Troubleshooting guide

98 Advanced System Diagnostics and Troubleshooting Guide
Additional Diagnostics Tools
The disable diagnostics cable command also purges the cable diagnostics values for the selected
ports from the CDM data structures.
Viewing and Interpreting CDM Test Data
To display CDM test information currently stored in the CDM data structures, use this command:
show diagnostics cable {ports {<portlist> | all}} {mode {auto | manual | both}}
{detail}
The show diagnostics cable command displays or prints the following cable diagnostics data for
each specified port:
• Time and date of test
• Port identity
• Speed (Mbps)
• Cable length (meters)
• Cable pair (subcategory information for each of the four pairs)
• Fault location (if any, as a distance, in meters)
• Pair skew (ns)
• Pair polarity
• Cable status
• Pair swap
• Diagnostic mode
NOTE
You can specify that cable diagnostics data should be displayed for either the latest automatic
diagnostics run, the latest manual diagnostics run, or both.
The following command displays cable diagnostics information in detail format for ports 1 through 3 on
slot 6:
show diagnostics cable ports 6:1-6:3 detail