Siemens SCALANCE X-300 Series User Manual

The redundancy manager function is enabled by the SELECT/SET button or by a setting in the
software. For more detailed information, refer to the configuration manual "SCALANCE X‑300
and SCALANCE X-400 Industrial Ethernet Switches".
In contrast to the ring ports of the redundancy clients, the ring ports of the redundancy manager
are disconnected when the network is operating problem-free. The IE Switch X-300 operating
in the role of redundancy manager mode monitors the connected bus over its ring ports and
switches the ring ports through if there is an interruption on the connected bus; in other words,
it restores a functioning bus over this substitute path. Reconfiguration is achieved within 0.3 s.
As soon as the problem is eliminated, the original topology is restored; in other words, the ring
ports in the redundancy manager are disconnected from each other again.
In a ring with media redundancy, only one device can operate as the redundancy manager.
Ring ports
An electrical ring with redundancy manager can be set up via the RJ-45 connectors that allow
attachment of electrical (twisted pair) connections (10, 100 and/or 1000 Mbps). The
SCALANCE X310FE is an exception to this. This device only allows attachment of electrical
(twisted-pair) connections at 10 or 100 Mbps.
The use of the IE Switch X-300 in an optical ring (1000 Mbps, with SCALANCE X-300EEC
100Mbps) with a redundancy manager is also possible with the exception of the devices
SCALANCE X310 and SCALANCE X310FE.
You can configure which ports take on the function of ring ports individually. The following table
shows the factory defaults for the ring ports.
Device Factory setting for the ring ports
Electrical Optical
X-304-2FE Port 1 and port 2
X306-1LD FE Port 2 and port 3
X307-3 Port 9 and port 10
X307-3LD Port 9 and port 10
X308-2 Port 9 and port 10
X308-2LD Port 9 and port 10
X308-2LH Port 9 and port 10
X308-2LH+ Port 9 and port 10
X310 Port 9 and port 10 (no optical ports)
X310FE Port 9 and port 10 (no optical ports)
X320-1FE Port 1 and port 2
X320-3LD FE Port 1 and port 2
X308-2M Port 1 and port 2
X308-2M TS Port 1 and port 2
X308-2M PoE Port 1 and port 2
X302-7 EEC Port 8 and port 9
X307-2 EEC Port 8 and port 9
XR324-12M Port 1.1 and port 1.2
XR324-12M TS Port 1.1 and port 1.2
Network topologies
3.4 Ring with redundancy manager
SCALANCE X-300
Operating Instructions, 11/2019, A5E01113043-24 25

Siemens SCALANCE X-300 Series Specifications

General

Brand	Siemens
Model	SCALANCE X-300 Series
Category	Switch
Language	English