The complete Subnetting Mastery Video series has released! This series is intended to be the last Subnetting videos you will ever need to watch (and the feedback seems to confirm the goal is achieved).

Watching this series will take you from knowing little or nothing about Subnetting, to being a Subnetting pro. The series also includes a practice problem generator to practice your new found skills (see the end of Video 4 for details).

Subnetting is something junior Network Engineers have struggled with for too long, and its time for us (as in industry) to move past it.

Subnetting Mastery

Part 1: What is Subnetting?

Part 2: Drawing the Subnetting Cheat Sheet

Part 3: Using the Cheat Sheet

Part 4: Practice Examples

Part 5: Time-Saving Tricks

Part 6: Subnetting in the /17-/24 range

Part 7: Subnetting in the /1-/16 range

If you're already comfortable with Subnetting and just want a sample of what the videos are like, I would recommend Video 5, 6, or 7 to see the quality of the series and the subnetting process in action.

If you know of someone that could benefit from learning to Subnet, please share with them this short link: pracnet.net/sm -- it will automatically redirect them to the full series on YouTube.

I've worked really hard on this series, put a lot of hours into them, and am very proud of the results ^{of course, I am still open to feedback}. I truly hope you enjoy the videos and learn once and for all how to subnet.

Edit: The full series, including three additional videos not listed above are available here: https://subnetipv4.com/