Specifications

Waters Network Systems GSM2109-1009-8PoE User’s Manual Page 21
Coupling Ring Application
There may be more than one X-ring group in the network. The Coupling Ring function
can connect each X-Ring for redundant backup. It ensures the transmission between
two ring groups, therefore reducing failure.
Figure 4.3 – Coupling Ring Application
Dual Homing Application
The Dual Homing function is used to prevent the connection loss from between X-ring
groups and upper level/core switches. Two ports are assigned as the Dual Homing port
that is used as a backup port in the X-ring group. The Dual Homing function is only
available when the X-ring function is active. Each X-ring group has only one Dual
Home port.
Note: When using the Dual Homing application, upper level switches must enable
RSTP protocol. The following illustrates the Dual Homing application: