100Mb network card problem

[Marcel J.E. Mol]

Hello,

I'm trying to get an old RS6000 (43p) onto a 100Mb ethernet switch.
The problem is that it only seems to work partly in 10Mb mode (but then
I only get 10 to 20 kB/s throughput).
Even when I set media_speed to 100Mb (full or half duplex) I can't
get any data to/from the network. The switch shows link and 100Mb
leds for the port but the card in the machine only once in a while
blinks its 100Mb led. The full duplex led on the card always stays
off no matter what media_speed.
All other systems on the switch (mostly intel boxes) work perfectly
in 100Mb full duplex.

When connecting the rs6000 directly to another system using a cross
cable things work great!!!

The card is an: IBM 10/100 Mbps Ethernet PCI Adapter (23100020)
AIX level is 5.1 ML 4.

Any tips or hints?

-Marcel
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=======--------- ph. +31-(0)6-54724868 P.O. Box 112
=======--------- [email]marcel@mesa.nl[/email] 2630 AC Nootdorp
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[RobH]

"Marcel J.E. Mol" <marcel@mesa.nl> wrote in message
news:pan.2003.09.29.14.48.49.498371@mesa.nl...

> Hello,
>
> I'm trying to get an old RS6000 (43p) onto a 100Mb ethernet switch.
> The problem is that it only seems to work partly in 10Mb mode (but

then

> I only get 10 to 20 kB/s throughput).
> Even when I set media_speed to 100Mb (full or half duplex) I can't
> get any data to/from the network. The switch shows link and 100Mb
> leds for the port but the card in the machine only once in a while
> blinks its 100Mb led. The full duplex led on the card always stays
> off no matter what media_speed.
> All other systems on the switch (mostly intel boxes) work perfectly
> in 100Mb full duplex.
>
> When connecting the rs6000 directly to another system using a cross
> cable things work great!!!
>
> The card is an: IBM 10/100 Mbps Ethernet PCI Adapter (23100020)
> AIX level is 5.1 ML 4.
>
> Any tips or hints?
>

Ensure that the port on your switch is set to 100FD rather than
auto-negotiate and configure your RS6k NIC to 100FD.

It's a common problem on RS6ks.

RobH

[christof]

Hi, are the settings of the switch 100/FD? What is "entstat -d entx"
saying?
On my experience, it only works propper when both sides are set to
100/FD.
Sometimes the patch cabel has a insulate contact or the cable is too
long. Or its no cat 5 cable.

Stoffelus