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EDS-726 Series User’s Manual Featured Functions
3-20
NOTE
Port trunking and Turbo Ring can be enabled simultaneously to form a backbone. Doing so will
increase the bandwidth of the backbone, and also provide redundancy. For example, suppose that
two physical ports, 1 and 2, are trunked to form trunk group Trk1, and then Trk1 is set as one
Turbo Ring path. If port 1 gets disconnected, the remaining trunked port, port 2, will share the
traffic. If port 1 and port 2 are both disconnected, Turbo Ring will create the back up path within
300 ms.
The Turbo Ring Concept
The proprietary Turbo Ring protocol was developed by Moxa to optimize communication
redundancy and achieve a faster recovery time on the network.
Turbo Ring protocol identifies one switch as the “master” of the network, and then automatically
blocks packets from traveling through any of the network’s redundant loops. In the event that one
branch of this ring gets disconnected from the rest of the network, the Turbo Ring protocol
automatically readjusts the ring (if possible) so that the part of the network that was disconnected
reestablishes contact with the rest of the network.
Initial Setup
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
34
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
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
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
1. Select any two ports as redundant ports.
2. Connect the redundant ports to form the
Turbo Ring
You do not need to set the Master to use Turbo Ring. Master is only needed to identify which
segment acts as the backup path. The actual topology of the redundant ring, i.e., which segment
will be blocked, is determined by the number of EDS-726 switches that make up the ring, and
where the “Ring Master” is located.