User`s manual

PT-G7509 User’s Manual Featured Functions
3-26
Ring Coupling for Turbo Ring V2
Switch B
Switch A
Switch D
Switch C
Main Path
Coupling Port (Primary)
Coupling Port (Backup)
Backup Path
STAT
FAULT
PWR1
MASTER
PWR2
COUPLER
LNK/ACT SPEED FDX/HDX
RING PORT
COMUPLER 
PORT
MODE
1 2 3 4 5 6 7 8 9
STAT
FAULT
PWR1
MASTER
PWR2
COUPLER
LNK/ACT SPEED FDX/HDX
RING PORT
COMUPLER 
PORT
MODE
1 2 3 4 5 6 7 8 9
STAT
FAULT
PWR1
MASTER
PWR2
COUPLER
LNK/ACT SPEED FDX/HDX
RING PORT
COMUPLER 
PORT
MODE
1 2 3 4 5 6 7 8 9
STAT
FAULT
PWR1
MASTER
PWR2
COUPLER
LNK/ACT SPEED FDX/HDX
RING PORT
COMUPLER 
PORT
MODE
1 2 3 4 5 6 7 8 9
STAT
FAULT
PWR1
MASTER
PWR2
COUPLER
LNK/ACT SPEED FDX/HDX
RING PORT
COMUPLER 
PORT
MODE
1 2 3 4 5 6 7 8 9
STAT
FAULT
PWR1
MASTER
PWR2
COUPLER
LNK/ACT SPEED FDX/HDX
RING PORT
COMUPLER 
PORT
MODE
1 2 3 4 5 6 7 8 9
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.