Spanning-Tree Bpdufilter - Cisco ME 3400 Command Reference Manual

spanning-tree bpdufilter

spanning-tree bpdufilter
Use the spanning-tree bpdufilter interface configuration command on a network node interface (NNI)
or enhanced network interface (ENI) with STP enabled to prevent the interface from sending or receiving
bridge protocol data units (BPDUs). Use the no form of this command to return to the default setting.
Syntax Description
disable
enable
Defaults BPDU filtering is disabled.
Command Modes Interface configuration
Command History Release
12.2(25)EX
Usage Guidelines Spanning Tree Protocol (STP) is not supported on user network interfaces (UNIs). You can configure
BPDU filtering only on NNIs or on ENIs on which STP has been enabled. To set a port as an NNI or
ENI, enter the port-type {nni | eni} interface configuration command. To enable STP on an ENI, enter
the spanning-tree interface configuration command.
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 STP port is the same as disabling spanning tree on it and can result in
Caution
spanning-tree loops.
You can globally enable BPDU filtering on all Port Fast-enabled STP ports by using the spanning-tree
portfast bpdufilter default global configuration command.
You can use the spanning-tree bpdufilter interface configuration command on an STP port 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.
Cisco ME 3400 Ethernet Access Switch Command Reference
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spanning-tree bpdufilter {disable | enable}
no spanning-tree bpdufilter
Disable BPDU filtering on the specified STP port.
Enable BPDU filtering on the specified STP port.
Modification
This command was introduced.
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
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