Moxa EDS-82810G [35/113] Attention

EDS-828 Series Featured Functions

3-22

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.

ATTENTION

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

-828 units.

Ring Coupling for a “Turbo Ring” Ring.

To configure the Ring Coupling function for a “Turbo Ring” ring, select two EDS-828 units (e.g., Switch A and

B in the above figure) in the ring, and another two EDS-828 units in the adjacent ring (e.g., Switch C and D).

Decide which two ports in each switch are appropriate to be used as coupling ports, and then link them together.

Next, assign one switch (e.g., Switch A) to be the “coupler,” and connect the coupler’s coupling control port

with Switch B (for this example). The coupler switch (i.e., Switch A) will monitor switch B through the coupling

control port to determine whether or not the coupling port’s backup path should be recovered.

Ring Coupling for a “Turbo Ring V2” Ring.

Note that the ring coupling settings for a “Turbo Ring V2” ring are different from a “Turbo Ring” ring. For Turbo

Ring V2, Ring Coupling is enabled by configuring the “Coupling Port (Primary)” on Switch B, and the “Coupling

Port (Backup)” on Switch A only. You do not need to set up a coupling control port, so that a “Turbo Ring V2”

ring does not use a coupling control line.