IMPROVING THE PERFORMANCE OF TCP OVER THE ATM-UBR SERVICE

Citation
R. Goyal et al., IMPROVING THE PERFORMANCE OF TCP OVER THE ATM-UBR SERVICE, Computer communications, 21(10), 1998, pp. 898-911
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Computer Science Software Graphycs Programming","Computer Science Hardware & Architecture","Computer Science Information Systems","Computer Science Information Systems","Computer Science Hardware & Architecture","Computer Science Software Graphycs Programming
Journal title
ISSN journal
0140-3664
Volume
21
Issue
10
Year of publication
1998
Pages
898 - 911
Database
ISI
SICI code
0140-3664(1998)21:10<898:ITPOTO>2.0.ZU;2-J
Abstract
In this paper we study the design issues for improving TCP performance over the ATM UBR service. ATM-UBR switches respond to congestion by d ropping cells when their buffers become full. TCP connections running over UBR can experience low throughput and high unfairness. Intelligen t switch drop policies and end-system policies can improve the perform ance of TCP over UBR with limited buffers. We describe the various des ign options available to the network as well as to the end systems to improve TCP performance over UBR. We study the effects of early packet discard, and present a per-VC accounting-based buffer management poli cy. We analyze the performance of the buffer management policies with various TCP end system congestion control policies, including slow sta rt and congestion avoidance, fast retransmit and recovery and selectiv e acknowledgments. We present simulation results for various small and large latency configurations with varying buffer sizes and number of sources. (C) 1998 Published by Elsevier Science B.V.