Chapter 10
| Interface Commands
Cable Diagnostics
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devices. This feature, referred to as Digital Diagnostic Monitoring (DDM) in the
command display, provides information on transceiver parameters including
temperature, supply voltage, laser bias current, laser power, and received optical
power.
Example
Console#show interfaces transceiver ethernet 1/25
Connector Type : LC
Fiber Type : [0x00]
Eth Compliance Codes : 1000BASE-ZX
Baud Rate : 1300 MBd
Vendor OUI : 00-00-5F
Vendor Name : SumitomoElectric
Vendor PN : SCP6G94-FN-BWH
Vendor Rev : Z
Vendor SN : SE08T712Z00006
Date Code : 10-09-14
DDM Info
Temperature : 35.64 degree C
Vcc : 3.25 V
Bias Current : 12.13 mA
TX Power : 2.36 dBm
RX Power : -24.20 dBm
Console#
Cable Diagnostics
test cable-diagnostics This command performs cable diagnostics on the specified port to diagnose any
cable faults (short, open, etc.) and report the cable length.
Syntax
test cable-diagnostics interface interface
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-10/24)
Command Mode
Privileged Exec
Command Usage
â—† Cable diagnostics are performed using Digital Signal Processing (DSP) test
methods. DSP analyses the cable by sending a pulsed signal into the cable, and
then examining the reflection of that pulse.
â—† This cable test is only accurate for Gigabit Ethernet cables up to 100 meters.
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