VLSM
acronymnetworking
Stands for: Variable-Length Subnet Masking
Using different subnet sizes within the same network, sized to each segment's need.
Variable-Length Subnet Masking abandons one-size-fits-all masks: a point-to-point link gets a tiny /30 while a user LAN gets a roomy /24, so addresses are not wasted. It depends on classless routing to carry the varied prefixes.
Also known as: vlsm