Hirschmann MACH 1040 Series, User Manual, Page: 13 / 78

Ring Redundancy
Redundancy L2B
Release 6.0 07/2010
1.2 Overview of
Redundancy Protocols
13
2 Ring Redundancy
The concept of ring redundancy allows the construction of high-availability,
ring-shaped network structures.
With the help of the RM (
R ing M anager) function, the two ends of a backbone
in a line structure can be closed to a redundant ring. The ring manager keeps
the redundant line open as long as the line structure is intact. If a segment
becomes inoperable, the ring manager immediately closes the redundant
line, and line structure is intact again.
Figure 1: Line structure
Figure 2: Redundant ring structure
RM = Ring Manager
—— main line
- - - redundant line
RM