Siemens SCALANCE X-400 User Manual

Description
3.2 Network topologies
SCALANCE X-400
Operating Instructions, 06/2015, C79000-G8976-C186-12
25
3.2.6
Redundant coupling of network segments
Redundant coupling of network segments
The example of the redundant linking of two network segments shown here, for example
rings with redundancy manager (HRP only), can be implemented homogeneously with
SCALANCE X414-3E or SCALANCE X408-2 or mixed with SCALANCE X414-3E and
SACLANCE X408-2. Reconfiguration time 300 ms.
Figure 3-7 Redundant coupling of two subnets in mixed operation with SCALANCE X414-3E and
SCALANCE X408-2
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, Command Line Interface or
using SNMP access. For more detailed information, refer to the configuration manual
"SCALANCE X-300 and SCALANCE X-400 Industrial Ethernet Switches". The two devices
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

Siemens SCALANCE X-400 Specifications

General

Brand	Siemens
Model	SCALANCE X-400
Category	Switch
Language	English