GE D90 Plus Instruction Manual page 90

COMMUNICATIONS OVERVIEW
82
Figure 59: Simple network topology without communications cards
The topology shown below allows SCADA, GOOSE, configuration, and monitoring functions
to share a single network. No redundancy is provided in this configuration. A
communications processor is required in each D90
GOOSE messaging. Ports 2 and 3 can be configured for single or dual IP redundancy. This
network topology is backwardly compatible with UR-series devices that are configured
with a single Ethernet port.
Figure 60: Simple single network topology with no redundancy
The topology below illustrates a single network for SCADA, GOOSE, configuration, and
monitoring functions. This configuration provides redundant hardware and media
redundancy. All communications are handled by port 2 under normal circumstances.
Failure of a fiber or Ethernet switch causes the communications to be re-routed to port 3.
Ports 2 and 3 are configured for single IP redundancy in this case. This network topology is
backwardly compatible with UR-series devices that are configured with dual Ethernet
ports.
Plus
device to facilitate SCADA and
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: COMMUNICATIONS