SMC Networks TigerSwitch 100 - Manual (Page 250)

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spanning-tree
Use this command to enable the Spanning Tree Protocol globally for this
switch. Use the no form to disable it.
Syntax
spanning-tree
no spanning-tree
Default Setting
Spanning Tree is enabled.
Command Mode
Global Configuration
Command Usage
The Spanning Tree Protocol can be used to detect and disable network
loops, and to provide backup links between switches, bridges or
routers. This allows the switch to interact with other bridging devices
(that is, an STP-compliant switch, bridge or router) in your network to
ensure that only one route exists between any two stations on the
network, and provide backup links which automatically take over when
a primary link goes down.
Example
The following example enables the Spanning Tree Protocol for this switch:
Console(config)#spanning-tree
Console(config)#