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VLSM Made Easy

Chika Nwokeoma

Variable Length Subnet Masks
(VLSM)

Made Easy

1

http://www.orbit-computer-solutions.com

VLSM Made Easy

Chika Nwokeoma

This eBook is intellectual property of orbit-computer-solutions.com. It must only be published in its original form. Using parts or republishing altered parts of this guide is prohibited without permission from orbit-computer-solutions.com. An authorize sharing or distribution of this eBook without the knowledge of the copyright owner with result to legal action.

2

http://www.orbit-computer-solutions.com

VLSM Made Easy

Chika Nwokeoma

Contents
………………………………………………………………………………………..
IP Addressing Overview.....4
. What an IP Address?.......4
. IP Address Format..........5
. IP Address Class and Range......6
Planning to Address the Network....8
. Why Plan, design and document....8
The Use of a hierarchal or structural IP Addressing
Scheme...9
. Benefits of a hierarchical network design...9
The use of Subnet in Structuring the Network....12
. Let’s talk Subnet Mask.....12
Humans see Decimals; Computer sees Binary.....13
. IP Address Classes, decimals and binary
Summarized....14
Basic Subnetting Process....21
Variable Length Subnet Masks (VLSM)....24
Benefits of VLSM:....24
Implementing VLSM....25
VLSM Practice....33

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VLSM Made Easy

Chika Nwokeoma

IP Addressing Overview
My aim of writing this eBook is to teach you how to subnet using VLSM the easy way. I will not go into those technical jargons; I will try as much as possible to use a layman’s language to pass my message through. For those of us who expect CCNA technical jargons; forgive me, I

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