the prototype implementation and moving end systems from one domain to the other.
Technical Approach
The generic network model serves as the reference for the specification, implementation and evaluation of the resource management, protocol translation and QoS sensitive applications that DIANA deals with. The control plane of the Integration Unit is assigned the key role for prototyping the signalling translation from RSVP to ATM signalling and vice versa, for the mapping of QoS specifications given by the respective flow descriptors in the RSVP/IP domain and traffic contracts in the ATM domain, and for the allocation of ATM virtual connections for IP flows. Inside, a modular design and interfaces to all relevant control functions will allow work on several approaches experimenting with different schemes. It is important to note that DIANA does not anticipate using ATM merely as a backbone solution or preclude RSVP/IP from being used in wide scale networks.
The distinction between native ATM and RSVP/IP is rather seen as a logical and not a topological one. For practical reasons, ATM will preferably be used in the IP domain as well, but merely as a link layer technology offering high, guaranteed bandwidth. Hence, ATM attached hosts at the same site may belong to both the RSVP/IP domain and the native ATM domain depending upon whether they run RSVP/IP or ATM applications and stacks. This means that the domains can be extended in either the IP or the ATM direction in order to investigate whether different levels of IP or ATM usage scale well, where guaranteed service has to be favoured over best-effort and, if resource reservation is used, which strategies are most promising. DIANA also addresses intra-domain resource management.
Summary of Trial
The Integration Unit, the implementation of which is the central part of DIANA, offers an interoperable control framework, which allows different approaches towards the integration of IP and ATM to be investigated, dependent upon network scale, service and customer profile.
The DIANA platform will thus be used for two purposes:
-To demonstrate the interoperability of ATM and IP applications through heterogeneous networks with QoS transparently enforced across domain boundaries.
-To investigate the performance and scalability of different combinations of IP and ATM services and protocols as well as several levels of intelligence in the Integration Unit.
Both the testbed network in Basel (acting also as a permanent showcase) and the temporary interconnection of several Integration Units using the ATM infrastructure in Switzerland, Italy and Germany will be used for these purposes.
Expected Achievements
-Specification of a consistent traffic control framework spanning both IP and ATM domains.
-Design of a flexible Integration Unit prototype which allows the investigation of different approaches to the interworking of IP and ATM networks based on QoS and service differentiation.
-Provision of an open network infrastructure including real-time IP and ATM applications to validate and demonstrate QoS in heterogeneous IP and ATM networks.
Expected Impact
The project will prove that the implemented technique is efficient and scaleable in the support of QoS for real-time and non real-time applications and heterogeneous network and service scenarios. The results will be contributed to Guidelines aimed at recipients involved with the design of networks combining ATM and IP based equipment, services and applications; showing how the returns on investment in both technologies can be achieved.
Main contributions to the programme objectives:
Main deliverables
The development of an IP / ATM Integration Unit, on which several techniques for interworking between these technologies have been trialled. European expertise for queueing schemes, DiffServ implementation and ATM signalling based on LINUX is available through this project.
Contribution to the programme
Advancing knowledge in key aspects of IP and ATM interoperability, which is feeding directly and indirectly into both specifications (especially IETF) and the development of commercial products from European manufacturers.
Key Issues
-Incorporation of IP-based QoS reservation and service differentiation schemes.
-Mapping of IP and ATM service and QoS specifications.
-Validation and extension of the RSVP protocol (CAC, packet scheduling, and IP flow to ATM VC conversion - including signalling).
-Optimum exploitation of Internet and ATM networks for their appropriate capabilities.
-Development of an IP/ATM Integration Unit.
Campo scientifico (EuroSciVoc)
CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.
CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.
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Meccanismo di finanziamento
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Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.
Coordinatore
3018 Berne
Svizzera
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