|
Feature |
Product |
Release introduced |
|---|---|---|
|
Time Domain Reflectometer (Cable Diagnostic) |
5320 Series |
Fabric Engine 9.0.2 |
|
5420 Series |
Fabric Engine 8.10 Not supported on 5420F-24S-4XE |
|
|
5520 Series |
Fabric Engine 9.0.2 Not supported on 5520-24X or 5520-48SE |
|
|
5720 Series |
Fabric Engine 9.0.2 |
|
|
7520 Series |
Fabric Engine 9.0.2 Supported on 7520-48XT-6C |
|
|
7720 Series |
Not Supported |
|
|
VSP 4900 Series |
Not Supported |
|
|
VSP 7400 Series |
Not Supported |
With Time Domain Reflectometer (TDR) cable diagnostic, you can test Ethernet cables connected to a switch port, or ports, for defects. Use this functionality to diagnose a link with poor connectivity. The cable diagnostic detects the state of the port or ports, the status of the cable pairs, and the length of the cable.
Note
You can perform TDR cable diagnostic on copper ports.
The following table lists the states of the cables connected to a port or ports.
| State | Description |
|---|---|
|
Ok |
No cable fault is detected. |
|
Open |
Detects lack of continuity between the pins at each end of the cable. |
|
Short |
Detects a short circuit in the cable. |
|
Open/Short |
Detects either a short circuit on the cable or a lack of continuity between the pins at each end of the cable. |
|
Crosstalk |
Detects interference and degradation between two pairs in the cable. |
|
Unknown |
Detects an unknown issue. |