Cisco Systems 3750E manual Displaying the Spanning-Tree Status, 20-19

Chapter 20 Configuring Optional Spanning-Tree Features

Displaying the Spanning-Tree Status

	Command	Purpose
Step 3
	spanning-tree loopguard default	Enable loop guard.
		By default, loop guard is disabled.
Step 4
	end	Return to privileged EXEC mode.
Step 5
	show running-config	Verify your entries.
Step 6
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

To globally disable loop guard, use the no spanning-tree loopguard default global configuration command. You can override the setting of the no spanning-tree loopguard default global configuration command by using the spanning-tree guard loop interface configuration command.

Displaying the Spanning-Tree Status

To display the spanning-tree status, use one or more of the privileged EXEC commands in Table 20-2:

Table 20-2	Commands for Displaying the Spanning-Tree Status
Command		Purpose
show spanning-tree active		Displays spanning-tree information on active interfaces only.
show spanning-tree detail		Displays a detailed summary of interface information.
show spanning-tree interface interface-id		Displays spanning-tree information for the specified interface.
show spanning-tree mst interface interface-id		Displays MST information for the specified interface.
show spanning-tree summary [totals]		Displays a summary of interface states or displays the total lines of the
		spanning-tree state section.

You can clear spanning-tree counters by using the clear spanning-tree[interface interface-id] privileged EXEC command.

For information about other keywords for the show spanning-treeprivileged EXEC command, see the command reference for this release.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02		20-19