Spanning-Tree Bpdufilter - Cisco Catalyst 3560-X Command Reference Manual

Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands

spanning-tree bpdufilter

Syntax Description
Defaults
Command Modes
Command History
Usage Guidelines
Caution
Examples
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Use the spanning-tree bpdufilter interface configuration command on the switch stack or on a
standalone switch 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
disable Disable BPDU filtering on the specified interface.
enable Enable BPDU filtering on the specified interface.
BPDU filtering is disabled.
Interface configuration
Release
12.2(53)SE2
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.
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.
This example shows how to enable the BPDU filtering feature on a port:
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# spanning-tree bpdufilter enable
You can verify your setting by entering the show running-config privileged EXEC command.
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Modification
This command was introduced.
Catalyst 3750-X and 3560-X Switch Command Reference
spanning-tree bpdufilter
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