Allied Telesis AT-S63 - Manual (Page 246)

Chapter 16: Rapid Spanning Tree Protocols Commands
246 Section III: Spanning Tree Protocols
ACTIVATE RSTP
Syntax
activate rstp
Parameters
None.
Description
This command designates RSTP as the active spanning tree on the stack.
After selecting RSTP as the active spanning tree, you can enable or
disable it with the ENABLE RSTP and DISABLE RSTP commands. RSTP
is active on a stack only after you have designated it as the active
spanning tree with this command and enabled it with the ENABLE RSTP
command.
Only one spanning tree protocol, STP, RSTP, or MSTP, can be active on
the stack at a time.
Example
activate rstp