Dell PowerEdge VRTX - Manual (Page 401)

Green Ethernet 401
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Plasma-ARC
2+3\new_system_mifs_ARC2_latest\750_Green_Ethernet.fm
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green-ethernet short-reach threshold
Use the green-ethernet short-reach threshold Global Configuration mode
command to set the maximum cable length for applying short-reach. Use the
no form of this command to return to default.
Syntax
green-ethernet short-reach threshold cable-length
no green-ethernet short-reach threshold
Parameters
cable-length—Specifies the maximum cable length (in meters) measured by
VCT that allows applying short-reach mode (cable-length 0–70 meters)
Default Configuration
The default length is 40 meters.
Command Mode
Global Configuration mode
User Guidelines
Note that the automatic cable length measurement accuracy is +-10 meters.
i.e. a cable with a real length of 30 m may be evaluated in the range of
20m–40m. Length performance depends on the link partner signal quality,
cable quality and whether the link partner also operates in short-reach mode.
Marvell recommends a default of 50m for any cable type.
However, Marvell tests show that the link partner can operate error free with a
cable length of up to 80 m (cat 5e).
The user may choose to change the threshold parameter under certain
circumstances.
Setting the threshold to 0 meters, basically results in the short reach feature
always being disabled, because the threshold is always exceeded.