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This paper presents a testbed implementation of an inter-carrier GMPLS (Generalized Multi Protocol Label Switching) service architecture recently proposed. This architecture couples the Path Computation Element (PCE)-based control plane with a service plane managing discovery, composition and activation functions of inter-carrier service elements. The testbed implements the required PCE Communication Protocol (PCEP) and Resource ReSerVation Protocol with Traffic Engineering (RSVP-TE) extensions, together with service request filtering operations performed with a policy based architecture. A dynamic routing architecture suitable for inter-carrier, connection-oriented, service provisioning has not been implemented yet, mainly because of privacy, billing and monitoring issues.
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