Siemens X-400 - Manual (Page 19)

Introduction to Industrial Ethernet Switches
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
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1.2.4 Redundant Linking of Network Segments
The example of redundant linking of two network segments as shown here is pos-
sible only when linking between X414 because the standby function of the X414 is
required.
RM
RM
S7-200
S7-300
S7-400
SCALANCE
X-414-3E
SCALANCE
X-414-3E
SCALANCE
X-414-3E
Mbit/s
10/100
SCALANCE X414-3E SCALANCE X414-3E
1000
Mbit/s
1000
Mbit/s
Figure 1-6 Redundant linking of two subnets
In this case, network segments are rings with a redundancy manager (RM). The
rings can also be interrupted at one point (linear topology).
For a redundant link as shown in the figure, two devices must be configured within
a network segment. This configuration is set in Web Based Management, Com-
mand Line Interface or using SNMP access. For more detailed information, refer to
the Configuration Manual SCALANCE X-400 Industrial Ethernet Switches.