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Conference Paper


Comparing ATM Credit-Based and Rate-Based Controls for TCP Sources


TCP/IP traffic is likely to be one of the most heavily carried over ATM networks. However this kind of traffic is of connectionless nature and for this reason will be carried on an Available Bit Rate (ABR) basis. In order to prevent the ABR traffic from congesting the network, special congestion control techniques have been devised. These schemes can be categorized in two major groups: rate-based and creditbased schemes. The most important representatives of these categories are respectively the PRCA and the FCVC. Since TCP/IP traffic is also controlled by the TCP window flow control, in this paper we present a comparison between PRCA and FCVC under TCP traffic. In this sense the performance measure we are mostly concerned with is the goodput. We investigate the impact of the burstiness of the guaranteed sources used as background traffic and the maximum size of TCP segments, which seems to be critical for the PRCA approach. I. Introduction It is likely that the next generation of LAN...

Paper: PDF file of paper

Information & Date

MILCOM, , November. 1995


Mario Gerla
Carlos M. D. Pazos