John Oden. It is 2013 and the Internet Assigned Numbers Authority has given out the last unallocated IPv4 space. This was several years ago. Since the early 2000s, the IT industry has been pondering the imminent depletion in IPv4 address space. In 2003, one would have believed that we would be well on the way to IPv6 deployment by 2013. This would eliminate the shortage of global IP addresses. But we are not. We are not on the right track with global IPv6 deployment.
We have made IPv4 last much longer than we thought possible ten years ago, thanks to technologies like Network Address Translation and Port Address Translation (NAT) combined with the Request for Comments 1918 private IP address space (RFC 1918).
All of this is to say that IPv4 is still alive and well. We will need to continue to be proficient in manipulating the IPv4 address spaces for many years to come. Understanding how to manipulate IPv4 addresses is crucial to understanding IPv6. This, along with the fact that most IT certification exams depend on your ability solve IPv4 addressing or subnetting problems, makes subnetting essential for IT success today.
We have created a series of videos called Subnetting Demystified to help you understand this concept. This series is designed to help you master the techniques required to be efficient with IP Subnetting.
When it is finished, this series will have eight videos. Here’s a list of topics that will be covered.
Introduction
IP Addressing
Binary Math
Address Classes
CIDR Notation
Why Subnet?
How to Subnetting
Fast Subnetting
Supernetting
After viewing these presentations and practicing the exercises, you will have all the tools you need to solve any subnetting problem using only a pencil. There are no subnetting tables nor calculators! Please leave a comment if you have any questions about subnetting or any other topics covered in these presentations.
Are you interested in CCNA or CCENT certification? We can help! Check out our CCNA Courseware.
