D-Link DES-1228/ME Reference Manual page 295

Example usage:
To test the cable on ports 25 to 28:
DES-1228/ME:5#cable_diag ports 20-23
Command: cable_diag ports 20-23
Perform Cable Diagnostics ...
Port Type
---- ------- --------------
20 GE
21 GE
22 GE
23 GE
DES-1228/ME:5#
DES-1228/ME Metro Ethernet Managed Switch CLI Reference Guide
Link Status
--------------------------
Link Up OK
Link Down No Cable
Link Down No Cable
Link Down No Cable
Test Result
291
Cable Length (M)
-----------------
3
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-
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