Introduction
10
1.1
Overview of Redundancy Procedure
Redundanz L2P
Release
5.0
04/09
1.1 Overview of
Redundancy Procedure
Note: Informations concerning the switching time you can find on the
Hirschmann internet site (www.hirschmann-ac.com) at the end of the product
site.
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 81).
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 81).
Fast HIPER-
Ring (RSR20,
RSR30 and
MACH 1000)
Ring < 10 ms with 5 devices in ring.
With more than 5 devices, the switching time increases.
Sub-Ring
(RSR20,
RSR30 and
MACH 1000)
Ring segment
coupled to basis ring
typically 80 ms, up to < 500 ms - practically indepen-
dently of the number of devices
Redundant
coupling
Coupling of network
segment/rings via a
main line and a
redundant line
typically 150 ms, up to < 500ms
Link
Aggregation
Coupling of network
segments via parallel
active lines with
dynamic load distri-
bution and line
redundancy
Table 1: Comparison of the redundancy procedures