Ring Redundancy - Hirschmann RS20 User Manual

Ring Redundancy

2 Ring Redundancy
The concept of ring redundancy allows the construction of high-availability,
ring-shaped network structures.
With the help of the RM (Ring Manager) 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
RM
Figure 2: Redundant ring structure
RM = Ring Manager
—— main line
- - - redundant line
Redundancy L2B
Release 6.0 07/2010
1.2 Overview of
Redundancy Protocols
13