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EDS-726 Series User’s Manual Featured Functions
3-21
When the number of EDS-726 units in the Turbo Ring is even.
Master
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
34
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
3 4
TX
RX
12
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
34
TX
RX
12
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
34
TX
RX
12
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
34
TX
RX
12
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
34
TX
RX
12
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
34
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
If there are 2N EDS-726 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-726 (i.e., the EDS-726 unit directly
opposite the Master).
When the number of EDS-726 units in the Turbo Ring is odd.
Master
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
3 4
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
3 4
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
3 4
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
3 4
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
EDS-726
EtherDevice Switch
34
IM-4TX
12
PWR
P3
P1
P4
P2
IM-4MST
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-4MSC
TX
RX
3 4
TX
RX
1 2
PWR
P3
P1
P4
P2
IM-2MST/2TX
TX
RX
3 4
12
PWR
P3
P1
P4
P2
IM-2MSC/2TX
TX
RX
3 4
12
PWR
P3
P1
P4
P2
IM-1LSC/3TX
4
12
3
TX
RX
PWR
P3
P1
P4
P2
COUPLER CF
STAT
PWR1 FAULT
MASTER
PWR2
IM-1GSXSCIM-1GTX
MODE
RING
PORT
COUPLER
PORT
FDX/HDX
LNK/ACT
SPEED
Segment N+1
If there are 2N+1 EDS-726 units (an odd
number) in the Turbo Ring, with EDS-726 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 figure
below 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-726 units.