Spanning-Tree Portfast (Interface Configuration) - Cisco Catalyst 3550 Command Reference Manual

Multilayer switch

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Table of Contents

Chapter 2 Cisco IOS Commands

This example shows how to enable the Port Fast feature on an interface:

Switch(config)# interface fastethernet0/2

Switch(config-if)# spanning-tree portfast

You can verify your settings by entering the show running-config privileged EXEC command.

Related Commands

show running-config

spanning-tree bpdufilter

spanning-tree bpduguard

spanning-tree portfast (global

configuration)

Displays the current operating configuration. For syntax

information, select Cisco IOS Configuration Fundamentals

Command Reference for Release 12.1 > Cisco IOS File

Management Commands > Configuration File Commands.

Prevents a port from sending or receiving bridge protocol data units

Puts a port in the error-disabled state when it receives a BPDU.

Globally enables the BPDU filtering or the BPDU guard feature on

Port Fast-enabled ports or enables the Port Fast feature on all

nontrunking ports.

Catalyst 3550 Multilayer Switch Command Reference

spanning-tree portfast (interface configuration)