Cisco Systems N3KC3064TFAL3 Verifying STP Extension Configuration, guard loop root none, Step

Configuring STP Extensions

Verifying STP Extension Configuration

Before You Begin

Ensure that STP is configured.

Ensure that you are configuring Loop Guard on spanning tree normal or network ports.

Procedure

	Command or Action	Purpose
Step 1	switch# configure terminal	Enters configuration mode.
Step 2	switch(config)# interface type	Specifies the interface to configure, and enters the interface
	slot/port	configuration mode.
Step 3	switch(config-if)# spanning-tree	Enables or disables either Loop Guard or Root Guard for
	guard {loop root none}	the specified interface. By default, Root Guard is disabled
		by default, and Loop Guard on specified ports is also
		disabled.
		Note	Loop Guard runs only on spanning tree normal
			and network interfaces.

This example shows how to enable Root Guard on Ethernet port 1/4:

switch# configure terminal

switch (config)# interface ethernet 1/4 switch(config-if)#spanning-tree guard root

Verifying STP Extension Configuration

To display the configuration information for the STP extensions, perform one of the following tasks:

Command	Purpose
switch# show running-config spanning-tree [all]	Displays the current status of spanning tree on the
	switch
switch# show spanning-tree [options]	Displays selected detailed information for the current
	spanning tree configuration.

Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)

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