Spanning-Tree Portfast - Dell PowerConnect 8024 Cli Reference Manual

Command Mode
Global Configuration mode
User Guidelines
The priority value must be a 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
Default Configuration
PortFast mode is disabled.
Command Mode
Interface Configuration (Ethernet, Port-Channel) mode
User Guidelines
This feature is to be used only with interfaces connected to end stations. Otherwise, an
accidental topology loop could cause a data packet loop and disrupt switch and network
operations.
An interface with PortFast mode enabled is moved directly to the spanning tree forwarding state
when linkup occurs without waiting the standard forward-time delay.
Example
The following example enables PortFast on 1/g5
.
console(config)#interface ethernet 1/g5
479
Spanning Tree Commands