Advance reservations for service-aware GMPLS-based optical networks

In service-oriented networks, cooperation between users, applications and network tends to come closer. With this objective, new architectures arise to cope with the upcoming demands. Of great importance is the definition of the proper interfaces and network services. One of these new services is known as the Advance Reservation Service. This service allows prior reservation of network resources in order to provide guaranteed client connections. The introduction of advance reservations in heterogeneous transport networks imposes the need to find new mechanisms that consider temporal characteristics of scheduled connections and their impact on immediate connections. In this paper, we investigate these issues, propose novel algorithms to improve overall network performance, and describe the implementation carried out over the ASON/GMPLS CARISMA testbed.