[vortex-bug] Re: 3c59x 0.99H and 3c905B (Cyclone) problems

[Bogdan Costescu]

On Fri, 4 Aug 2000, Sergei Haller wrote:

> I would suggest nearly the same: run the 3c90xcfg.exe and set 
> 
>   directly to 100Mbps/full-duplex (if you are connected to a switch)
>            or 100Mbps/half-duplex (if you are connected to a hub) 
> 
> We had similar problem with 3com-cards: auto-negotiating did not work.

I repeat (or Donald Becker might do it!): there is no need to force the
media type. The problems that you might have encountered were probably
caused by new cards (905C) using an old driver (<= 2.2.15).

And there was a report suggesting that the link is established correctly
(lights on the switch) which eliminates this as a cause.

The best ideea to check whether the card works somehow is to use tcpdump
to see if there is any traffic received (and run for more than a minute to
account for the STP delay) after the network is brought up. At the same
time, try to ping from a Windows host (also for more than a minute).

Sincerely,

Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu@IWR.Uni-Heidelberg.De