American Fibertek SM9p - Manual (Page 170)

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with lowest MAC address number as the ring master. The X-Ring master ring mode can
be enabled by setting the X-Ring configuration interface.
The system also supports the Couple Ring that can connect 2 or more X-Ring group for
the redundant backup function; Dual Homing function that can prevent connection lose
between X-Ring group and upper level/core switch. Apart from the advantages, Central
Ring can handle up to 4 rings in the system and has the ability to recover from failure
within 300 milliseconds.
 Enable Ring: To enable the X-Ring function, tick the checkbox beside the Enable
Ring string label. If this checkbox is not ticked, all the ring functions are unavailable.
 Enable Ring Master: Tick the checkbox to enable this switch to be the ring
master.
 1 st
& 2
nd
Ring Ports: Pull down the selection menu to assign the ports as the
member ports. 1
st
Ring Port is the working port and 2
nd
Ring Port is the backup
port. When 1
st
Ring Port fails, the system will automatically upgrade the 2
nd
Ring Port to be the working port.
 Enable Couple Ring: To enable the coupe ring function, tick the checkbox beside
the Enable Couple Ring string label.
 Couple Port: Assign the member port which is connected to the other ring
group.
 Control Port: When the Enable Couple Ring checkbox is ticked, 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.
 Homing Port: Assign a port which is used to be the dual homing port.
 And then, click Apply button to apply the configuration.