Incollection,

Engineering and routing of connection-oriented multirate reference networks

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Teletraffic Engineering in the Internet EraProceedings of the International Teletraffic Congress - ITC-I7, volume 4 of Teletraffic Science and Engineering, Elsevier, (2001)
DOI: http://dx.doi.org/10.1016/S1388-3437(01)80138-4

Abstract

This contribution proceeds to connection-oriented networks by combining full fairness multi-services bufferless switching and nonhierarchical routing (NHR). The near explicit solution of the recently elaborated first order recurrence equation for multirate loss systems is justified to provide a decomposition of the huge state space into two near independent areas which are subject to full fairness bandwidth reservation and aggregated state reservation in the access and subnetwork areas, respectively. Thus, the former supports connection admission control and the latter admits a near independent engineering and routing. In view of many particular solutions the focus remains devoted to reference networks (RN) which are symmetric but admit asymmetric demand pairs. Nevertheless a link by link capacity and flow assignment reduces to an evolutionary networking supported by approximate rules and accurate performing operators. For example the admissable \STM\ 1 load in Erl bitrate units subject to a unique backbone network call level \GOS\ of 0.1% typically saves 5% of capacity subject to \NHR\ with one alternative route only. In contrast to this, the completely uncontrolled \RN\ yields service class blocking until 5% subject to the same capacity at the engineered load and a \CBR\ range until 30 bitrate units.

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