Preventing STP Loops: The Power of STP Loop Guard / (Vol 1 Ch 10 Sec 3c)

Fiber optic links between switches can fail in ways that create a unidirectional link: A link that can forward frames in only one direction. In that case, normal Spanning Tree operation may choose an STP topology that creates a forwarding loop.
In this video, learn about the underlying cause (the unidirectional link), and how the STP Loop Guard feature can be used to prevent STP from creating the forwarding loop.

*Chapters*
00:00 Intro
01:31 Loop Guard STP Basics
06:22 Unidirectional Links and Loop Guard
12:18 Interface Config
15:23 Global Config
16:22 Exam Success


*Link – Level Up to CCNA V1.1 Without Spending Money*
Free CCNA V1.1 Study Tools
https://youtu.be/ab_Xrs-Lz9Y


*Link – New Books in 2024*
Cisco Makes Minor Updates to the CCNA Blueprint (Version 1.1)
https://youtu.be/B5te6ZoJQno

Major Updates to the CCNA Books
https://youtu.be/fUMof_bBfio

Which Blueprint Should You Pursue? (2024)
https://youtu.be/V73V_dlgdto


====================================================================
*Product Links*
Product links below. I make a small affiliate sales commission if you buy something!

CCNA Library (Two Book Set):
📚 https://ccna.link/nu-cp-lib-ed2

All CCNA products at Cisco Press:
🖨️ https://ccna.link/nu-cp-allccna

All Wendell's products at Cisco Press:
🧔🏼‍♂️ https://ccna.link/nu-cp-allwo

Ciscopress.com/NewCerts Page (News, Announcements):
📰 https://ccna.link/nu-cp-newcerts
====================================================================