Network Design Volume 1

NETWORK DESIGN VOLUME 1 M O H A M E D A M I R W A K I D I B I N R O S L I N U R Z A I H A N B I N I S M A W I M U H A M A D F A I Z A L B I N M D Z U L K I F L I https://anyflip.com/ohunb/crhc/

NETWORK DESIGN 1ˢᵗ EDITION 2023 Written By MOHAMED AMIR WAKIDI BIN ROSLI NURZAIHAN BIN ISMAWI MUHAMAD FAIZAL BIN MD ZULKIFLI VOLUME 1 Network Design Concept

PUBLISHED BY: POLITEKNIK MUKAH KM 7.5 JALAN OYA, 96400 MUKAH, SARAWAK Mohamed Amir Wakidi bin Rosli Nurzaihan bin Ismawi Muhamad Faizal bin Md Zulkifli Tel: +6084-874001 Fax: +6084-874005 www.pmu.edu.my Network Design Volume 1 Network Design Concept Author: 1. 2. 3. COPYRIGHT @ 2023 EDITION All right reserved. No part of this publication may be reproduced, distributed or transmitted in any form or by any means, including photocopying, recording or other electronic or mechanic methods, without the prior written permission of the writer, expect in the case of brief quotation embodied review and certain other noncommercial and education use permitted by Politeknik Mukah. i

PREFACE This e-book was produced for the Network Design course for Polytechnic. This e-book introduce students the surface of network design especially regarding concept of network, network architecture and methodology used in network design. Students will be explained about the needed of build good network, what the requirement of the network, the difference between flat and hierarchical design model, framework of the CISCO enterprise architecture and PPDIOO methodology. ii

MOHAMED AMIR WAKIDI BIN ROSLI NURZAIHAN BIN ISMAWI MUHAMAD FAIZAL BIN MD ZULKIFLI The author of the books are lecturers in Politeknik Mukah 1. 2. 3. 1 2 3 ABOUT THE AUTHOR iii

TA B L E O F C O NTE NTS COPYRIGHT PREFACE ABOUT THE AUTHOR NETWORK DESIGN CONCEPT 1.0 Introduction i. Enterprise network ii. Enterprise network category 1.1 Build simple architecture of hierarchical i. Understand network requirements ii. Four fundamental network design goal iii. Network design model 1.2 Build the modular framework of enterprise architecture i. Enterprise architecture ii. The modular framework of the Cisco enterprise architecture 1.3 Follow methodology used in network design i. PPDIOO REFERENCES i ii iii 3 5 8 10 11 23 vi 18 21

NETWORK DESIGN CONCEPT CHAPTER 1 1

2 1.0 INTRODUCTION

3 Enterprise Network What is Enterprise company? Is a large companies or organization with complex network

4 Enterprise Network An enterprise network consists of a group of local area networks (LANs) interconnected using wide area networks (WANs). An enterprise network contains a number of internetworking devices (e.g., switches, routers, modem, server etc) and is under the control of one big organization.

5 Enterprise Network Category 1.Small network – Provides services for 1 to 200 devices. 2.Medium-sized network – Provides services for 200 to 1,000 devices. 3.Large network – Provides services for 1,000+ devices.

1.1 BUILD SIMPLE ARCHITECTURE OF HIERARCHICAL NETWORK DESIGN 6

Leaning Outcome Understand network requirements Learn four fundamentals network design goal Learn architecture of flat network design Understand the advantages of hierarchical network VS flat network Understand three layer hierarchical network design 7

Good networks do not happen by accident. They are the result of hard work by network designer and technicians, who identify network requirements and select the best solutions to meet the needs of a business. Understand network requirements The step required to design a good network are as follows: Step 1: Verify the business goals and technical requirements. Step 2: Determine the features and functions required to meet the needs identified in Step 1. Step 3: Perform a network-readiness assessment. Step 4: Create a solution and site acceptance test plan. Step 5: Create a project plan 8

Ease of management Fast recovery Application response time Fast troubleshooting In reality, most companies have just a few network requirements: 1. 2. 3. 4. Understand network requirements 9

Scalability Manageability Availability Security 1. 2. 3. 4. Four fundamental network design goal Scalability: Scalable network design can grow to include new user groups and remote sites and can support new applications without impacting the level of service delivered to existing users. Manageability: No matter how good the initial network design is, the available network staff must be able to manage and support the network. A network that is too complex or difficult to maintain cannot function effectively and efficiently. Availability: A network design for availability is one that delivers consistent, reliable performance, 24 hours a day, 7 days a week. In addition, the failure of a single link or piece of equipment should not significantly impact network performance. Security: Security is a features that must be designed into the network, not added on after the network is complete. Planning the location of security devices, filters, and firewall features is critical to safeguarding network resources. 1. 2. 3. 4. 10

