Some people may grasp the concept of subnetting at the first time they are introduced to it, but there are others that don’t.
some friends request me to posted this videos that clearly explains subnetting, making it easir to understand.
hope this helps you all.
A subnetwork, or subnet, is a logically visible subdivision of an IP network. The practice of creating subnetworks is called subnetting.
All computers that belong to a subnet are addressed with a common, identical, most-significant bit-group in their IP address. This part of the address is known as the routing prefix or network number. The size of the routing prefix may be indicated using CIDR notation or through specification of a subnet mask
The benefits of subnetting vary with each deployment scenario. It may use address space more efficiently, may enhance routing efficiency, or have advantages in network management when subnetworks are administratively controlled by different entities in a larger organization. Subnet may be arranged logically in a hierarchical architecture, partitioning the organization’s network address space into a tree-like routing structure.