phy cable-diagnostics tdr

Runs a Virtual Cable Test (VCT) Time Domain Reflectometry (TDR) cable diagnostic test for a specified port.
Syntax
phy cable-diagnostics tdr stackid/slot/port
Parameters
stackid /slot/port
Specifies the port for which the VCT TDR cable diagnostic testing is run, by device, slot, and port number.
Modes

Privileged EXEC mode

Usage Guidelines

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.

Examples

The following example clears any previous TDR test results for an interface and runs the TDR diagnostic test for port 3 on slot 2 of the first device in the stack. 

device# clear cable-diagnostics tdr 1/2/3
device# phy cable-diagnostics tdr 1/2/3
History
Release version Command history
08.0.20 This command was introduced.
Parent topic: Commands O, P, Q, R, and Sa through Sh