Network topologies
3.4 Redundant coupling of network segments
SCALANCE X-300
Operating Instructions, 05/2016, A5E01113043-20
45
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. Reconfiguration takes place within 0.3 s.
Switches X-300 or SCALANCE X408-2 devices are used exclusively for redundant
rings, the coupling links can also be designed with a gigabit