IP Subnetting made easy – A subnetting tutorial

I’ve been asked to help people understand subetting and CIDR a few times.  In this post I give a short tutorial. Subnetting is explained in many places, with a large variety of methods. The key to working out valid subnets however is simply a matter of understanding the binary maths behind it.

This guide teaches you a simple method, suitable for the Cisco CCNA or ICND1 exam.

Continue reading “IP Subnetting made easy – A subnetting tutorial”