Connection-oriented protocols over ATM: a case study
Spiridon Damaskos, Anastassios Gavras · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1994
Efficient mapping of connection oriented protocols on ATM needs the identification of the protocol elements and their association to the corresponding ATM elements. In this context the functions provided by connection oriented protocols are structured like the B-ISDN reference model. The control of higher power (transport- or network-) layer protocol connections is done using procedures and parameters that are currently defined in the ATM control plane. With regard to that a simultaneous establishment of an ATM connection and the corresponding higher layer protocol connection is presented. The Quality of Service (QoS) parameters of the connection oriented protocol are identified and associated to the corresponding QoS parameters of the ATM layer. The possibilities of dealing with not matching parameters are examined and evaluated. Some observations from a real system (BERKOM Transport System) concerning the simultaneous connection establishment and the efficient mapping of the QoS parameters onto the ATM performance parameters are given. Finally, additional requirements for the connection oriented protocols and the ATM signalling protocol, to fully support the simultaneous connection establishment and the QoS mapping, are discussed.