American Fibertek SM10p-PoE - Manual (Page 99)

Once its forwarding port fails, the system will automatically upgrade its blocking port
to be the forwarding port of the Ring Master switch.
¢ Enable Coupling Ring: Enable the coupling ring function. Mark the check box to
enable the coupling ring function.
¢ Coupling port: Assign the member port which is connected to the other ring group.
¢ Control port: When Couple Ring check box is marked, you have to assign
the control port to form a couple-ring group between the two X-rings.
¢ Enable Dual Homing: Set up one of the ports on the switch to be the Dual Homing
port. For a switch, there is only one Dual Homing port. Dual Homing function only
works when the X-Ring function enabled.
¢ And then, click Apply to apply the configuration.
X-ring Interface
Note When the X-Ring function enable, user must disable the RSTP. The X-Ring
function and RSTP function cannot exist in a switch at the same time.
Remember to execute the ‘Save Configuration’ action, otherwise the new
configuration will lose when switch power off.
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