In this article we will discuss STP, will make brief discussion on STP, last article we discuss about VTP.

The Spanning Tree Protocol (STP) is a network protocol that builds a loop-free logical topology for Ethernet networks. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them.

STP uses the Spanning-Tree Algorithm (SPA) to create a topology database of the nework. To prevent loops, SPA places some interfaces into forwarding state and some interfaces into blocking state.

Spanning Tree Protocol (STP) is a network protocol designed to prevent layer 2 loops. It is standardized as IEEE 802.D protocol. STP blocks some ports on switches with redundant links to prevent broadcast storms and ensure loop-free topology.

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. To enable Spanning Tree Protocol (STP) on an IOS based switch, use the “spanning-tree vlan vlan_number” command from global configuration mode as shown below. Enter configuration commands, one per line. End with CNTL/Z.

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