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Subnetting is the process of dividing a network into two or more logically addressable smaller networks. Given below are some of the advantages of subnetting a network:
The IP address space is in ever growing demand. It is important that assigned IP addresses are well utilized. Subnetting enables one to utilize assigned IP addresses optimally.
Subnetting minimizes unnecessary traffic. A router is used to route traffic between different subnets. This eliminates unnecessary flooding of network segments with packets destined for some other subnets.
Makes the network more manageable. For example, a Company, by allocating separate subnets to each department, can manage the whole network easily.
Improve security: When you subnet a larger network, each subnet is a mini network. Typical routing rules apply. This enhances the security of the overall network.
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