STP - Creating a looped topology and

Contents

Introduction
Prerequisites
     Requirements
     Components Used
     SmartBits Configuration Summary
Topology
Configuring the SmartBits port and enabling Spanning-Tree
Setting up traffic streams and adjust the Tx load
Verifying the traffic rate on the receiving port
Simulating a failure and recovery of the Root Bridge

Introduction

The purpose of this document is to provide the user step-by-step instructions to configure a looped
Spanning-Tree topology and test basic Root Bridge failover.

Prerequisites

Requirements

The following HW/SW are required:

• SmartBits 600 or 6000 chassis with TeraMetrics module
• TeraRouting Tester (TRT) client application installed on workstation
• DUT - switch supporting 802.1d Spanning-Tree protocol and configured to match the topology

Components Used

The following components were used:

• Switch with three interfaces connected to SmartBits ports
• SmartBits 6000 chassis with TeraMetrics module
• TeraRouting Tester (TRT) version 4.50

• Setup two Smartbits ports as Primary and Backup Root Bridges
• Use a third SmartBits port as an endpoint to measure the amount of traffic received from both bridges
• Simulate a Root Bridge failure interactively and verify that the DUT had failed over properly to the Backup Root Bridge
  
• Simulate a Root bridge recovery interactively and verify that the DUT switches back to the Primary Root Bridge
  

*** NOTE: Before starting, please connect to the chassis. For help, click here ***
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Topology

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