idstarfleet asked for this one, I hope its useful. This video (quickly) covers VLSM (variable length subnet masking) which for all intents and purposes is simply subnetting a subnet. I created this with the idea that anyone watching is already familiar with subnetting and CIDR (if not, please watch some of my other videos on the subject) I also apologize for the audio quality. A new mic is in the works. Less