This video shows you issues with Spanning Tree (STP) defaults. The core switch in the network is blocking all ports!! Why?? Go here to access the course: This is part of my CCNA 200-125 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

  • David Bombal