Advanced Spanning tree

Practice Labs Module
Time
40 minutes
Difficulty
Intermediate

The "Advanced Spanning-tree" module provides you with the instructions and Cisco hardware to develop your hands on skills in configuring advanced spanning-tree including RSTP and MST. This module includes the following exercises: 1. Rapid Spanning-tree (RSTP), 2. Configuring the Multiple Spanning-Tree Protocol (MST).

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Overview

Introduction

The Advanced Spanning-tree module provides you with the instructions and Cisco hardware to develop your hands on skills in configuring advanced spanning-tree including RSTP and MST. This module includes the following exercises:

  1. Rapid Spanning-tree (RSTP)
  2. Configuring the Multiple Spanning-Tree Protocol (MST)

Exercise 1 – Rapid Spanning-tree (RSTP)

In this exercise you will learn how to configure the rapid spanning-tree protocol.

Rapid Spanning-tree protocol

By default a Cisco switch will run PVST+ (or per-VLAN spanning-tree plus) and needs to be configured to run any other spanning-tree protocol. Configuring other spanning-tree methods is sometimes a little confusing, but in this module you’ll learn how to configure a few of these methods.

Exercise 2 – Configuring the Multiple Spanning-Tree Protocol (MST)

In this exercise you will learn how to configure the Multiple Spanning Tree Protocol (MST).

Multiple Spanning Tree

As you would have learnt in your course material, spanning-tree 802.1Q and PVST+ are at the extremes of spanning-tree. At the one side you have a single spanning-tree instance running on a switch and at the other you have an instance running for every VLAN, regardless if it is 10 or 100. Both of these protocols have their flaws, which is why MST was developed.