Subnetting, FLSM & VLSM in networking — An Analysis
Subnetting, FLSM & VLSM in networking — An Analysis Subnetting is the process of dividing a larger network (IP address range) into smaller, more manageable sub-networks (subnets). This is often used in IP networking to improve security, efficiency, and performance by isolating network traffic and reducing broadcast domains. IP addresses can be considered the grammar of networking as it plays a role in almost every protocol of networking. Both FLSM (Fixed Length Subnet Masking) and VLSM (Variable Length Subnet Masking) are methods used to divide IP address space into subnets, but they differ significantly in their approach. First, let us look at an example of Subnetting for Class C IP addresses. Suppose you have an IP address 192.168.1.0/24. (Each octet in 8 bits.) 11111111.11111111.11111111.00000000 This means out of 32 bits, 24 bits for the network and 8 bits for the hosts, allowing for 256 IP addresses (including network and broadcast addresses). If you want to ...