PT-7728 User’s Manual Featured Functions
3-25
Note that the ring coupling settings for a Turbo Ring V2 are different from a Turbo 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 Turbo Ring V2 does not require a coupling control line.
The Coupling Port (Backup) on Switch A is used for the backup path and connects directly to a
network port on Switch C. The Coupling Port (Primary) on Switch B monitors the status of the
main path, and connects directly to an extra network port on Switch D. With ring coupling
established, Switch A can activate the backup path as soon as it detects a problem with the main
path.
ATTENTION
Ring coupling only needs to be enabled on one of the switches serving as the ring coupler. The
coupler must assign separate ports for the two Turbo Ring ports and the coupling port.
NOTE
You do not need to use the same PT series Ethernet switch for both ring coupling and ring
master.
Dual-Homing Configuration for Turbo Ring V2
Dual-homing is only supported with Turbo Ring V2 and is used to connect two networks through
a single Ethernet switch. The primary path is the operating connection, and the backup path is a
back-up connection that is activated in the event that the primary path connection fails.
Dual-Homing for Turbo Ring V2
Primary
Path
Ring A
Master
Master
Ring B
Backup
Path
Configuring Turbo Ring, Turbo Ring V2, and Turbo Chain
On the Communication Redundancy page, select Turbo Ring or Turbo Ring V2 or Turbo
Chain as the Redundancy Protocol. Note that each protocol's configuration page is different.
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