Command Line Interface Guide

Spanning Tree Commands 753
User Guidelines
This command has no user guidelines.
Example
The following example enables spanning-tree functionality.
console(config)#spanning-tree
spanning-tree auto-portfast
Use the spanning-tree auto-portfast command to set the port to auto portfast
mode. This enables the port to become a portfast port if it does not see any
BPDUs for 3 seconds. Use the no form of this command to disable auto
portfast mode.
Syntax
spanning-tree auto-portfast
no spanning-tree auto-portfast
Default Configuration
Auto portfast mode is enabled by default.
Command Mode
Interface Configuration (Ethernet, Port Channel) mode
Usage Guidelines
There are no user guidelines for this command.
Example
The following example enables spanning-tree functionality on gigabit
ethernet interface 4/0/1.
console#config
console(config)#interface gigabitethernet 4/0/1
console(config-if-4/0/1)#spanning-tree auto-portfast
2CSPC4.X8100-SWUM100.book Page 753 Wednesday, August 29, 2012 6:23 PM