Spanning-Tree Commands 353
User Guidelines
• There are no user guidelines for this command.
Example
The following example configures the spanning priority on g5 to 96.
spanning-tree portfast
The spanning-tree portfast Interface Configuration mode command enables PortFast mode. In PortFast
mode, the interface is immediately put into the forwarding state upon linkup, without waiting for the
timer to expire. Use the no form of this command to disable PortFast mode.
Syntax
• spanning-tree portfast
• no spanning-tree portfast
Default Configuration
PortFast mode is disabled.
Command Modes
Interface Configuration (Ethernet, port-channel) mode.
User Guidelines
• This feature should 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.
Example
The following example enables PortFast on g5.
Console(config)# interface ethernet g5
Console(config-if)# spanning-tree port-priority 96
Console(config)# interface ethernet g5
Console(config-if)# spanning-tree portfast
5400_CLI.book Page 353 Wednesday, December 17, 2008 4:33 PM