D-Link DGS-1510 Series Reference Manual page 591

DGS-1510 Series Gigabit Ethernet SmartPro Switch CLI Reference Guide
65-12 spanning-tree portfast
This command is used to specify the port's fast mode. Use the no form of this command to revert to
the default setting.
spanning-tree portfast {disable | edge| network}
no spanning-tree portfast
Parameters
disable
edge
network
Default
By default, this option is edge.
Command Mode
Interface Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
A port can be in one of the following three port fast modes:

Edge mode - The port will directly change to the spanning-tree forwarding state when a link-
up occurs without waiting for the forward-time delay. If the interface receives a BPDU later, its
operation state changes to the non-port-fast state.

Disable mode - The port will always be in the non-port-fast state. It will always wait for the
forward-time delay to change to forwarding state.

Network mode - The port will remain in the non-port-fast state for three seconds. The port
will change to the port-fast state if no BPDU is received and changes to the forwarding state.
If the port received the BPDU later, it will change to the non-port-fast state
This command should be used with caution. Otherwise, an accidental topology loop and data-packet
loop may be generated and disrupt the network operation.
Example
This example shows how to configure port eth1/0/7 to the port-fast edge mode.
Switch# configure terminal
Switch(config)# interface eth1/0/7
Switch(config-if)# spanning-tree portfast edge
Switch(config-if)#
65-13 spanning-tree port-priority
This command is used to configure the value of the STP port priority on the specified port. It is only
used for RSTP and STP versions. Use the no form of this command to revert to the default setting.
spanning-tree port-priority PRIORITY
no spanning-tree port-priority
Parameters
Specifies to set the port to the port fast disabled mode.
Specifies to set the port to the port fast edge mode.
Specifies to set the port to the port fast network mode.
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