Cisco Catalyst 2950 - Understanding Basic STP Features; MAC Address Allocation

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CHAPTER

9-1

Catalyst 2950 Desktop Switch Software Configuration Guide

78-11380-03

Configuring STP

This chapter describes how to configure the Spanning Tree Protocol (STP) on your switch.

Note For complete syntax and usage information for the commands used in this chapter, refer to the

Catalyst 2950 Desktop Switch Command Reference for this release.

This chapter consists of these sections:

• Understanding Basic STP Features, page 9-1

• Understanding Advanced STP Features, page 9-9

• Configuring Basic STP Features, page 9-20

• Configuring Advanced STP Features, page 9-30

Understanding Basic STP Features

This section describes how basic STP features work. It includes this information:

• Supported STP Instances, page 9-2

• STP Overview, page 9-2

• Election of the Root Switch, page 9-3

• Bridge Protocol Data Units, page 9-3

• STP Timers, page 9-4

• Creating the STP Topology, page 9-4

• STP Interface States, page 9-5

• MAC Address Allocation, page 9-8

• STP Address Management, page 9-8

• STP and IEEE 802.1Q Trunks, page 9-8

• STP and Redundant Connectivity, page 9-8

• Accelerated Aging to Retain Connectivity, page 9-9

For configuration information, see the “Configuring Basic STP Features” sectiononpage9-20.

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