Buffer analysis of the explicit rate congestion control mechanism for the ABR service category in ATM networks

In this paper we consider an ABR traffic stream which shares an output port of a switch with delay sensitive CBR/VBR traffic. Congestion control of the ABR traffic is achieved by means of an Explicit Rate congestion control scheme. The occupancy of the ABR-buffer in the switch is analytically evaluated. Application of the analysis on numerical examples illustrates the influence of the following system characteristics on the buffer occupation. From this study some guidelines and engineering rules are derived for the ABR service category in ATM networks.

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