Spanning-Tree-Protocol(STP):-

Description:- This lab demonstrates the configuration and working of Spanning Tree Protocol (STP) to prevent loops in a switched network. With multiple switches connected in a redundant topology, STP ensures a loop-free logical path while maintaining redundancy for fault tolerance.

Topology:

3 Switches (2960-24TT) 2 PCs (PC0, PC1) Redundant links between switches forming a looped topology.

Steps:-

• Connect three switches and PCs in a triangular topology.
• Configure switch basic settings (hostname, VLAN, interfaces).
• Enable STP (default on Cisco switches).
• Observe how STP blocks redundant ports to avoid loops.
• Test connectivity with ping between PC0 and PC1.
• Shut down one active link to see STP automatically re-enable a previously blocked port.

Outcomes & Learnings:-

• Understand how STP avoids broadcast storms caused by loops.
• Learn how switches elect a Root Bridge.
• Observe how redundant paths provide fault tolerance.
• Gain hands-on experience with loop prevention in LAN design.

Benefits:-

• Provides network stability by avoiding loops.
• Ensures automatic failover in case of link failure.
• Essential knowledge for real-world LAN deployment.