Servizio Comunitario di Informazione in materia di Ricerca e Sviluppo - CORDIS

Results of interoperability testing, testbed experimentation and demonstration and network management

The main results regarding Interoperability testing are:
- The experience gained in the integration and testing of a Terabit IP Core Router (ALCATEL 7770 RCP) in large IP/WDM networks with MPLS, verifying the interoperability issues and gaining experience in the integration of this kind of equipment in IP networks.

- Experience in multicast PIM-SM, testing and verifying the main procedures related with multicasting in large IP networks, as RP's selection, trees instantiation and reliability.

The main results regarding Testbed Experimentation and Demonstration are:
- Experience on testing and integration of advanced multimedia services on large IP networks.

- Experience on configuring and testing QoS parameters in IP-MPLS networks, based on DiffServ specifications and verifying the interoperation with multicasting procedures.

- Knowledge of the main issues and strategic decisions in which the deployment of QoS and multicast policies are based.

- Experience on definition and deployment of a QoS/multicast scheme over a pan-European IP/WDM MPLS network, mapping and applying the scheme with advanced multimedia services deployed in the network.

The main result regarding network management is the availability of an OSS prototype (named AtriOSS) with the following main characteristics:
- Network performance management. It has a twofold goal. On the one hand, it aims to provide the proper tools to identify what quality related problems are affecting the network (essentially caused by congestion), where are they located and which is their impact on the carried traffic. Two sources of information will feed AtriOSS network performance databases. Local measurements taken by routers and end-to-end active measurements collected by distributed monitoring stations

- Service quality management. Post-processing of raw measurements allows estimating the actual quality delivered to customers. This is compared against SLA defined parameters; the contents of each signed SLA is represented by AtriOSS in the form of a structured, formal Service Level Specification (SLS). An SLS instance contains the quality parameters under agreement, the objective values for each parameter, penalty clauses if applicable and any other information that may affect the service (for instance, considerations on planned outages treatment).

- Network inventory. AtriOSS will provide a full view of the network under management. It will keep an inventory of both the physical (nodes, racks, cards, etc�) and the logical (LSPs, tunnels, subnetworks, meters, classifiers, etc.) network entities.

- Service provisioning. AtriOSS addresses some of the functions traditionally associated with this management layer as support for its SLA management capabilities. AtriOSS differentiates four phases in the provisioning process: service definition, service deployment, service subscription and service usage.

- Fault management. AtriOSS supports the collection, synchronisation, filtering, logging and presentation of alarms coming as SNMP notifications from network nodes. Alarms are modelled using X.733 [12] format.

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