Understanding Optional Spanning-Tree Features - Cisco Catalyst 2928 Software Configuration Manual

Configuring Optional Spanning-Tree Features
This chapter describes how to configure optional spanning-tree features on the Catalyst 2928 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
information about the Multiple Spanning Tree Protocol (MSTP) and how to map multiple VLANs to the
same spanning-tree instance, see
Note For complete syntax and usage information for the commands used in this chapter, see the command
reference for this release.
•
•
•

Understanding Optional Spanning-Tree Features

•
•
•
•
•
•
•
•
OL-23389-01
Understanding Optional Spanning-Tree Features, page 18-1
Configuring Optional Spanning-Tree Features, page 18-9
Displaying the Spanning-Tree Status, page 18-16
Understanding Port Fast, page 18-2
Understanding BPDU Guard, page 18-2
Understanding BPDU Filtering, page 18-3
Understanding UplinkFast, page 18-3
Understanding BackboneFast, page 18-5
Understanding EtherChannel Guard, page 18-7
Understanding Root Guard, page 18-8
Understanding Loop Guard, page 18-9
C H A P T E R
Chapter 17, "Configuring MSTP."
Catalyst 2928 Switch Software Configuration Guide
18
Chapter 16, "Configuring STP." For
18-1