Saida Helali - Systems and Network Infrastructure Integration

9 Chapter 9Figure 9.1. Functionalities of a monitoring systemFigure 9.2. Active monitoringFigure 9.3. Passive monitoringFigure 9.4. SNMP requests, responses and alertsFigure 9.5. MIB structure

1 Cover

2 Table of Contents

3 Begin Reading

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Series Editor Jean-Charles Pomerol

Saida Helali

First published 2020 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc.

Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA. Enquiries concerning reproduction outside these terms should be sent to the publishers at the undermentioned address:

ISTE Ltd

27-37 St George's Road

London SW19 4EU

UK

www.iste.co.uk

John Wiley & Sons, Inc

111 River Street

Hoboken, NJ 07030

USA

www.wiley.com

© ISTE Ltd 2020

The rights of Saida Helali to be identified as the author of this work have been asserted by him in accordance with the Copyright, Designs and Patents Act 1988.

Library of Congress Control Number: 2020938682

British Library Cataloguing-in-Publication Data

A CIP record for this book is available from the British Library

ISBN 978-1-78630-526-8

This book, a true independent learning tool intended principally for students of network and systems sectors, is a guide to understanding the various facets of a network and systems integration project by learning the underlying concepts and acquiring the skills necessary to implement such projects. It is aimed at helping students acquire technical skills stemming from the analysis of needs, the specification of infrastructure characteristics, the definition of the equipment and components of the resulting networks, and their incorporation into the construction of a complete high-performance infrastructure that will satisfy the needs of a client company. Moreover, the methodological and organizational skills needed to oversee this type of project in terms of various considerations such as cost and deadline are also necessary and will be furnished by this book. This book also addresses the concept of Green IT, in order to raise students' awareness of environmental issues before they begin their professional lives, so that they will take these issues into account during the deployment of IT infrastructures.

The ultimate objective of this book is to enable students to learn how to design and develop network infrastructures for medium-sized and large businesses, and, more specifically, how to analyze needs and subsequently translate them into the design of the topology of a network that is fit for purpose. How do we define need in terms of interconnection equipment? How do we put an optimized addressing scheme in place? How do we determine the technologies, tools and manufacturers best suited to create a high-quality, high-performance network that is highly secure and accessible while being eco-friendly and state-of-the-art at the same time?

This book is made up of nine chapters, set out in two complementary sections adapted for IT network technicians; specifically:

– A methodological and organizational section that will enable students to understand, from the first chapter, the concept of specifications, and how to decipher them and to acquire the knowledge needed to manage an IT project, that is, the corresponding approaches, methods and tools. Indeed, it is vital to plan every stage of the implementation of an IT solution, to be familiar with its principal actors, and to know how to develop an efficient communication plan with regard to deliverables requested, milestone dates, etc.

This section will also provide an overview of the basic concepts of simulation in Chapter 2, and will more specifically introduce the GNS3 tool for the prototyping and testing of IT infrastructures before their on-site deployment. The use of this type of software protects an IT infrastructure integration project team for disrupting the operation of the production network. In addition, GNS3 is highly prized for teaching purposes, particularly in the absence of network hardware.

This section will also present the aspects of the environmental impact of IT infrastructures, or Green IT, with the aim of introducing students to and increasing their awareness of this reduced energy consumption approach in all network infrastructure implementation projects.

– A technological section that will address the purely technical aspects of network infrastructures in an organically laid-out sequence based on the actual process of setup and implementation.

Chapter 4which begins this section, gives a concise introduction to the main network services generally provided by IT infrastructures.