Coupling Ring Application. Advantech EKI-7559MI, EKI-7559SI

2.7 Coupling Ring Application

As the illustration shown below, users can use the X-Ring groups to form a coupling ring for redundant backup. It can ensure the transmissions between X-Ring groups not to fail. The following figure is a sample of coupling ring application.

Note The Ethernet switches with firmware version before v3.0 use the X-Ring function that has the limitations as follows. However, the ones with firmware version after v3.0 (included) use the X-Ring Pro function that gets rid of the limitations.

1. To ensure the coupling ring to work normally, the connection between control ports of each X-ring group, as the figure illustrated above, should always be active.

2. The switches to be configured as members of the Coupling Ring group cannot be the X-Ring Master device of their X-ring group.

3. As the figure illustrated above, Coupling Ring only supports two X-ring groups.

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