What is subnetting about?how to calculate subnetting?
Get yourself a book on computer networking or try googling for “wikipedia subnetwork.” I’m not going to rewrite an answer that already exists. Subnetting is used to break the network into smaller more efficient subnets to prevent excessive rates of Ethernet packet collision in a large network. Such subnets can be arranged hierarchically, with the organization’s network address space (see also Autonomous System) partitioned into a tree-like structure. Routers are used to manage traffic and constitute borders between subnets.
