Pilz PSSnet SHL 8T MRP - Manual (Page 10)

Introduction
10
1.1 Overview of
Redundancy Procedure
PSSnet SHL - Redundancy Configuration
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1.1 Overview of
Redundancy Procedure
Redundancy
procedure Network topology Switching time
RSTP Random structure typically < 1 s (STP < 30 s), up to < 30 s - depends
heavily on the number of devices
Note: Up to 79 devices possible, depending on topology and configuration. If
the default values are being used, up to 39 devices are possible, depending on
the topology
(see page 53) .
HIPER-Ring Ring typically 80 ms, up to < 500 ms - practically indepen-
dently of the number of devices
MRP-Ring Ring typically 80 ms, up to < 500 ms - practically indepen-
dently of the number of devices
Note: In combination with RSTP in MRP compatibility mode, up to 39 devices
are possible, depending on the configuration. If the default values for RSTP are
being used, up to 19 devices are possible
(see page 53) .
Redundant
coupling Coupling of network
segment/rings via a
main line and a
redundant line typically 150 ms, up to < 500ms
Table 1: Comparison of the redundancy procedures