Enabling Bpdu Filtering On Specified Interfaces - Cisco Nexus 3000 Series Configuration Manual

Configuring STP Extensions
Procedure
Step 1
Step 2
This example shows how to enable BPDU Filtering on all operational spanning tree edge ports:
switch# configure terminal
switch(config)# spanning-tree port type edge bpdufilter default

Enabling BPDU Filtering on Specified Interfaces

You can apply BPDU Filtering to specified interfaces. When enabled on an interface, that interface does not
send any BPDUs and drops all BPDUs that it receives. This BPDU Filtering functionality applies to the entire
interface, whether trunking or not.
Caution Be careful when you enter the spanning-tree bpdufilter enable command on specified interfaces. Explicitly
configuring BPDU Filtering on a port that is not connected to a host can result in bridging loops because
the port ignores any BPDU it receives and goes to forwarding.
You can enter this command to override the port configuration on specified interfaces.
This command has three states:
• spanning-tree bpdufilter enable—Unconditionally enables BPDU Filtering on the interface.
• spanning-tree bpdufilter disable—Unconditionally disables BPDU Filtering on the interface.
• no spanning-tree bpdufilter—Enables BPDU Filtering on the interface if the interface is an operational
When you enable BPDU Filtering locally on a port, this feature prevents the device from receiving or
Note
sending BPDUs on this port.
Before You Begin
Ensure that STP is configured.
OL-29545-03
Command or Action
switch# configure terminal
switch(config)# spanning-tree port type
edge bpdufilter default
edge port and if you configure the spanning-tree port type edge bpdufilter default command.
Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 6.x
Enabling BPDU Filtering on Specified Interfaces
Purpose
Enters global configuration mode.
Enables BPDU Filtering by default on all
operational spanning tree edge ports. Global BPDU
Filtering is disabled by default.
113