Spanning-tree bpdufilter – Dell POWEREDGE M1000E User Manual

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Cisco Catalyst Blade Switch 3120 for HP Command Reference

OL-12248-03

Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands

spanning-tree bpdufilter

spanning-tree bpdufilter

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

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 gigabitethernet2/0/1

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

12.2(40)EX1

This command was introduced.

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