phy cable-diagnostics tdr

VCT technology enables the diagnosis of a wire or cable conductor by sending a pulsed signal into the conductor and examining the reflection of that pulse. This method of cable analysis is referred to as TDR. By examining the reflection, the ICX device can detect and report cable data, such as line speed, cable length, and link pair status. Use this command to run a TDR cable diagnostic test. For more information on VCT TDR cable diagnostic testing, refer to the Virtual Cable Testing section of the RUCKUS FastIron Monitoring Configuration Guide.

VCT requires the Ethernet port speed be configured to the default auto-negotiation speed prior to running the test. VCT does not work on ports with fixed speeds. Use the speed-duplex auto command on the target port to ensure proper port speed for the test.

Before executing this command, clear any previous TDR test results using the clear cable-diagnostics tdr command.

View and analyze the diagnostic test results using the show cable-diagnostics tdr command.