Very Computer

Dear NG,

does somebody knows, if its possible to switch autosensing on the rtl8139
ethernet card.
I load it as a kernel module and would like to pass to the driver settings
about bandwidth / duplex mode.

Greetings

Andre

Quote:> Dear NG,

> does somebody knows, if its possible to switch autosensing on the rtl8139
> ethernet card.
> I load it as a kernel module and would like to pass to the driver settings
> about bandwidth / duplex mode.

Point you favourite search engine to mii-diag.

But...

The manually forced duplex or speed is hardly ever right. If you force a
connection to full-duplex when the conditions are not right, the connection
will be very slow dur to the massive amount of collisions generated. The
full-duplex setting switches only the collision detection off, so the
interface is able to transmit before listening first.

The gain obtained by full-duplex is slight even when everything is working
correctly. The only case when noticeable gain is obtained is when there is
massive amount of data travelling both directioins at the same time.

Tauno Voipio

Hi Tauno,

thank you for reply. What you describe is actually my problem :

Sometimes the networking adapter sets itself to 100 Mbit / full duplex and
the
network connection is very slow then. Thats why  I want to controll the
duplex mode
to set it manually to half-duplex.

Andre

Hi,

Quote:>> does somebody knows, if its possible to switch autosensing on the rtl8139
>> ethernet card.
>> I load it as a kernel module and would like to pass to the driver settings
>> about bandwidth / duplex mode.

> Point you favourite search engine to mii-diag.

s/mii-diag/rtl8139-diag/

Check
        dmesg
for what your card is doing.

Read /usr/src/linux/Documentation/networking/8139too.txt

Bye,

Frank

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Whow, a NIC with a life of its own...! - Can it make breakfast? I'll buy it!

Quote:> the
> network connection is very slow then. Thats why  I want to controll the
> duplex mode
> to set it manually to half-duplex.

There was another thread about this last week; I didn't follow it
closely, but perhaps You can get some ideas from there (IIRC, it was
even the same RTL based card...).

Cheers, Jack.