MultiLink Ethernet Switches: Design


Designed for the unique needs of the Protection and Control Industry
The MultiLink Ethernet Switches have been designed for the specific requirements of devices used in Utility and Industrial environments such as Protection Relays. The MultiLink Ethernet Switches support many unique features that allow for full redundancy under network fault conditions.


Link Loss Alert

The MultiLink Switch's Link Loss Alert feature allows for Protective Relays to recover from situations where only one of the fiber cables connected to the relay is damaged. The Link Loss Alert feature works with both 10Mbit and 100Mbit fiber ports of GE Multilin's Universal Relay, and allows for seamless switching to the relay's secondary port under all network fault conditions.

Modbus Protocol Support
Identifying network communication problems and retrieving network statistics from the MultiLink switches can now be achieved in SCADA or DCS systems through the use of the supported Modbus TCP/IP protocol. Modbus is a protocol supported by most Human Machine Interfaces and PLCs and can therefore be integrated into existing systems without having to invest in additional SNMP or other Network Management Software.

SMART RSTP
Enhanced High Speed Recover of Redundant Ring Networks

The unique requirements of the Protection and Control Industry require Ethernet networks to be more reliable and to recover from network problems faster than is generally accepted in other commercially available equipment. The MultiLink Ethernet Switch's SMART RSTP feature allows for recovery from faults in Ring Network Architectures in less than 5 milliseconds per switch in the network – 10 times faster than generally available in standard Ethernet Switches.

Example of Network Fault recovery testing using MultiLink SMART RSTP in a Ring Network Architecture