TCP Boston: A Fragmentation-tolerant TCP Protocol for ATM Networks


Show simple item record Bestavros, Azer en_US Kim, Gitae en_US 2011-10-20T04:32:23Z 2011-10-20T04:32:23Z 1996-07-15 en_US
dc.identifier.citation Bestavros, Azer; Kim, Gitae. "TCP Boston: A Fragmentation-tolerant TCP Protocol for ATM Networks", Technical Report BUCS-1996-014, Computer Science Department, Boston University, July 15, 1996. [Available from:] en_US
dc.description.abstract The popularity of TCP/IP coupled with the premise of high speed communication using Asynchronous Transfer Mode (ATM) technology have prompted the network research community to propose a number of techniques to adapt TCP/IP to ATM network environments. ATM offers Available Bit Rate (ABR) and Unspecified Bit Rate (UBR) services for best-effort traffic, such as conventional file transfer. However, recent studies have shown that TCP/IP, when implemented using ABR or UBR, leads to serious performance degradations, especially when the utilization of network resources (such as switch buffers) is high. Proposed techniques-switch-level enhancements, for example-that attempt to patch up TCP/IP over ATMs have had limited success in alleviating this problem. The major reason for TCP/IP's poor performance over ATMs has been consistently attributed to packet fragmentation, which is the result of ATM's 53-byte cell-oriented switching architecture. In this paper, we present a new transport protocol, TCP Boston, that turns ATM's 53-byte cell-oriented switching architecture into an advantage for TCP/IP. At the core of TCP Boston is the Adaptive Information Dispersal Algorithm (AIDA), an efficient encoding technique that allows for dynamic redundancy control. AIDA makes TCP/IP's performance less sensitive to cell losses, thus ensuring a graceful degradation of TCP/IP's performance when faced with congested resources. In this paper, we introduce AIDA and overview the main features of TCP Boston. We present detailed simulation results that show the superiority of our protocol when compared to other adaptations of TCP/IP over ATMs. In particular, we show that TCP Boston improves TCP/IP's performance over ATMs for both network-centric metrics (e.g., effective throughput) and application-centric metrics (e.g., response time). en_US
dc.description.sponsorship National Science Foundation (CCR-9308344) en_US
dc.language.iso en_US en_US
dc.publisher Boston University Computer Science Department en_US
dc.relation.ispartofseries BUCS Technical Reports;BUCS-TR-1996-014 en_US
dc.subject ATM networks en_US
dc.subject Adaptive Information Dispersal Algorithm en_US
dc.subject Congestion control en_US
dc.subject Performance evaluation en_US
dc.title TCP Boston: A Fragmentation-tolerant TCP Protocol for ATM Networks en_US
dc.type Technical Report en_US

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