Learn about Root Guard, a crucial component of the Spanning Tree Protocol (STP) Toolkit, in this 20-minute video from Jeremy's IT Lab CCNA 200-301 course. Explore the importance of proper Root Bridge placement and understand how Root Guard addresses potential network issues. Follow along with a CLI demonstration to see Root Guard in action. Gain valuable insights into network security and stability as part of your CCNA preparation. This video is the third part of Day 21 in a comprehensive free course, offering quizzes, flashcards, and practice labs to reinforce your learning.