Benebenefits of subnetting

1. We conserved IP addresses by assigning less hosts per sub net.
2. We get smaller collision domains — the collisions happened in one sub net won’t effect other sub nets.
3. We get smaller broadcast domains — the broadcast from one subnet won’t propagate to other sub nets.
4. We can more easily apply network security measures at the interconnections between subnets than throughout the entire network.
5. We can easily map sub nets to geographical or functional requirements to a cooperation. For example, we give a sub net to market department, another to engineer department, so that each department is responsible for their own network.
6. It reduces the routing table .
7. It control ip traffic and performance increased.