CCNA - Spanning Tree Protocol - Part 1

This lesson introduces classic Spanning Tree Protocol and Cisco Per-VLAN Spanning Tree, explaining network redundancy, Layer 2 loops, BPDUs, root bridge election, port roles, and loop-prevention blocking. It includes knowledge checks and references supplementary Packet Tracer practice.

Syllabus

Introduction.
Things we'll cover.
Network Redundancy.
Layer 2 Loops (Broadcast Storms).
STP Intro.
Hubs, bridges, and switches.
STP Demonstration.
STP Intro (cont.).
STP BPDUs, Root Bridge election.
Root Bridge election demo.
PVST, Extended System ID.
Root Bridge (cont.).
STP Quiz 1 (identify the Root Bridge).
STP Quiz 2 (identify the Root Bridge).
STP Port Role selection (Root Port selection via Root Cost).
Root Cost.
STP Port Role selection (Root Port selection via Neighbor Bridge ID).
STP Quiz 3 (Identify Root Bridge, Root Ports).
STP Port Role selection (Root Port selection via Neighbor Port ID).
STP Quiz 4 (Identify Root Port).
Blocking Ports to prevent loops.
Non-Designated Port selection.
STP Process Summary.
STP Quiz 5 (Identify Root Bridge, Port Roles).
STP Quiz 6 (Identify Root Bridge, Port Roles).
Boson ExSim.