Accession Number : ADA330111

Title :   Transport Flow Control and Connection Admission Policies for Reliable Applications

Corporate Author : COMMUNICATIONS RESEARCH CENTRE OTTAWA (ONTARIO)

Personal Author(s) : Lamont, Louise ; Miloucheva, Ilka ; Sterling, Wolfram

PDF Url : ADA330111

Report Date : APR 1996

Pagination or Media Count : 77

Abstract : The purpose of this report was to determine transport protocol performance characteristics over high speed trans-Atlantic ATM connections, using national High Speed Test Networks and Teleglobe's trans-Atlantic submarine fibre CANTAT-3. The measurements focus on TCP/IP's flow control parameters and mechanisms for Quality of Service (QOS) provision (throughput, response time) to bulk data and transaction applications. Practical issues of TCP/IP over Long Fat Networks (LFN) (trans-Atlantic ATM) are investigated and compared with TCP/IP performance on ATM Local Area Networks (LANs). In order to study the QOS management of TCP/IP connections over ATM, we investigated the specific effects of performance factors such as: TCP flow control and send window size, network delay, system scheduling and application traffic. In this document we discuss the mapping of applications' QOS parameters to the ATM service classes and policies for connection admission control. We also present the performance effects of bundling or grouping transport connections over the same ATM resources. Practical considerations for mapping the traffic and QOS requirements of applications to ATM resources are discussed.

Descriptors :   *COMMUNICATIONS TRAFFIC, *LOCAL AREA NETWORKS, *WIDE AREA NETWORKS, *ASYNCHRONOUS TRANSFER MODE, SIGNAL PROCESSING, FIBER OPTICS, DATA MANAGEMENT, COMPUTER COMMUNICATIONS, OPTICAL COMMUNICATIONS, CIRCUIT INTERCONNECTIONS, OPTICAL CIRCUITS, MULTIPLEXING, DIGITAL COMMUNICATIONS, DELAY CIRCUITS.

Subject Categories : Computer Systems
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE