Technical basics
4.4 Redundancy mechanism
SCALANCE XB-200 Web Based Management
30 Configuration Manual, 04/2015, C79000-G8976-C360-02
Figure 4-2 Example of a redundant link between rings
For a redundant link as shown in the figure, two devices must be configured as standby
redundancy switches within a network segment. In this case, network segments are rings
with a redundancy manager. Instead of rings, network segments might also be linear.
The two standby redundancy switches connected in the configuration exchange data frames
with each other to synchronize their operating statuses (one device is master and the other
slave). If there are no problems, only the link from the master to the other network segment
is active. If this link fails (for example due to a link-down or a device failure), the slave
activates its link as long as the problem persists.
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