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Performance and buffering requirements of Internet protocols over ATM ABR and UBR services

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3 Author(s)
Kalyanaraman, S. ; Rensselaer Polytech. Inst., Troy, NY ; Jain, R. ; Fahmy, S.

ATM networks are quickly being adopted as backbones over various parts of the Internet. This article studies the dynamics and performance of the TCP/IP protocol over the ABR and UBR services of ATM networks. Specifically the buffering requirements in the ATM switches as well as the ATM edge devices. It is shown that with a good switch algorithm, ABR pushes congestion to the edges of the ATM network while UBR leaves it inside the ATM portion. As a result, the switch ABR buffer requirement for zero-packet-loss high-throughput TCP transmission is a sublinear function of the number of TCP connections

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Communications Magazine, IEEE  (Volume:36 ,  Issue: 6 )