Redundant Coupling; The Variants Of Redundant Coupling - Hirschmann PowerMICE User Manual

Redundant coupling

4 Redundant coupling
4.1 The Variants of Redundant
Coupling
The control intelligence built into the Switch allows the redundant coupling of
HIPER-Rings and network segments.
Two rings/network segments are connected over two separate paths with
one of the following switches:
D
RS2-16M,
D
RS20, RS30, RS40
D
MICE (Rel. 3.0 or higher) or
D
PowerMICE
D
MS20, MS30
D
MACH 1000
D
MACH 3000 (ab Rel. 3.3)
D
MACH 4000.
The redundant coupling is effected by the one-switch coupling of two ports
of one switch in the first ring/network segment, to one port each of two
switches in the second ring/network segment
Immediately after the main line fails, the switch opens the redundant line.
When the main line is OK again, the main line is opened again and the re-
dundant line is re-blocked.
An error is detected and eliminated within 500 ms (typically 150 ms).
The redundant coupling is effected by the two-switch coupling of one port
each from two switches in the first ring/network segment, to one port each of
two switches in the second ring/network segment
The switch in the redundant line and the switch in the main line inform each
other about their operating states by using control frames via the Ethernet or
the control line.
Immediately after the main line fails, the redundant switch switches to the
redundant line. As soon as the main line is restored to normal operation,
the switch in the main line informs the redundant switch. The main line is
re-activated, and the redundant line is re-blocked.
An error is detected and eliminated within 500 ms (150 ms typically).
Redundancy L3P
Release 3.0 01/07

4.1 The Variants of Redundant Coupling

(see Fig.
(see Fig. 18)
12).
.
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