Many in the industry realize that as we migrate to IPv6 there will be a day when IPv4 is not needed anymore. However, that transition seems daunting and may take decades. In the meantime, ...

The last editionof this column discussed subnet masks and the nature of IP addressing. In this and the following column, we will begin discussing what subnetting means and how to do it. First, though, ...

We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...