Allied Telesis AT-8948 Spécifications télécharger pdf (Page 46)

44 x900 Series Switch

C613-03092-00 REV D

Testing Ethernet LAN Ports

A crossover cable is required to run an Ethernet LAN test. How to make a

suitable cable is described in “Cables for RJ-45 Ethernet LAN Interfaces” on

page 31. To start the test, loop a four-pair crossover or straight-through cable

between two RJ-45 ports and enter the enable test interface=all command.

Interfaces connected by crossover cables are tested. If a test fails, contact your

authorised distributor or reseller.

To display test results, use the show test command. To display detailed output

with frame counts, use the show test count command. For example output

from these commands, see the Test Facility chapter in the Software Reference.

This chapter also contains information on how to test other interfaces.

Diagnostics

Software for the x900 Series switch includes a set of diagnostic programs that

perform basic checks of all system components. These diagnostics do not run

with normal operating code and require that the system be totally dedicated to

their use. The switch does not perform switching operations when diagnostics

are running.

Caution Diagnostics are designed to be run by service personnel only. This

section is not intended as a guide to diagnostics software. Detailed knowledge

of how the switch hardware functions is necessary in order to effectively use

diagnostic programs. For more information, contact your authorised distributor

or reseller.

Enabling

diagnostics mode

1. Connect a terminal to the RS-232 terminal port (ASYN0).

Use a terminal cable to connect a terminal to the RS-232 port (ASYN0) on

the switch. For more information on terminal cables, see “RS-232 Terminal

and Modem Cables” on page 30.

Set the terminal communication parameters as follows:

•Baud rate: 9600

• Data bits: 8

•Parity: None

• Stop bits: 1

•Flow control: Hardware

For more information, see “Using Windows Terminal and HyperTerminal”

on page 16.

2. Restart the switch.

To restart the switch, use a small diameter pin to press the recessed Reset

button on the front panel of the switch. You can also log in at the terminal

and enter the command:

restart reboot

How to log in is described in the Installation and Safety Guide.

3. Enable diagnostics mode during self-tests at startup.

The switch pauses briefly during its self-tests to allow an override.

For AT-8948, x900-48FE, and AT-9900 switches, the following prompt is

displayed:

Force EPROM download (Y)?

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