Mrp; Mrp - Media Redundancy Protocol - Siemens SCALANCE XB-200 Configuration Manual

4.4.3

MRP

4.4.3.1

MRP - Media Redundancy Protocol

The "MRP" method conforms to the Media Redundancy Protocol (MRP) specified in the
following standard:
IEC 62439-2 Release 1.0 (2010-02) Industrial communication networks - High availability
automation networks Part 2: Media Redundancy Protocol (MRP)
The reconfiguration time after an interruption of the ring is a maximum of 200 ms.
Topology
The following figure shows a possible topology for devices in a ring with MRP.
Figure 4-1 Example of a ring topology with the MRP media redundancy protocol
The following rules apply to a ring topology with media redundancy using MRP:
● All the devices connected within the ring topology are members of the same redundancy
domain.
● One device in the ring is acting as redundancy manager.
● All other devices in the ring are redundancy clients.
Non MRP-compliant devices can be connected to the ring via a SCALANCE X switch or via
a PC with a CP capable of MRP.
SCALANCE XB-200/XC-200/XP-200 Web Based Management
Configuration Manual, 07/2016, C79000-G8976-C360-04
Technical basics
4.4 Redundancy mechanism
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