Siemens SCALANCE X-200 Specifications download pdf (Page 13)

Description

2.1 Basic information on Ethernet switching

SCALANCE X-300

Operating Instructions, 01, A5E01113043

S7-200

S7-300

S7-400

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Figure 2-5 Redundant coupling of two subnets in mixed operation with SCALANCE X310

and SCALANCE X308-2

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 IE Switches X-300 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

IE Switches X-300 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.

Note

If IE Switches X-300 or SCALANCE X408-2 devices are used exclusively for redundant

coupling of the gigabit rings, the coupling links can also be designed with a gigabit

transmission rate.

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Siemens SCALANCE X-200 Specifications Page 13