VLAN Trunking in Packet Tracer Using 3 Cisco Switches | Step-by-Step CCNA Lab

VLAN Trunking in Cisco Packet Tracer: learn how to configure trunk links between 3 Cisco 2960 switches so devices in the same VLAN can communicate across different switches. Step-by-step CCNA lab using access ports, VLANs, and 802.1Q trunking. Why can't devices in the same VLAN talk across different switches? Because inter-switch links default to access ports in VLAN 1, so VLAN 10 and VLAN 20 traffic never crosses. In this lab, we fix it with trunk ports. 📌 TIMESTAMPS 0:00 Introduction & Lab Topology Overview 0:22 Adding Switches, Router & End Devices 0:50 Connecting Network Cables 1:17 Assigning IP Addresses (VLAN 10 & VLAN 20) 2:38 Configuring Switch0 (VLANs, Access & Trunk Ports) 3:50 Configuring Switch1 (Dual Trunk Links) 4:48 Configuring Switch2 (VLANs & Trunk Link) 5:23 Verifying Trunks (show vlan brief, show interfaces trunk) 5:54 Testing Ping Connectivity Across Switches 6:40 Why Inter-VLAN Pings Fail (Next Steps) 🎯 WHAT YOU WILL LEARN Why VLANs fail across multiple switches How to create VLANs and assign access ports How to configure 802.1Q trunk ports (switchport mode trunk) How to verify with show vlan brief and show interfaces trunk Why inter-VLAN communication needs a Layer 3 device 🖥 LAB DETAILS Devices: 3x Cisco 2960 switches, 6x PCs (router added for the next lab) VLAN 10 (HR): PC0 192.168.1.2 | PC2 192.168.1.3 | PC4 192.168.1.4 VLAN 20 (IT): PC1 192.168.2.2 | PC3 192.168.2.3 | PC5 192.168.2.4 Subnet mask: 255.255.255.0 💻 CLI COMMANDS USED enable configure terminal vlan 10 name HR vlan 20 name IT interface FastEthernet0/1 switchport mode access switchport access vlan 10 interface FastEthernet0/2 switchport mode access switchport access vlan 20 interface FastEthernet0/24 switchport mode trunk end show vlan brief show interfaces trunk 🛠 TROUBLESHOOTING TIPS Both ends of every link must be set to trunk VLANs must exist on all three switches The first ping may time out while ARP resolves, so try again ▶ Basic LAN Setup    • LAN Configuration in Cisco Packet Tracer |...   ▶ Static Routing Configuration    • Static Routing in Cisco Packet Tracer Usin...   ▶ RIP Routing Configuration    • RIP Configuration in Cisco Packet Tracer |...   ▶ OSPF Routing Configuration    • The Easiest Way to Configure OSPF in Packe...   🔔 Subscribe to CypherRoute for more Cisco Packet Tracer labs, CCNA exam prep, and real-world networking guides. #CiscoPacketTracer #CCNA #VLANTrunking