Cisco CCNA Spanning Tree Basics

This is a course that will start from the very beginning of spanning tree and you will walk away with how it begins.
Free tutorial
Rating: 4.8 out of 5 (776 ratings)
33,633 students
1hr 51min of on-demand video
English [Auto]

Learn the Basics of Spanning Tree from Scratch
Learn how Time-To-Live Works
Learn What a Loop is
Learn what a Single Point of Failure is
Learn what Redunancy means
Learn Why we need Spanning Tree
Learn Why it is Called Spanning Tree
Learn what BPDUs are
Learn what a Root Bridge is
Learn what a Root Port is
Learn what a Designated Port is
Learn what a Blocking Port is
Learn what a Bridge-ID is
Learn what Spanning Tree Cost is
Learn what Spanning Tree Port-Priority is
Learn how the Root Bridge Election Works
Learn how the Root Port Election Works


  • You should know basic Switching concepts but not 100% necessary
  • Spanning Tree is a seperate lesson and can be learned without previous knowledge
  • A CCNA Studnet should learn Spannning Tree after learning Networking and Switching Fundementals, but it is not 100% necessary


You heard the words Spanning Tree, now it is time to understand what it is all about. We start with the very beginning, discussing how L3 uses a mechanism to prevent loops. We quickly find out that L2 does not have this mechanism and why Spanning Tree is needed. Then we enter the world of Spanning Tree. Exploring how spanning tree forms it topology and the election processes.

From there we enter into a step by step process, understanding how Spanning Tree starts to build its own topology. We learn about the Root Bridge, Root Ports, Designated Ports, Blocking ports, and so on.

If you want to really understand Spanning Tree, this is where you begin. I assure you that after you watch this 2.5hr lecture and take the 5 quizes, you will have a solid Spanning Tree Basics foundation.

This was a class that I ran and recorded. I took that footage and edited just for Udemy students. Please let me know how you like this course, for there is more to come.

Who this course is for:

  • This course is for those who want to learn spanning tree
  • If you have no idea what spanning tree is, this course is for you
  • Those who need a review of Spanning Tree
  • This is not for those looking for advance Spanning Tree topics
  • Those who need a review of Spanning Tree Basics
  • Those who question their spanning knowledge
  • This course will NOT cover Spanning Tree Timers or Port Roles
  • This course will NOT cover the Listening, Learning, and Forwarding stages


CCIE #54443
Kiel Martin
  • 4.5 Instructor Rating
  • 4,695 Reviews
  • 151,571 Students
  • 6 Courses

My name is Kiel Martin CCIE #54443. I have been teaching Cisco topics for a while now and I take great pride in getting others to use the equipment to get the answers that they are seeking. So I spend lots of time helping others to learn the basics and advanced topics of Routing and Switching. We spend lots of time behind the command line and using labs to provide us the answers that theory claims to exist. Come learn the concepts the right way.

When is comes to understanding what it takes to pass, I do not sugar coat it. I currently work as a Network Engineer in a Multi-Tier Large Enterprise environments. My teaching techniques are based on the concept of keeping it simple and straight to the point. You will notice a difference in my teaching immediately.

Certifications: CCNA, CCNP, CCIP, CCIE, JNCIA-Junos, JNCIS-ENT, Palo Alto ACE

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