Test cable-diagnostics – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual

Page 335

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Brocade 6910 Ethernet Access Switch Configuration Guide

285

53-1002581-01

Interface Commands

12

Eth Compliance Codes : 1000BASE-SX

Baud Rate : 1200 MBd

Vendor OUI : 00-30-D3

Vendor Name : AGILENT

Vendor PN : HFBR-5710L

Vendor Rev :

Vendor SN : 0111010843570877

Date Code : 01-11-01

DDM Info

Temperature : 37.56 degree C

Vcc : 3.29 V

Bias Current : 24.15 mA

TX Power : -5.79 dBm

RX Power : -34.03 dBm

Console#

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: 1-12)

Command Mode

Privileged Exec

Command Usage

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.

This cable test is only accurate for cables 7 - 140 meters long.

The test takes approximately 5 seconds. The switch displays the results of the test immediately
upon completion, including common cable failures, as well as the status and approximate
length of each cable pair.

Potential conditions which may be listed by the diagnostics include:

OK: Correctly terminated pair

Open: Open pair, no link partner

Short: Shorted pair

Not Supported: This message is displayed for any Fast Ethernet ports that are linked up, or
for any Gigabit Ethernet ports linked up at a speed lower than 1000 Mbps.

Impedance mismatch: Terminating impedance is not in the reference range.

Ports are linked down while running cable diagnostics.

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