Allied Telesis AT-S83 - Manual (Page 264)

Chapter 13: Spanning Tree Protocol (STP) Commands
264
SPANNING-TREE PORTFAST BPDU-GUARD ENABLE
Syntax
spanning-tree portfast bpdu-guard
enable|disable|default
no spanning-tree portfast bpdu-guard
Parameters
enable Enables the BPDU-Guard feature on the switch. This
configuration takes precedence over bridge configuration.
disable Disables the BPDU-Guard feature on the switch. This
configuration takes precedence over bridge configuration.
default Indicates the bridge level BPDU-Guard configuration takes
effect.
Description
The SPANNING-TREE PORTFAST BPDU-GUARD ENABLE command
supersedes the bridge level configuration for the BPDU Guard feature.
When the enable or disable parameter is used with this command, this
configuration takes precedence over bridge configuration. However, when
the default parameter is used with this command, the bridge-level-BPDU-
guard configuration takes effect. Use the SPANNING-TREE PORTFAST
BPDU-GUARD command to configure the BPDU Guard feature on a
bridge.
Use the SHOW SPANNING-TREE command to display the bridge and
interface configurations for the BPDU Guard feature. It shows both the
administratively configured and currently running values of the BPDU-
guard feature.
Command Mode
Configuration Terminal mode
Example
The following commands disable the BPDU guard feature on the switch:
switch#configure terminal
switch(config)#spanning-tree portfast bpdu-guard
disable