31 Days Before Your CCNA Exam

Day 23VLAN and Trunking Configurationand TroubleshootingCCNA 640-802 Exam Topics■■Configure, verify, and troubleshoot VLANsConfigure, verify, and troubleshoot trunking on Cisco switchesKey PointsThe following sections present a sample topology and the commands to configure, verify, and troubleshootVLANs and trunking. The review for today is brief so that you can spend your time practicingyour configuration, verification, and troubleshooting skills.Sample TopologyFor today’s exam topics, we will use the topology shown in Figure 23-1 to review the commandsfor configuring, verifying, and troubleshooting VLAN and trunking. I strongly recommend thatyou build and configure this topology—either using real equipment or a network simulator—aspart of your review for the CCNA exam.Figure 23-1Day 23 Sample TopologyVLAN 1—Control Traffic - 172.17.1.0/24VLAN 10—Faculty/Staff - 172.17.10.0/24VLAN 20—Students - 172.17.20.0/24VLAN 30—Guest (Default) - 172.17.30.0/24VLAN 99—Management and Native - 172.17.99.0/24PortsF0/1-5 are 802.1Q trunk interfaceswith native VLAN 99F0/11-17 are in VLAN 10F0/18-24 are in VLAN 20F0/6-10 are in VLAN 30Interface vlan 99172.17.99.31/24PC1F0/1S1F0/3PC4172.17.10.21F0/11TrunkTrunkF0/11172.17.10.24PC2F0/18S2F0/1F0/3S3F0/18PC5172.17.20.22F0/6Interface vlan 99172.17.99.32/24Interface vlan 99172.17.99.33/24F0/6172.17.20.25PC3PC6172.17.30.23172.17.30.26