Run cable diagnostics on a port or a set of ports on the switch. Diagnostics can be done only on copper ports and can't be run on extended BPE ports, stacking ports, or fiber ports.
| port_list | Specifies to run diagnostics on a given port or set of ports. |
| all | Specifies to run diagnostics on all active ports. |
N/A.
This command provides wired cable diagnostics using the Time Domain Reflectometry capability of the PHY chips. Cable diagnostics can be used to locate cable breaks for individual twisted pairs in copper cable interfaces. If no breaks are found, it reports "Ok" for the individual twisted pairs.
The following example runs diagnostics on port 14:
# run diagnostics cable ports 14
Do you want to continue cable diagnostics? (y/N) Yes
cablediag: 1.1.0.14
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ C A U T I O N +
+ cablediag will momentarily interfere with traffic on active ports +
+-----------------------------------------------------------------------+
+ Ports: 14 +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Collecting port cable diagnostic information may take a moment...
port 14: cable (4 pairs, length +/- 10 meters)
pair A Ok, length 0 meters
pair B Ok, length 0 meters
pair C Ok, length 4 meters
pair D Ok, length 4 meters
This command was first available in ExtremeXOS 22.5.
This command is available on all platforms.