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MULTILINK ETHERNET COMMUNICATIONS SWITCH – QUICKSTART GUIDE 41
To test the operation of the redundancy proceed as follows:
Z Establish communication to one of the relays.
Z Disconnect the normal port’s transmit or receive fiber.
Z Note that communications to the relay aren’t disrupted, and check
that Ethernet port diagnostics are enabled.
The message - primarily Ethernet Fail - will be seen on the display.
The relay has switched over to the alternate port.
Primary Fiber Optic