772 | Rapid Spanning Tree Protocol (RSTP)
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Enable Rapid Spanning Tree Protocol Globally
Rapid Spanning Tree Protocol must be enabled globally on all participating bridges; it is not enabled by
default.
To enable Rapid Spanning Tree globally for all Layer 2 interfaces:
Verify that Rapid Spanning Tree is enabled using the
show config command from PROTOCOL
SPANNING TREE RSTP mode.
Figure 38-3. Verifying RSTP is Enabled
When you enable Rapid Spanning Tree, all physical and port-channel interfaces that are enabled and in
Layer 2 mode are automatically part of the RST topology.
• Only one path from any bridge to any other bridge is enabled.
• Bridges block a redundant path by disabling one of the link ports.
Step Task Command Syntax Command Mode
1 Enter the PROTOCOL SPANNING TREE RSTP
mode.
protocol spanning-tree rstp CONFIGURATION
2 Enable Rapid Spanning Tree. no disable PROTOCOL
SPANNING TREE
RSTP
Note: To disable RSTP globally for all Layer 2 interfaces, enter the disable command from PROTOCOL
SPANNING TREE RSTP mode.
FTOS(conf-rstp)#show config
!
protocol spanning-tree rstp
no disable
FTOS(conf-rstp)#
Indicates that Rapid Spanning Tree is enabled
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