Spanning-tree portfast bpdu-guard default – Allied Telesis AT-S100 User Manual
Page 254
Chapter 10: Spanning Tree Protocol (STP) Commands
254
Section II: Advanced Configuration
SPANNING-TREE PORTFAST BPDU-GUARD DEFAULT
Syntax
spanning-tree portfast bpdu-guard default
no spanning-tree portfast bpdu-guard default
Parameters
none
Description
Use the SPANNING-TREE BPDU-GUARD DEFAULT command to enable
the BPDU (Bridge Protocol Data Unit) guard feature on a bridge. This
command indicates the bridge level BPDU-Guard configuration takes
effect.
When the BPDU guard feature is set for a bridge, all portfast-enabled
interfaces of the bridge that have the BPDU guard set to default shut down
the interface on receiving a BPDU. In this case, the BPDU is not
processed. You can bring the interface up manually by using the NO
SHUTDOWN command.
Use the no form of the SPANNING-TREE BPDU-GUARD command to
disable the BPDU-guard feature on a bridge.
Command Mode
Configuration Terminal mode
Example
The following commands enable the BPDU Guard feature on a bridge:
switch#configure terminal
switch(config)#spanning-tree portfast bpdu-guard
Related Commands