User Documentation

User Manual Managed Switches
62
3.5.2.2 Ring Coupling Configuration
In some applicaions it may not be convenient to connect all devices in the system to form one large
redundant ring, though some devices are 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 switches.
Ring coupling based on protocol Turbo Ring (V1, original version)
Ring Coupling for a "Turbo Ring (V1)"
Switch B
Switch D
Main Path
Coupling Port
Switch A: „Coupler“
Switch C
Backup Path
Coupling
Control Port
To configure the Ring Coupling function for a “Turbo Ring”, select two switches (e.g., Switch A and B
in the above figure) in the ring, and another two switches 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 based on protocol Turbo Ring V2 (new version)
Ring Coupling for a "Turbo Ring V2"
Switch B
Switch D
Coupling Port (Primary)
Main Path
Coupling Port (Backup)
Switch A Switch C
Backup Path