What is a Subnet?
A logical subdivision of an IP network, created by dividing a larger network.
Detailed Explanation
Subnetting divides a network into smaller, more manageable pieces. This improves network performance by reducing broadcast domains, enhances security by isolating network segments, and allows for more efficient use of IP address space. Each subnet has its own network address, broadcast address, and range of usable host addresses.
Examples
- •192.168.1.0/24 divided into 192.168.1.0/25 and 192.168.1.128/25
- •Company network divided into departments: Sales, Engineering, HR
- •Data center with separate subnets for web, app, and database servers