Enabling Spanning Tree Protocol Globally - Dell Force10 C150 Configuration Manual

Enabling Spanning Tree Protocol Globally

Spanning Tree Protocol must be enabled globally; it is not enabled by default.
To enable Spanning Tree globally for all Layer 2 interfaces:
Step Task
1 Enter the PROTOCOL SPANNING TREE mode.
2 Enable Spanning Tree.
Note: To disable STP globally for all Layer 2 interfaces, enter the
SPANNING TREE mode.
Verify that Spanning Tree is enabled using the
TREE mode.
Figure 52-3. Verifying STP is Enabled
FTOS(conf)#protocol spanning-tree 0
FTOS(config-span)#show config
!
protocol spanning-tree 0
no disable
FTOS#
When you enable Spanning Tree, all physical, VLAN, and port-channel interfaces that are enabled and in
Layer 2 mode are automatically part of the Spanning Tree topology.
• Only one path from any bridge to any other bridge participating in STP is enabled.
• Bridges block a redundant path by disabling one of the link ports.
1052 | Spanning Tree Protocol
Command Syntax
protocol spanning-tree 0
no disable
show config
Indicates that Spanning Tree is enabled
Command Mode
CONFIGURATION
PROTOCOL
SPANNING TREE
command from PROTOCOL
disable
command from PROTOCOL SPANNING