Hirschmann RS20 Programming Manual page 110

Rapid Spanning Tree
Activate RSTP at the ports here using S1 as an example.
enable
configure
interface 1/1
spanning-tree port mode
exit
interface 1/2
spanning-tree port mode
exit
interface 1/3
spanning-tree port mode
exit
Configure globally here using S1 as an example:
– the RSTP priority
– global operation
– the MRP compatibility mode
spanning-tree mst priority 0
4096
spanning-tree
spanning-tree stp-mrp-mode
Configure all the participating devices in accordance with the table.
Connect the redundant RSTP connection.
110
6.7 Combination of RSTP and MRP
Switch to the Privileged EXEC mode.
Switch to the Configuration mode.
Switch to the Interface Configuration mode of
interface 1/1.
Activate RSTP at port.
Switch to the Configuration mode.
Switch to the interface configuration mode for
port 1.2.
Activate RSTP at port.
Switch to the Configuration mode.
Switch to the interface configuration mode for
port 1.3.
Activate RSTP at port.
Switch to the Configuration mode.
Set the RSTP priority to the value 4096.
Activate RSTP operation globally.
Activate MRP compatibility.
Redundanz L2P
Release 5.0 04/09