Flat network Hierarchical network 1. 2. Network design model 11

What is Flat network? A flat network is a computer network design approach that aims to reduce cost, maintenance and administration. Hubs and switches were added as more devices needed to be connected. A flat network design provided little opportunity to control broadcasts or to filter undesirable traffic. 12

What is Heirarchical network? The hierarchical network design model serves to helps you develop a network topology in separate layers. •Each layer focuses on specific functions, enabling you to choose the right equipment and features for the layer. For example, high-speed WAN routers carry traffic across the enterprise backbone, medium-speed routers connect buildings at each campus, and switches and hubs connect user devices and servers within buildings. 13

What is Heirarchical network? Access layer – Provides workgroup or user access to the network. Distribution layer – Define network boundaries and is the point in the network at which packet manipulation can take place. Provides policy-based connectivity. Core layer – A high-speed switching and routing backbone and designed to pass network traffic as fast as possible. 14

Benefits of Hierarchical network design Provides redundancy and fast convergence between other network layers or modules Aggregates access devices and support routing, access control and QoS Provides network connectivity for hosts and end devices Provides network support for all enterprise services within a campus Protect server resources with reliable, high-speed connectivity Extends enterprise services to remote sites and provides connectivity to external sites using QoS, policy 15 enforcement, service levels, and security

Difference between Flat & Hierarchical network 16

1.2 BUILD THE MODULAR FRAMEWORK OF ENTERPRISE ARCHITECTURE 17

For a network designer, enterprise architecture serves as a valuable framework and reference point to guide the design, implementation, and management of the network infrastructure within an organization. It helps network designers understand the overall context, business objectives, and technology requirements of the enterprise, enabling them to make informed decisions and create effective network solutions. Enterprise architecture 18

Enterprise architecture Enterprise Edge As traffic comes into the campus network, this area filters traffic from the external resources and routes it into the enterprise network. It contains all the elements required for efficient and secure communication between the enterprise campus and remote locations, remote users, and the Internet. 19

This area contains the network elements required for independent operation within a single campus or branch location. Enterprise architecture Enterprise Campus Server Farm A component of the enterprise campus, the data center server farm protects the server resources and provides redundant, reliable high-speed connectivity. 20

The modular framework of the Cisco Enterprise Architecture The modular framework of the Cisco Enterprise Architectures has the following design advantages: •It eases the design task by making each module independent. The designer can focus on the needs of each area separately. •It provides scalability by allowing enterprises to add modules easily. As network complexity grows, the designer can add new functional modules. •It enables the designer to add services and solutions without changing the underlying network design. 21

1.3 FOLLOW METHODOLOGY USED IN NETWORK DESIGN 22

PPDIOO is an acronym that stands for Prepare, Plan, Design, Implement, Operate, and Optimize. It is a methodology used in network design and implementation, primarily associated with Cisco Systems. PPDIOO provides a structured approach for the lifecycle of network infrastructure, from initial planning to ongoing optimization. PPDIOO 23

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vi REFERENCES Gerardus, B. (2020). Network Design A Complete Guide - 2021 Edition. 5STARCooks. (ASIN: B08QVF4549) Uday, A. B., &. Ajay, V. B. (2020). Network Synthesis and Filter Design: Network Functions, Synthesis of One and Two Port Networks, Filter Design. Technical Publications. (ASIN: B08PG6Y3WV) Helali, S. (2020). Systems and Network Infrastructure Integration: Design, Implementation, Safety and Supervision 1st Edition. Wiley-ISTE (ASIN: B08M4HX239) Oaz, I. (2020). Network Design Security, Specialist Juniper Jno - 1330 Exam Question And Answers. Oaz Institute. (ASIN: B08M694VWT) Blokdyk, G. (2019). Network Design A Complete Guide - 2019 Edition (Paperback) 5starcooks. (ASIN: B07WFRSFM9)

PUBLISHED BY: Tel: +6084-8740001 Fax: +6084-874005 POLITEKNIK MUKAH KM7.5 JALAN OYA, 96400 MUKAH SARAWAK. https://anyflip.com/ohunb/crhc/