In computer networking, a broadcast domain is essential for devices to locate each other. However, larger domains mean more hosts — and more broadcast traffic. This can degrade performance.
🧠 What is Subnetting?
Subnetting is the process of dividing a large broadcast domain into smaller ones, known as subnets. This reduces traffic and enhances network efficiency by borrowing host bits to create subnet bits.
⚙️ Advantages of Subnetting
- 📉 Reduces network traffic
- 🚀 Improves performance and speed
- 🔐 Enhances security through segmentation
🏢 Subnetting by Location
Networks can be subnetted based on locations such as different floors in a building. For instance:
Floor 1: 10.0.1.0/24 → Users start from 10.0.1.1, 10.0.1.2, ...
🏛️ Subnetting by Org Units or Device Type
Subnets can also align with organizational units (e.g., HR, Students, Admin) or device types (e.g., printers, servers).
🔢 Prefix Changes and Network Classes
- /8 → Class A
- /16 → Class B
- /24 → Class C
💡 Tip: Efficient subnetting reduces wasted IPs and supports better device management.
