Neeraj Kumar Goyal - Interconnection Network Reliability Evaluation

However, any industrial activity in creating a product, system, or service is always associated with certain environmental impacts that follow at each phase of development. These considerations have become all the more necessary in the 21st century as the world resources continue to become scarce and the cost of materials and energy keep rising. It is not difficult to visualize that by employing the strategy of dematerialization, minimum energy and minimum waste, while maximizing the yield and developing economically viable and safe processes (clean production and disposal at the end of the life. This is basically the goal of performability effect on the environment during production and disposal at the end of the life. This is basically the goal of performability engineering.

It may be observed that the above-mentioned performance attributes are interrelated and should not be considered in isolation for optimization of performance. Each book in the series should endeavor to include most, if not all, of the attributes of this web of interrelationship and have the objective to help create optimal and sustainable products, systems, and services.

Publishers at Scrivener Martin Scrivener ( martin@scrivenerpublishing.com) Phillip Carmical ( pcarmical@scrivenerpublishing.com)

Neeraj Kumar Goyal

Indian Institute of Technology Kharagpur, India

and

S. Rajkumar

Adama Science and Technology University, Ethiopia

This edition first published 2020 by John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA and Scrivener Publishing LLC, 100 Cummings Center, Suite 541J, Beverly, MA 01915, USA

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Library of Congress Cataloging-in-Publication Data

ISBN 978-1-119-62058-7

Cover image: Pixabay.Com

Cover design by Russell Richardson

The Figure given below represents the concept of performability as introduced by the editor in 2005 and reflects a holistic view of designing, producing, using, and disposing products, systems or services, which will satisfy not only the basic operational requirements to the best possible extent with minimum cost, but are also sustainable. Sustainability aspect of products, systems and services includes that they consume minimum material and energy in their production, use and disposal and produce minimum waste in order to create minimum environmental impact which is of prime importance and requirement in the 21st Century. In other words, it should represent the holistic performance.

In fact, the concept of performability and sustainable development are closely interlinked. To promote the concept to wider section of engineering community, consisting of planners, designers, manufacturers, researchers, technologists and users, the Editor published the first book on performability engineering in 2008 [1]. The book consisted of 76 chapters with 100 contributors and touching on all aspects of performability with the Editor himself contributing 15 chapters. The response to this book has been overwhelming with more than 495,445 chapter downloads to the end of 2019. A German company, ResearchGate, which keeps track of chapters, books etc., read by people the world over, reports that the main chapters authored by the Editor himself had the following statistics as of June 04, 2020:

This indicates the interest evinced by readers the world over in the subject of performability engineering. Encouraged by this interest, Scrivener Publishing LLC undertook the publication of a series of books in the area of performability engineering with Prof. Krishna B. Misra and Prof. John Andrews of Nottingham University, UK as Series Editors in 2014, and it is matter of satisfaction that as many as 10 books have been published under this series so far. The books published under this series have solicited good number of citations in spite of the fact that much time has not elapsed after their publication.

As an Editor of this series, I solicit manuscript of books from academicians, engineers and researchers in any area of Performability Engineering. For details, please contact the Series Editor.

Krishna B. Misra, Series Editor

kbmisra@ramsconsultants.org

Web: www.ramsconsutants.org

June 2020

1 [1] Misra, Krishna B. (Editor), Handbook of Performability Engineering, Springer, London, 2008.

Network reliability evaluation for complex communication networks is a time-consuming task. Complex networks such as computer communication networks, telecommunication networks, transport networks, etc. are an integral part of our daily life. Complex networks interconnect multiple processing units in distributed systems. Performance of such networks can be measured by evaluating the reliability index, which represents the probability that the network operates satisfactorily for a given period of time when used under stated operating conditions. A network designer has to choose suitable fault-tolerant and highly reliable network architecture to avoid performance degradation and carry out multiple communication tasks concurrently.