Ring Coupling Configuration

EDS-408A/405A Series User’s Manual

Featured Functions

“Turbo Ring” rings with an odd number of EDS units

Master

If there are 2N+1 EDS units (an odd number) in the “Turbo Ring” ring, with EDS 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.

Segment N+1

Determining the Redundant Path of a “Turbo Ring V2” Ring

Master

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.

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

In a VLAN environment, the user must set “Redundant Port,” “Coupling Port,” and “Coupling Control Port” to join all VLANs, since these ports act as the “backbone” to transmit all packets of different VLANs to different EDS units.

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EDS-405A, EDS-408A specifications

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