Reference Guide

Figure 122. Spanning Tree Enabled Globally
To enable STP globally, use the following commands.
1. Enter PROTOCOL SPANNING TREE mode.
CONFIGURATION mode
protocol spanning-tree 0
2. Enable STP.
PROTOCOL SPANNING TREE mode
no disable
To disable STP globally for all Layer 2 interfaces, use the disable command from PROTOCOL SPANNING TREE mode.
To verify that STP is enabled, use the show config command from PROTOCOL SPANNING TREE mode.
Example of Verifying Spanning Tree is Enabled
FTOS(conf)#protocol spanning-tree 0
FTOS(config-span)#show config
!
protocol spanning-tree 0
no disable
FTOS#
To view the spanning tree configuration and the interfaces that are participating in STP, use the show spanning-
tree 0 command from EXEC privilege mode. If a physical interface is part of a port channel, only the port channel is
listed in the command output.
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