Allied Telesis AT-DC2552XS - Manual (Page 370)

Chapter 14: STP Commands
370 Section II: Layer 2 Switching
SPANNING-TREE MODE
Syntax
spanning-tree mode stp|rstp|mstp
Parameters
stp
Specifies STP (IEEE 802.1D).
rstp
Specifies RSTP (IEEE 802.1w). This is the default setting.
mstp
Specifies MSTP (IEEE 802.1s).
Mode
Global Configuration mode
Description
Use this command to designate STP, RSTP or MSTP as the active
Spanning Tree Protocol. When you change the active Spanning Tree
Protocol, the settings for the previously active Spanning Tree Protocol are
restored to their default values.
When the active Spanning Tree Protocol is specified on the switch, the
switch enables the specified STP version.
When the Spanning Tree Protocol and Router Redundancy Protocol
(RRP) Snooping cannot be enabled at the same time. Disable RRP when
you enable STP, RSTP, or MSTP on the switch.
Confirmation Command
“SHOW RUNNING-CONFIG” on page 116
Example
This example designates STP as the active spanning tree protocol on the
switch:
awplus> enable
awplus# configure terminal
awplus(config)# spanning-tree mode stp