Spanning Tree Protocol Explained | Step by Step

Join the Discord Server!
https://discord.com/invite/QZ2B9GA3BH
---------------------
MY FULL CCNA COURSE
📹 CCNA - https://certbros.teachable.com/p/cisco-ccna?utm_source=youtube&utm_medium=desc&utm_campaign=CCNA

FREE CCNA FLASHCARDS
🃏 CCNA Flashcards - https://certbros.com/ccna/flashcards

HOW TO PASS THE CCNA
📚 Get a great book - https://amzn.to/3f16QA5
📹 Take a video course - https://certbros.teachable.com/p/cisco-ccna?utm_source=youtube&utm_medium=desc&utm_campaign=CCNA
✔ Use practice exams - https://www.certbros.com/ccna/Exsim

SOCIAL
🐦 Twitter - https://twitter.com/certbros
📸 Instagram - https://www.instagram.com/certbros
👔 LinkedIn - https://www.linkedin.com/company/certbros
💬 Discord - https://www.certbros.com/discord

Disclaimer: These are affiliate links. If you purchase using these links, I'll receive a small commission at no extra charge to you.
---------------------------------------------------------------------------------------------------------------

Spanning Tree Protocol / STP is a big topic on the CCNA exam. Many people struggle with STP so in this video, we try to break it down as much as possible. Spanning Tree follows a strict set of rules which when learnt, will allow you to answer any STP questions you get.

This video focus on the standard 802.1d (and PVST+) which is the original STP standard.

Election Process

1. Elect a Root Bridge
Switch with the lowest BID

2. Place all Root Bridge interfaces in to a Forwarding state

3. Each Non-Root switch elects a Root Port
Lowest cost
Lowest neighbour BID
Lowest neighbour port priority
Lowest neighbour port number

4. Elect a Designated Port
Lowest root cost
Lowest BID
Lowest neighbour port priority
Lowest neighbour port number

5. All other ports are placed in to a Blocking State


#ccna #cisco #networking