Cisco Nexus 5500 Series Command Reference Manual page 204

spanning-tree port type edge bpdufilter default
spanning-tree port type edge bpdufilter default
To enable bridge protocol data unit (BPDU) Filtering by default on all spanning tree edge ports, use the
spanning-tree port type edge bpdufilter default command. To disable BPDU Filtering by default on
all edge ports, use the no form of this command.
Syntax Description
This command has no arguments or keywords.
Command Default
Disabled
Command Modes Global configuration mode
Command History Release
5.2(1)N1(1)
Usage Guidelines
To enable BPDU Filtering by default, you must do the following:
•
•
Use this command to enable BPDU Filtering globally on all spanning tree edge ports. BPDU Filtering
prevents a port from sending or receiving any BPDUs.
Be cautious when using this command; incorrect usage can cause bridging loops.
Caution
You can override the global effects of this spanning-tree port type edge bpdufilter default command
by configuring BPDU Filtering at the interface level. See the spanning-tree bpdufilter command for
complete information on using this feature at the interface level.
The BPDU Filtering feature's functionality is different when you enable it on a per-port basis or globally.
Note
When enabled globally, BPDU Filtering is applied only on ports that are operational spanning tree edge
ports. Ports send a few BPDUs at a linkup before they effectively filter outbound BPDUs. If a BPDU is
received on an edge port, that port immediately becomes a normal spanning tree port with all the normal
transitions and BPDU Filtering is disabled. When enabled locally on a port, BPDU Filtering prevents the
switch from receiving or sending BPDUs on this port.
Cisco Nexus 5500 Series NX-OS Layer 2 Interfaces Command Reference
1198
spanning-tree port type edge bpdufilter default
no spanning-tree port type edge bpdufilter default
Modification
This command was introduced.
Configure the interface as a spanning tree edge port, using the spanning-tree port type edge or the
spanning-tree port type edge default command.
Enable BPDU Filtering.
Chapter S Commands
OL-27880-02