Allied Telesis AT-DMC100/LC, Installation Manual

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DMC1000/100 Series Media Converters Installation Guide
31
Missing Link (ML)
The DMC1000/100 V2 series media converters offer the Missing Link
(ML), which is intended for use when the V2 media converter is connected
standalone between a fiber endpoint and copper endpoint.
Note
To find out whether your device is V1 or V2, see “Differences
Between V1 and V2” on page 25.
Standalone
Media Converter
in ML Mode
Following are example scenarios for the media converter in the ML mode,
connected standalone between two end nodes.
Note
This section applies only to the DMC1000/100 V2 media converter.
The DMC1000/100 V1 media converter does not have the ML mode.
Figure 21 shows media converter and its LINK/ACT LED behavior in the
ML mode under normal conditions.
Figure 21. ML in Normal Condition
Figure 22 shows media converter and its LINK/ACT LED behavior in the
ML mode when a fiber connection is down.
When a fiber connection to the media converter fails, the fiber LINK/ACT
LED is turned off. The copper port LINK/ACT LED blinks slowly and the
copper link goes down.
Figure 22. ML with Fiber Connection Down
AT-DMC1000
End Node Copper Cable
Fiber Cable
Link LED On
End Node
Link LED On
Copper
LINK/ACT
LED On
Fiber
LINK/ACT
LED On
Link Up Link Up
AT-DMC1000
End Node Copper Cable
Fiber Cable
Link LED Off
End Node
Link LED Off
Copper
LINK/ACT
LED
Blinking
Fiber
LINK/ACT
LED
Off
Link Down Link Down