Coupling Ring Application
In the network, it may have more than one X-Ring group. By using the coupling ring function can connect each X-Ring for the redundant backup. It can ensure the transmissions between two ring groups will no failure. The following figure is a sample of coupling ring application.
Dual Homing Application
Dual Homing function is to prevent a lost connection between X-Ring group and upper level/core switch. Assign two ports to be the Dual Homing port that is backup port in the X-Ring group. The Dual Homing function only works when the X-Ring function is active. Each X-Ring group only has one Dual Homing port.
[NOTE] In Dual Homing application architecture, the upper level switches need to enable the Rapid Spanning Tree protocol.
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