PLANET ISW-1022MPT - Manual (Page 116)

User’s Manual of ISW-1022M Series and ISW-1033MT
5.6.6.2 Coupling Ring Application
In the network, it may have more than one X-Ring group. By using the coupling ring function, it can connect each X-Ring
for the redundant backup. It can ensure the transmissions between two ring groups not to fail. The following figure is a
sample of coupling ring application.
Figure 5-60 Coupling Ring Application
5.6.6.3 Dual Homing Application
Dual Homing function is to prevent the connection lose from 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.
Figure 5-61 Dual Homing Ring Application
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