This is one of multiple videos explaining and demonstrating DHCP SNOOPING which is part of my GNS3 CCNA course. Go here to access the course: The course includes: 1) Video Training 2) Simulations 3) GNS3 Lab Guides 4) Quiz questions to help you prepare for the exam 4) Software to create IPSec VPN tunnels 5) Software and calculators All the best with your CCNA exam preparation!