Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 549)

Spanning Tree Commands
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 19.59
spanning-tree portfast bpdu-filter
This command sets the bpdu-filter feature and applies a filter to any BPDUs (Bridge
Protocol Data Units) received. Enabling this feature ensures that configured ports will not
transmit any BPDUs and will ignore (filter out) any BPDUs received. BPDU Filter is not
enabled on a port by default.
Using the no variant of this command to turn off the bpdu-filter, but retain the port’s
status as an enabled port. If the port then receives a BPDU it will change its role from an
edge-port to a non edge-port.
Syntax
(Global
Configuration)
spanning-tree portfast bpdu-filter
no spanning-tree portfast bpdu-filter
Syntax
(Interface
Configuration)
spanning-tree portfast bpdu-filter {default|disable|enable}
no spanning-tree portfast bpdu-filter
Default BPDU Filter is not enabled on any ports by default.
Mode Global Configuration and Interface Configuration
Usage This command filters the BPDUs and passes only data to continue to act as an edge port.
Using this command in Global Configuration mode applies the portfast bpdu-filter feature
to all ports on the switch. Using it in Interface mode applies the feature to a specific port,
or range of ports.The command will operate in both RSTP and MSTP networks.
Use the show spanning-tree command to display status of the bpdu-filter parameter for
the switch ports.
Parameter Description
bpdu-filter A port that has bpdu-filter enabled will not transmit any BPDUs and
will ignore any BPDUs received. This port type has one of the
following parameters (in Interface Configuration mode):
default Takes the setting that has been configured for the whole
switch, i.e. the setting made from the Global
configuration mode.
disable Turns off BPDU filter.
enable Turns on BPDU filter.