Variable Length Subnetwork Mask. Optimization of IP attribution by using different subnetwork mask for a same network.
a way to configure an IP subnet for maximum flexibility
variable length subnet masks. Subnet masks used to produce subnets of an IP network ID of different sizes.
variable-length subnet mask. Ability to specify a different subnet mask for the same network number on different subnets. VLSM can help optimize available address space.
(n.) Variable-Length Subnet Mask.