9 spanning-tree portfast

spanning-tree portfast

Enables the Port Fast feature on an interface to allow the interface to quickly transition to forwarding state.

Synopsis

spanning-tree portfast [bpdu-filter bpdu-guard]

Operands

bpdu-filter

Sets the Port Fast BPDU filter for the port.

 

bpdu-guard

Guards the port against the reception of BPDUs.

Defaults

Port Fast is disabled.

 

Command

Interface configuration mode

Modes

 

 

Description

Use this command to enable the Port Fast feature. This command is is the only for the STP. Port

 

Fast immediately puts the interface into the forwarding state without having to wait for the

 

standard forward time. Use the spanning-tree edgeport command for MSTP and RSTP.

Usage

If you enable portfast bpdu-guardon an interface and the interface receives a BPDU, the software

Guidelines

disables the interface and puts the interface in the ERR_DISABLE state.

Examples

To enable a port to quickly transition to the forwarding state:

 

switch(conf-if-te-0/1)#spanning-tree portfast

 

To set the Port Fast BPDU filter for the port:

 

switch(conf-if-te-0/1)#spanning-tree portfast bpdu-filter

 

To guard the port against the reception of BPDUs:

 

switch(conf-if-te-0/1)#spanning-tree portfast bpdu-guard

See Also

spanning-tree portfast bpdu-guard,spanning-tree autoedge

158

Converged Enhanced Ethernet Command Reference

 

53-1001762-01

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Brocade Communications Systems 53-1001762-01 manual Spanning-tree portfast, To set the Port Fast Bpdu filter for the port
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