This deliverable provides the specification of traffic handling for the second trial. Three main objectives are covered:

1) to fix the shortcomings in first trial specification, taking into account the valuable experi-ence of the implementation work and especially of the trials

2) to enhance the first trial specification with new outstanding features:

• Measurement Based Admission Control
• Control loops from Measurement into Provisioning and Resource Pool · Inter-domain Resource Reservation

3) to provide a critical analysis and to review some aspects of first trial specifications:

• Choice of network services and traffic classes
• Scheduling and queue management mechanisms

The most important innovations in second trial are the introduction of feedback in the traffic handling and the introduction of inter-domain resource management.

In the first trial specification, a feed-forward relation between the Traffic Handling components (Provisioning, Resource Pools, the Admission Control, and the Traffic Control) was defined. The measurement architecture was only used to have a monitoring of the network status. In the second trial architecture the measurements are reported in real time to the Admission Control and to Provisioning, realising a Measurement Based Admission Control and a Control Loop from Measurements to Provisioning.

The inter-domain resource reservation is supported by defining proper damping mechanisms. These mechanisms avoid the propagation of resource reservation across autonomous systems in order to achieve a scalable solution.