Subnetting Made Super Simple

Subnetting does not have to be as hard as most make it out to be. Start from the beginning and take it step by step.
  • Lectures 16
  • Video 2 Hours
  • Skill level beginner level
  • Languages English
  • Includes Lifetime access
    30 day money back guarantee!
    Available on iOS and Android
    Certificate of Completion

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Course Description

Whether you're just starting to learn subnetting or have been struggling with it for awhile, this guide will show you the easy way to learn to it and have you subnetting like a pro in no time. Starting with how to read binary numbers and IP addresses, you will then be walked through the process of breaking them down and creating any kind of network.

What are the requirements?

  • Basic knowledge of computer networking.
  • Basic math skills

What am I going to get from this course?

  • Over 16 lectures and 1.5 hours of content!
  • Learn to read and create binary numbers from 0 thru 255
  • Learn to read and create hexadecimal numbers from 0 through 9 and A through F
  • Discover the difference between Classful and Classless networking
  • How to subnet using A, B, and C networks
  • Find out how to subnet with both IPv4 and IPv6
  • Save IPv4 addresses using VLSM

What is the target audience?

  • People studying for CCNA or CCENT / 100-101 ICND1 Exams
  • Networking professional who wants to learn to create subnets
  • Anyone else who wants to learn to subnet

What you get with this course?

Not for you? No problem.
30 day money back guarantee

Forever yours.
Lifetime access

Learn on the go.
Desktop, iOS and Android

Get rewarded.
Certificate of completion


Section 1: Just the Basics

Introduction to the course.


Learn to use the binary numbers that you will need when subnetting. Convert binary numbers to decimal numbers and back again. Step by step format to make it easy to follow along.


IP addresses used to be broken down into classes. Learn about IP address classification and how it's used.


There is a second part to an IP address known as a subnet mask. Find out how the subnet masks that go with your classful IP addresses.

Section 2: IPv4 Subnetting

Moving onto more modern IPv4 subnetting. You'll be learning about VLSM and CIDR which are the backbone of subnetting. Once you understand this, you'll be able to conquor subnetting.


Understanding the math behind the subnetting is important if you want to make sure you always get your subnetting right. This will walk you through how the math works with three very different examples.


Now that you understand the way subnetting works, I'm going to show you something that will make your life a little easier.

Section 3: IPv4 Quizzes - Test Your Knowledge
Practicing Binary Numbers
20 questions
Classes and Reserved IP Addresses
20 questions
Powers of 2
16 questions
CIDR and Route Summarization
10 questions
Subnetting using VLSM
7 questions
Taking bits, Counting spaces
6 questions
Section 4: Subnetting IPv6

Learn to read and write hexadecimal numbers so you can subnet in IPv6.


IPv6 addresses are very long, but there are ways to shorten them.


A prefix length is similar to the IPv4 subnet mask, learn how to use it.


Learn how to do basic IPv6 subnetting. The different parts of the IPv6 address are discussed, and then you're shown how to break it down into subnets and host IDs.

Section 5: Conclusion and Extras
1 page

When you're finished learning subnetting and think you really have a thorough understanding, you're ready to move onto more advanced CCNA training. Here are my recommendations for CCNA training courses for you here on Udemy.

1 page

Charts for your use as you're going through the IPv4 section of this course.

2 pages

Charts to use while your working through the VLSM section of this course.

1 page

Charts to help as you work through the IPv6 section of this course.

Instructor Biography

Linda Roeder , IT Professional

Linda has a Bachelor degree in both IT and Accounting and currently works in the IT industry. Since 1998 she has also worked as an online writer for companies such as and By putting all her skills together from her accounting (math), IT (computers), and online writing (educating), she has designed a course for beginners on subnetting and hopes to create more courses in the future.

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Average Rating
  1. 5 Stars
  2. 4 Stars
  3. 3 Stars
  4. 2 Stars
  5. 1 Stars
    • Jim Holloway

    More showing how you figure out things

    Hi Linda, I got lost in two places. You keep talking about a # to the power of another number but do not explain how to figure that out either on paper or using a calculator and in the part where you are figuring out how many subnets there will be you just say 2 sq'd by the number of bits taken. I was lost from that point on. On your examples you verbally say what the starting IP address is that we are going to find out what subnet it is in but you only write down the subnet info, it would be good to have the original IP number so we can visually see it while you are going through the demo.

    • Brian Pelkie

    Charts are very helpful, tips are great

    Working with the charts using bits taken, bits left, increments needed, etc really clears a lot of this up. Using these tips/tricks is very helpful. Instuctor speaks clearly, good voice tone. (rated 4 as some charts could be better aligned for clarity [use mono font to align binary digits]).

    • Rich Miller

    Good for a quick review on subnetting

    There was a little too much time spent on basics (binary numbers, hex, etc.) -- anyone who is studying for a Network+ or Cisco cert should already have that stuff down pat. However, it was a decent refresher of the mechanics of calculating subnets.

    • Robert Volk

    Very good course

    Great course to gain the basics of subnetting. Easy to follow. There were a couple things I would have liked explained a little clearer such as the IPv6 subnets when the /xx bits are not divisible by 4. However, if you are understanding the material you will be able to figure it out. I would recommend this course to my peers.

    • Graham Howard

    Only a few lectures in and I already know way more than the almost nothing that I knew previous to me taking this class. I can only look forward to the rest of the lectures and the knowledge that I will gain!

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