Chapter 10 Oam; Cable Diagnostics - D-Link xStack Reference Manual

xStack® DGS-3120 Series Layer 2 Stackable Managed Switch Web UI Reference Guide
Chapter 10

Cable Diagnostics

Cable Diagnostics
The cable diagnostics feature is designed primarily for administrators or customer service representatives to verify and
test copper cables; it can rapidly determine the quality of the cables and the types of error.
To view this window, click OAM > Cable Diagnostics as shown below:
To view the cable diagnostics for a particular port, use the drop-down menu to choose the port and click Test The
information will be displayed in this window.
NOTE: Cable diagnostics function limitations. Cable length detection is only supported on GE ports. Ports
must be linked up and running at 1000M speed. Cross-talk errors detection is not supported on FE
ports.
NOTE: The available cable diagnosis length is from 5 to 120 meters.
NOTE: The deviation of cable length detection is +/- 5M for GE ports.
Fault messages:
•
Open - This pair is left open.
•
Short - Two lines of this pair is shorted.
•
CrossTalk - Lines of this pair is short with lines in other pairs.
•
Unknown - The diagnosis does not obtain the cable status, please try again.
•
NA - No cable was found, maybe it's because cable is out of diagnosis specification or the quality is too bad.
OAM
Figure 10-1 Cable Diagnostics window
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