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1.5.1
Parallel Redundancy Protocol
Parallel Redundancy Protocol (PRP) provides hitless network recovery by replicating
information over two physically independent Ethernet networks. The following
illustrates a typical PRP network:
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2
3
4
5
6
7
Figure 1.3
Note
PRP expands the Ethernet frame by 6 octets due to RCT (Redundancy Check Trailer).
Generation of PRP supervision frames also consumes bandwidth. As a result, the
network designer should keep in mind the overhead introduced by the PRP network
when calculating the network capacity.
RUGGEDCOM RS950G
Equipment Manual, 10/2023, C79000-G8976-1037-08
1
2
Sending IED
RUGGEDCOM RS950G
Network A
Network B
RS900
IED
Receiving IED
PRP Network Design
1.5.1 Parallel Redundancy Protocol
3
4
Introduction
5
6
2
7
5
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