Allied-telesis AT-FS724 Manual do Utilizador descarregar pdf (Página 44)

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This section lists common possible sources of error and actions

required to fix them.

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This may indicate:

❑

A loose data cable.

❑

A wrong cable type used or maximum cable length exceeded.

❑

The device at the other end of the connection is turned

off

❑

The data cable is not wired correctly (straight / crossed) for the

device.

❑

The network administrator manually disabled the port

through the Port Configuration menu.

❑

The port’s selected transmission mode does not match that of

the attached device.

Perform the following steps in sequence; you need not proceed to

the next step if the problem is resolved:

1. Make sure the data cables are secure.

2. Make sure the device at the end of the connection is turned

3. Make sure the data cable is wired correctly (straight / crossed) for

the device.

4. Connect a terminal and check the port status; see “Port

Configuration” on page 2-12 for details.

❑

If the port is

Enabled

, make sure the transmission speed

matches that of the connected device (auto-negotiating, full-

or half-duplex).

Note

Very poor communications result when duplex settings on the switch

and the device do not match.

If the attached device is auto-negotiating, set the switch port to auto-

negotiate.

If the device does not support auto-negotiating, set the switch port to

the correct speed and duplex for the device.

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