Enabling Bpdu Filtering Globally; Enabling Bpdu Filtering On Specified Interfaces - Cisco N5010P-N2K-BE Software Configuration Manual

Configuring STP Extensions
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
To disable BPDU Guard on an interface, perform this task:
Command
switch(config-if)# no spanning-tree
bpduguard

Enabling BPDU Filtering Globally

You can enable BPDU Filtering globally by default on spanning tree edge ports.
If an edge port with BPDU Filtering enabled receives a BPDU, it loses its operation status and as edge
port and resumes the regular STP transitions. However, this port maintains it configuration as an edge
port.
Be careful when using this command. Using this command incorrectly can cause bridging loops.
Caution
Before you configure this feature, you should do the following:
•
•
When enabled globally, BPDU Filtering is applied only on ports that are operational edge ports. Ports
Note
send a few BPDUs at linkup before they effectively filter outbound BPDUs. If a BPDU is received on an
edge port, it immediately loses its operational edge port status and BPDU Filtering is disabled.
To enable BPDU Filtering globally, perform this task:
Command
Step 1
switch# configure terminal
Step 2
switch(config)# spanning-tree port type
edge bpdufilter default
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.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
10-10
Ensure that STP is configured.
Ensure that you have configured some spanning tree edge ports.
Chapter 10
Purpose
Enables BPDU Guard on the interface if it is an
operational edge port and if you enter the
spanning-tree port type edge bpduguard default
command.
Purpose
Enters configuration mode.
Enables BPDU Filtering by default on all operational
spanning tree edge ports. Global BPDU Filtering is
disabled by default.
Configuring STP Extensions
OL-16597-01