
Operating Manual
MAN_EL-1000-4GM
Version:
2.6.1
/ 01.02.2021
Authorized by:
T.W.
Page 48 of 77
5.7
Redundancy
The redundancy screen offers an overview of the available redundancy protocols and their status. It
isn't possible to activate multiple redundancy protocols at the same time, which is why only one may
possess active status. The edit button can be used to access the protocols, where the configuration
can be made.
The following protocols are available:
MRP: Media Redundancy Protocol
RSTP: Rapid Spanning Tree Protocol
Use of the redundancy protocols guarantees your network increased failure security and availability
in case of faults.
5.7.1
Media Redundancy Protocol (MRP)
The Media Redundancy Protocol (Figure 15) is a ring protocol for highly available networks. The MRP
switches form a ring via the two respective dedicated ports. Exactly one switch in the ring is
configured as a redundancy manager. This redundancy manager uses special test packets to test the
flow capacity of the ring and completes a redundant connection if the ring is interrupted by a fault.
The guaranteed reconfiguration time for up to 50 devices in the ring amounts to 200 ms. In a typical
application, the reconfiguration time normally amounts to less than 50 ms.
Attention! The ring may only physically be completed if MRP is configured completely.
Ring configuration