Spanning-Tree Portfast - Allied Telesis SwitchBlade x908 Series Software Reference Manual

Spanning Tree Commands

spanning-tree portfast

Use this command to set a port as an edge-port. The portfast feature enables a port to rapidly
move the forwarding state, without having first to pass through the intermediate spanning tree
states. This command has the same effect as the
command, but the configuration displays differently in the output of some show commands.
Note:
You can obtain the same effect by running the
command. However, the configuration output may display differently in some show commands.
Use the no parameter with this command to set a port to its default state (not an edge-port).
Syntax
spanning-tree portfast
no spanning-tree portfast
Interface Mode
Mode
Not an edge port.
Default
Use this command on a switch port that connects to a LAN with no other bridges attached. An
Usage
edge port should never receive BPDUs. therefore if an edge port receives a BPDU, the portfast
feature takes one of three actions.
■
■
■
Example
awplus(config-if)#
spanning-tree edgeport (RSTP and MSTP)
Related Commands
show spanning-tree
spanning-tree portfast bpdu-filter
spanning-tree portfast bpdu-guard
19.40
You can run either of two additional parameters with this command. To simplify the
syntax these are documented as separate commands. See the following additional
portfast commands:
spanning-tree portfast bpdu-filter command on page 19.41
spanning-tree portfast bpdu-guard command on page
Cease to act as an edge port and pass BPDUs as a member of a spanning tree network.
Filter out the BPDUs and pass only the data and continue to act as a edge port
(spanning-tree portfast bpdu-guard
Block the port to all BPDUs and data
enabled).
awplus# configure terminal
awplus(config)# interface port1.1.2
spanning-tree portfast bpdu-filter
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
spanning-tree edgeport (RSTP and MSTP)
19.42.
spanning-tree edgeport (RSTP and MSTP)
command enabled)
(spanning-tree portfast bpdu-guard
and,
command
C613-50007-01 REV B