EDS-516A Series User’s Manual
Featured Functions
3-19
When the number of EDS-516A units in the Turbo Ring is even.
Master
If there are 2N EDS-516A units (an even
number) in the Turbo Ring, then the backup
segment is one of the two segments connected to
the (N+1)st EDS-516A (i.e., the EDS-516A unit
directly opposite the Master).
When the number of EDS-516A units in the Turbo Ring is odd.
Master
Segment N+1
If there are 2N+1 EDS-516A units (an odd
number) in the Turbo Ring, with EDS-516A
units and segments labeled counterclockwise,
then segment N+1 will serve as the backup path.
For the example shown here, N=1, and therefore
N+1=2.
For some systems, it may not be convenient to connect all devices in the system to make one BIG
redundant ring, since some devices could be located in a remote area. The “Ring Coupling”
function of Turbo Ring can help you separate those distributed devices into different smaller
redundant rings, but in such a way that they can still communicate with each other. The following
figure illustrates how to couple two Turbo Rings.
ATTENTION
In a VLAN environment, you must set “Redundant Port,” “Coupling Port,” and “Coupling
Control Port” as “Trunk Port,” since these ports act as the “backbone” to transmit all packets of
different VLANs to different EDS-516A units.
