User`s manual

PT-G7509 User’s Manual Featured Functions
3-27
Ring Coupling Configuration
For some systems, it may not be convenient to connect all devices in the system in a single
redundant ring, since some devices could be located in a remote area. For these systems, Ring
Coupling can be used to group devices into smaller redundant rings that 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 the different PT series Ethernet switches.
Ring Coupling for Turbo Ring
Switch B
Switch A: Coupler
Switch D
Switch C
Main Path
Coupling Control Port
Coupling Port
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