To understand how subnetting works, you first must have a good basic understanding of IP addresses. An IP address is set of binary octets broken into quads. That definition may not have made any sense ...

George Ou explains IP subnetting using his own graphical approach. It's a great primer for students and a nice refresher for others. IP subnetting is a fundamental subject that’s critical for any IP ...

We found several utilities to help calculate IP subnets, subnet ranges, and CIDR addressing. IP Subnet Calculator (free) is a good, basic subnet calculator that shows available subnets based on IP ...

I have a networking situation where some tools can or can't communicate between two devices on the same LAN but differing subnet masks (it's an error, will be corrected). The question is why do some ...

In the last two articles, we talked about IPv4 basics (Part IV) (Part V). We introduced the concept of folding a sheet of paper to understand subnetting. Each fold of the paper is a bit borrowed from ...

It’s easy to start building a network — connect a few devices, plug in a router, and off you go. But without proper planning and documentation, that same network can quickly grow into a tangled mess ...