Name: Cisco 2950 - Catalyst Switch
Brand: Cisco
Rating: 4 (1 reviews)

To Next Page

To Previous Page

CHAPTER

16-1

Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide

78-11380-10

Configuring Optional Spanning-Tree Features

This chapter describes how to configure optional spanning-tree features on your Catalyst 2950 or

Catalyst 2955 switch. You can configure all of these features when your switch is running the per-VLAN

spanning-tree plus (PVST+). You can configure only the noted features when your switch is running the

Multiple Spanning Tree Protocol (MSTP) or the rapid per-VLAN spanning-tree plus (rapid-PVST+)

protocol.

For information on configuring the PVST+ and rapid PVST+, see Chapter 14, “Configuring STP.” For

information about the Multiple Spanning Tree Protocol (MSTP) and how to map multiple VLANs to the

same spanning-tree instance, see Chapter 15, “Configuring MSTP.”

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

reference for this release.

This chapter consists of these sections:

• Understanding Optional Spanning-Tree Features, page 16-1

• Configuring Optional Spanning-Tree Features, page 16-12

• Displaying the Spanning-Tree Status, page 16-20

Understanding Optional Spanning-Tree Features

These sections describe how the optional spanning-tree features work:

• Understanding Port Fast, page 16-2

• Understanding BPDU Guard, page 16-2

• Understanding BPDU Filtering, page 16-3

• Understanding UplinkFast, page 16-3

• Understanding Cross-Stack UplinkFast, page 16-5

• Understanding BackboneFast, page 16-9

• Understanding EtherChannel Guard, page 16-11

• Understanding Root Guard, page 16-11

• Understanding Loop Guard, page 16-12

Questions and Answers:

Need help?

Do you have a question about the Cisco 2950 - Catalyst Switch and is the answer not in the manual?

Cisco 2950 - Catalyst Switch Specifications

General