User`s manual

EDS-828 Series Featured Functions
3-21
Determining the Redundant Path of a “Turbo Ring” Ring
In this case, the redundant segment (i.e., the segment that will be blocked during normal operation) is
determined by the number of EDS-828 units that make up the ring, and where the ring master is located.
“Turbo Ring” rings with an even number of EDS-828 units.
If there are 2N EDS-828 units (an even number) in the
“Turbo Ring” ring, then the backup segment is one of
the two segments connected to the (N+1)st EDS-828
(i.e., the EDS-828 unit directly opposite the master).
“Turbo Ring” rings with an odd number of EDS-828 units.
If there are 2N+1 EDS-828 units (an odd number) in the
“Turbo Ring” ring, with EDS-828 units and segments
labeled counterclockwise, then segment N+1 will serve
as the backup path.
For the example shown here, N=1, so that N+1=2.
Determining the Redundant Path of a “Turbo Ring V2” Ring.
For a “Turbo Ring V2” ring, the backup segment is the
segment connected to the 2nd redundant port on the
master.
See Configuring “Turbo Ring V2” in the Configuring
“Turbo Ring” and “Turbo Ring V2” section below.
Ring Coupling Configuration
For some systems, it may not be convenient to connect all devices in the system to create one BIG redundant
ring, since some devices could be located in a remote area. For these systems, “Ring Coupling” can be used to
separate the devices into different smaller redundant rings, but in such a way that they can still communicate
with each other.