Overlay Topology Based Inter-domain Qos Paths Building

The transport of multimedia flows over the internet needs to manage and control end to end quality of services (QoS) at transport level. Open issues still exist related to finding and maintaining QoS enabled paths through one or several independently administered domains. Among others, two tasks need to be solved: QoS routing or QoS enabled path finding and then maintaining these paths during data transfer. This paper deals with the problem of establishing QoS enabled aggregated multi-domain paths, to be later used for many individual streams. It is proposed a simple but extendable procedure, running at management overlay level, to find through communication between domain managers, several potential inter-domain end to end paths. Then, through resource negotiation process performed also in the management plane, QoS enabled aggregated pipes are established.