Subnetting Mastery
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Master IP subnetting from basic CIDR notation to complex VLSM designs. Practice problems and real-world network design scenarios.
CIDR Notation Guide
Understand CIDR notation, how to read it, and how it replaced classful addressing.
5 dk okumaSubnet Masks Explained
How subnet masks work at the binary level to separate network and host portions of an IP address.
6 dk okumaVLSM Network Design
Design efficient networks using Variable-Length Subnet Masking to minimize address waste.
6 dk okumaSupernetting & Route Aggregation
Learn how supernetting combines multiple smaller networks into a single route to reduce routing table size and improve network efficiency.
9 dk okumaIPv4 Subnetting Practice Problems
Work through 10 real-world subnetting problems with step-by-step solutions covering address calculations, subnet sizing, and host ranges.
14 dk okumaPrivate IP Ranges & RFC 1918
A complete reference to private IP address ranges, their intended uses, and how they interact with NAT, routing, and network design.
8 dk okumaClassful vs Classless Addressing
Understand the evolution from classful IP addressing (Class A/B/C) to classless CIDR, and why the transition was critical for the internet's survival.
8 dk okumaVLSM Design Examples for Enterprise Networks
Learn Variable Length Subnet Masking (VLSM) through practical enterprise design scenarios with step-by-step allocation examples.
10 dk okumaSubnetting for IPv6: /48 to /64 and Beyond
Learn how IPv6 subnetting differs from IPv4. Understand the /48 to /64 hierarchy, site prefixes, and why a /64 is the standard subnet size.
9 dk okumaNetwork Design for Small Business
A practical guide to designing IP networks for small businesses, covering subnet sizing, VLAN segmentation, DHCP scoping, and growth planning.
10 dk okumaIP Addressing Plan Template
A complete IP addressing plan template for enterprise networks, covering documentation standards, allocation strategies, and IPAM best practices.
9 dk okumaSubnetting Cheat Sheet and Quick Reference
A comprehensive subnetting cheat sheet covering CIDR notation, subnet masks, host counts, and quick-reference tables for IPv4 and IPv6.
6 dk okumaIPv6 Subnetting: /48, /64, and Beyond
Master IPv6 subnetting — from prefix delegation and nibble boundaries to /48 site assignments, /64 subnet standards, and /128 host routes.
12 dk okumaCloud VPC Subnet Design Patterns
Plan AWS, GCP, and Azure VPC CIDRs with public/private subnet tiers, availability zone distribution, and non-overlapping ranges for VPC peering.
13 dk okumaAdvanced VLSM Design Scenarios
Apply VLSM to real-world enterprise network design: multi-site allocations, efficient point-to-point links, and route summarisation across variable-length prefixes.
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