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Catalyst 3560 Switch Command Reference
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Chapter 2 Catalyst 3560 Switch Cisco IOS Commands
spanning-tree bpdufilter
spanning-tree bpdufilter
Use the
spanning-tree bpdufilter
interface configuration command to prevent an interface from sending
or receiving bridge protocol data units (BPDUs). Use the
no
form of this command to return to the
default setting.
spanning-tree bpdufilter
{
disable
|
enable
}
no spanning-tree bpdufilter
Syntax Description
Defaults
BPDU filtering is disabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
You can enable the BPDU filtering feature when the switch is operating in the per-VLAN spanning-tree
plus (PVST+), rapid-PVST+, or the multiple spanning-tree (MST) mode.
Caution
Enabling BPDU filtering on an interface is the same as disabling spanning tree on it and can result in
spanning-tree loops.
You can globally enable BPDU filtering on all Port Fast-enabled interfaces by using the
spanning-tree
portfast bpdufilter default
global configuration command.
You can use the
spanning-tree bpdufilter
interface configuration command to override the setting of
the
spanning-tree portfast bpdufilter default
global configuration command.
Examples
This example shows how to enable the BPDU filtering feature on a port:
Switch(config)#
interface gigabitethernet0/1
Switch(config-if)#
spanning-tree bpdufilter enable
You can verify your setting by entering the
show running-config
privileged EXEC command.
disable
Disable BPDU filtering on the specified interface.
enable
Enable BPDU filtering on the specified interface.
Release
Modification
12.1(19)EA1
This command was introduced.
