Milan Technology MIL-SM8002TG - Manual (Page 168)

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The system also supports the coupling ring that can connect 2 or more super ring group
for the redundant backup function.
Enable Super ring: to enable the super ring function.
Enable Ring Master: Enable means the switch is ring master. Disable means the
switch is slave.
1
st
& 2
nd
Ring Port: select two ports as the member ports. One port will be working
port and one port will be the backup port. The system will automatically decide which
port is working port and which port is backup port.
Enable Coupling Ring: to enable the coupling ring function.
Coupling port: select the member port.
Control port: select the switch as the master switch in the coupling ring.
Click Apply .
Super ring Interface
[NOTE] When you enable the super ring function, you must disable the RSTP. The super
ring function and RSTP function cannot exist at the same time.