2-704Cisco Catalyst Blade Switch 3120 for HP Command ReferenceOL-12248-03Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commandsspanning-tree bpdufilterspanning-tree bpdufilterUse the spanning-tree bpdufilter interface configuration command on the switch stack or on astandalone 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 bpdufilterSyntax DescriptionDefaults BPDU filtering is disabled.Command Modes Interface configurationCommand HistoryUsage Guidelines You can enable the BPDU filtering feature when the switch is operating in the per-VLAN spanning-treeplus (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 inspanning-tree loops.You can globally enable BPDU filtering on all Port Fast-enabled interfaces by using the spanning-treeportfast bpdufilter default global configuration command.You can use the spanning-tree bpdufilter interface configuration command to override the setting ofthe 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 gigabitethernet2/0/1Switch(config-if)# spanning-tree bpdufilter enableYou 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 Modification12.2(40)EX1 This command was introduced.
