Spanning-Tree Portfast - Dell PowerEdge M420 Reference Manual

Parameter Description
Parameter
instance-id
priority
Default Configuration
The default bridge priority for IEEE STP is 32768.
Command Mode
Global Configuration mode
User Guidelines
The priority value must be a multiple of 4096. The priority will be set to the
nearest multiple of 4096 if not an exact multiple of 4096.
The switch with the lowest priority is selected as the root of the spanning tree.
Example
The following example configures the spanning tree priority of instance 1 to
4096.
console(config)#spanning-tree mst 1 priority 4096

spanning-tree portfast

Use the spanning-tree portfast command in Interface Configuration mode to
enable PortFast mode. In PortFast mode, the interface is immediately put
into the forwarding state upon linkup, without waiting for the timer to expire.
To disable PortFast mode, use the no form of this command.
Syntax
spanning-tree portfast
no spanning-tree portfast
702
Spanning Tree Commands
Description
ID of the spanning-tree instance. (Range: 1-4094)
Sets the switch priority for the specified spanning-tree instance.
This setting affects the likelihood that the switch is selected as
the root switch. A lower value increases the probability that the
switch is selected as the root switch. (Range: 0-61440)