GE MULTILINK ML2400 - Manual (Page 231)

CHAPTER 13: RAPID SPANNING TREE PROTOCOL RAPID SPANNING TREE PROTOCOL
MULTILINK ML2400 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 13–23
Z Select the Configuration > RSTP > RO Mode menu as shown below:
Z Click the Edit button to configure RO Mode.
Z Select the desired ports as shown below, then click OK to exit.
Note Only 2 ports can be selected to Ring Only Mode.