Why Spanning Tree Protocol?

Spanning Tree Protocol (STP) is a link management protocol that provides path redundancy while preventing undesirable loops in the network. When it comes to ethernet networks, only one active path can exist between two stations in order for them to function properly. Loops occur in networks for a variety of reasons.

Why do we need Spanning Tree Protocol?

Spanning Tree Protocol (STP) is a Layer 2 protocol that runs on bridges and switches. The specification for STP is IEEE 802.1D. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network.

Why spanning tree topology is necessary for routing using a bridge?

Since more than one path may exist between two LANs, packets may have to be routed through multiple bridges. Why is the spanning tree algorithm used for bridge-routing? Explanation: The main idea for using Spanning Trees is to avoid loops. See Spanning Tree Protocol for more details.