# Question: What Is STP Instance?

## What is STP explain its convergence process?

Spanning Tree Protocol (STP) convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state.

When layer 2 is converged, Root Switch is elected and Root Ports, Designated Ports and Non-Designated ports in all switches are selected..

## How do I calculate STP?

It can be written as: V = nRT/P. “P” is pressure, “V” is volume, n is the number of moles of a gas, “R” is the molar gas constant and “T” is temperature.

## What is STP and how it works?

The Spanning Tree Protocol (STP) is responsible for identifying links in the network and shutting down the redundant ones, preventing possible network loops. In order to do so, all switches in the network exchange BPDU messages between them to agree upon the root bridge.

## What is STP and what is the main purpose of using it?

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. … In 2001, the IEEE introduced Rapid Spanning Tree Protocol (RSTP) as 802.1w.

## Why is STP used?

STP most commonly is used when performing calculations on gases, such as gas density. The standard temperature is 273 K (0° Celsius or 32° Fahrenheit) and the standard pressure is 1 atm pressure. This is the freezing point of pure water at sea level atmospheric pressure.

## What is STP and its types?

There are many types of STP variants. … Cisco’s proprietary variants are Per-VLAN Spanning Tree Protocol (PVST), Per-VLAN Spanning Tree Protocol Plus (PVST+) and Rapid PVST+. IEEE’s standards are Rapid Spanning Tree Protocol (RSTP) and Multiple STP (MSTP).

## What is STP in ATM?

Standard Temperature and Pressure. Standard temperature is equal to 0 °C, which is 273.15 K. Standard Pressure is 1 Atm, 101.3kPa or 760 mmHg or torr. STP is the “standard” conditions often used for measuring gas density and volume. At STP, 1 mole of any gas occupies 22.4L.

## What pressure is STP?

105 PascalsThe conditions set by STP is a temperature of 273.15 K (0°C or 32°F) and a pressure of 105 Pascals (formerly 1 atm, but IUPAC has since changed this standard).

## What is STP mode?

STP protects a Layer 2 Broadcast domain from Broadcast storms by selectively setting links to standby mode to prevent loops. STP provides a tree topology for any arrangement of switches and interconnecting links, creating a unique path between end stations on a network, eliminating loops. …

## What is the difference between STP and RSTP?

Rapid Spanning Tree Protocol (RSTP) is an evolution of the Spanning Tree Protocol (802.1D standard) and provides for faster spanning tree convergence after a topology change. … Spanning-Tree Protocol (STP) prevents loops from being formed when switches or bridges are interconnected via multiple paths.

## How is root bridge elected in STP?

All switches exchange BPDU in order to elect root bridge. The switch with the lowest Bridge I’d will become the root bridge. … If there is a tie on bridge priority then the Base Mac address is considered. Bridge Priority – It is priority, which is assigned to every switch, 32768 by default.

## Who owns STP oil?

The Clorox CompanySTP/Parent organizations