VLSM Explained — Variable Length Subnet Masking | CCNA 200-301 | Packet Tracer Lab

VLSM — Variable Length Subnet Masking — explained and applied in Cisco Packet Tracer. CCNA 200-301. Learn how to allocate different-sized subnets to different network segments to avoid wasting IP addresses. The efficient subnetting method used in real networks and tested directly on the CCNA exam. ⏱️ Timestamps: 00:00 What is VLSM and why it matters 00:20 Topology overview — New York and Toronto sites 01:30 Assigning the largest subnet first (VLSM rule) 03:53 Let's solve the second largest subnet 06:40 Working through all subnets step by step Topology used: 192.168.1.0/24 — Toronto LAN A (45 hosts) · New York LAN B (29 hosts) R1 and R2 connected via point-to-point link VLSM design steps: 1. List all segments largest to smallest 2. Assign the first available block to the largest segment 3. Next available block to the next segment — no gaps 4. Point-to-point links always use /30 (2 usable hosts) 📌 Subnetting Part 1 (watch first) →    • Subnetting — CCNA 200-301 | IP Classes, Bi...   📌 Full CCNA playlist →    • CCNA Fundamentals — Full Course | Packet M...   🔗 Free structured CCNA sessions → https://packetmentor.com #CCNA #VLSM #VariableLengthSubnetMasking #Subnetting #PacketTracer #CCNA200301 #CiscoNetworking #IPAddressing #PacketMentor #CCNAExam #SubnettingLab