Cisco Catalyst 4500 Series Administration Guide

CHAPTER
25-1
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
25
Configuring Optional STP Features
This chapter describes the Spanning Tree Protocol (STP) features supported on the Catalyst 4500 series
switch. It also provides guidelines, procedures, and configuration examples.
This chapter includes the following major sections:
• About Root Guard, page 25-2
• Enabling Root Guard, page 25-2
• About Loop Guard, page 25-3
• Enabling Loop Guard, page 25-4
• About EtherChannel Guard, page 25-6
• Enabling EtherChannel Guard (Optional), page 25-6
• About PortFast, page 25-6
• Enabling PortFast, page 25-7
• About BPDU Guard, page 25-8
• Enabling BackboneFast, page 25-15
• About PortFast BPDU Filtering, page 25-9
• Enabling BackboneFast, page 25-15
• About UplinkFast, page 25-11
• Enabling UplinkFast, page 25-12
• About BackboneFast, page 25-13
• Enabling BackboneFast, page 25-15
Note For information on configuring STP, see Chapter 22, “Configuring STP and MST.”
Note For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/hw/switches/ps4324/index.html
If a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E