Protocol engineering A rule based approach
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Informatics
J. M. Schneider
Protocol Engineering
A Rule-based Approach
W. Bibel Automated Theorem Proving
E. Eder
Relative Complexities of First Order Calculi
F. KurfeB Parallelism in Logic
Vieweg - - - - - - - - - - - - - -
JOrgen M. Schneider
Protocol Engineering A Rule-based Approach
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Die Deutsche Bibliothek - CIP-Einheitsaufualune Schneider, Jiireen M.: Protocol engineering: a rule based approach / Jiirgen M. Schneider. -Braunschweig ; Wiesbaden : Vieweg, 1992
Verlag Vieweg, P.O. Box 5829, 0-6200 Wiesbaden Vieweg is a subsidiary company of the Bertelsmann Publishing International. All rights reserved
o Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden, 1992
No part of the publication may be reproduced, stored in a retrieval system or transmitted, mechanical, photocopying or otherwise, without prior permission of the copyright holder.
ISBN-13: 978-3-528-05243-0 e-ISBN-13: 978-3-322-83979-4 DOl: 10.1007/ 978-3-322-83979-4
Foreword
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Foreword It is now over twenty years since the first efforts were made to interconnect computers for the exchange of data. In the 1970s proprietary networking architectures, such as IBM's SNA, were developed and installed at many customer sites worldwide. At the same time the ARPANET in the United States became a research vehicle providing many new insights, in particular into packet switching technology and routing algorithms. In the 1980s the Interconnection of heterogeneous eqUipment was a dominating issue: ISO published the Reference Model for Open Systems Interconnection (051) and many new standards for the protocols of layers 4 to 7. In parallel the INTERNET community developed a new generation of protocols, the TCPliP protocol stack, in order to enable worldwide data interchange for scientists. Powerful workstations and PCs are now installed on many desktops because decentralized computing is often much more user friendly and cost effective than traditional mainframe computing. Yet access to shared information and resources is still required, creating a strong demand for interconnecting heterogeneous computers. Applications such as electronic mail, file transfer, Client/server configurations and manufacturing automation are now in widespread use, with computer eqUipment from different vendors. The network has really become the computer. In recent years the incredible advances in optical fiber technology have created a new physical medium for data transmission, with very high bandwidth and a very low bit error rate. The physical medium has increased in speed much faster than the computer. Originally most communication protocols were designed for relatively slow communication links and relatively fast CPUs. Thus the complete protocol stacks will now have to be revised for the new generation of high-speed networks. Due to the high data rates, these new networks will be able to support innovative applications. An example are interconnected multimedia workstations, integrating audio and video data streams with
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