GE MultiLink ML1200 Instruction Manual page 230

RAPID SPANNING TREE PROTOCOL
Note
13–22
Only 2 ports can be selected to Ring Only Mode.
Select the Enabled option for the Status setting as shown below:
Save the configuration by clicking on the
CHAPTER 13: RAPID SPANNING TREE PROTOCOL
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
icon.