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To enable bridge protocol data unit (BPDU) Guard by default on all spanning tree edge ports, use the spanning-tree port type edge bpduguard default command. To disable BPDU Guard on all edge ports by default, 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	Modification
4.0(0)N1(1a)	This command was introduced.

Usage Guidelines

To enable BPDU Guard by default, you must do the following:

Configure the interface as spanning tree edge ports by entering the spanning-tree port type edge or the spanning-tree port type edge default command.
Enable BPDU Guard.

Use this command to enable BPDU Guard globally on all spanning tree edge ports. BPDU Guard disables a port if it receives a BPDU.

Global BPDU Guard is applied only on spanning tree edge ports.

You can also enable BPDU Guard per interface; see the spanning-tree bpduguard command for more information.

Note We recommend that you enable BPDU Guard on all spanning tree edge ports.

Examples

This example shows how to enable BPDU Guard by default on all spanning tree edge ports:

switch(config)# spanning-tree port type edge bpduguard default

Related Commands

Command	Description
show spanning-tree summary	Displays the information about the spanning tree configuration.
spanning-tree bpduguard	Enables BPDU guard on the interface.
spanning-tree port type edge	Configures an interface as a spanning tree edge port.