Understanding Optional Spanning-Tree Features - Cisco Catalyst 2950 Software Configuration Manual

Configuring Optional Spanning-Tree Features
This chapter describes how to configure optional spanning-tree features. You can configure all of these
features when your switch is running the per-VLAN spanning-tree (PVST); however, you can only
configure the noted features when your switch is running the Multiple Spanning Tree Protocol (MSTP).
To use these features with MSTP, you must have the enhanced software image installed on your switch.
For information on configuring the Spanning Tree Protocol (STP), see
For information on configuring the Rapid Spanning Tree Protocol (RSTP) and the Multiple Spanning
Tree Protocol (MSTP), see
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:
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Understanding Optional Spanning-Tree Features

The section describes how the optional spanning-tree features work. It contains these sections:
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78-11380-04
Chapter 11, "Configuring RSTP and MSTP."
Understanding Optional Spanning-Tree Features, page 12-1
Configuring Optional Spanning-Tree Features, page 12-13
Displaying the Spanning-Tree Status, page 12-21
Understanding Port Fast, page 12-2
Understanding BPDU Guard, page 12-3
Understanding BPDU Filtering, page 12-3
Understanding UplinkFast, page 12-4
Understanding Cross-Stack UplinkFast, page 12-5
Understanding BackboneFast, page 12-10
Understanding Root Guard, page 12-12
Understanding Loop Guard, page 12-13
C H A P T E R
Catalyst 2950 Desktop Switch Software Configuration Guide
12
Chapter 10, "Configuring STP."
12-1