[vortex] 3c905/905B performance problems

[Bogdan Costescu]

On Mon, 8 Oct 2001, Scott Wehrenberg wrote:

> However, the Boomerang on the client refuses to go to half-duplex.

So this might be in fact the cause of the "82" errors that you have
encountered.

> vortex-diag still shows it as being in full-duplex mode.

Ouch. Can you by any chance run the DOS tool from 3Com to check whether
the EEPROM media setting is "forced full-duplex" ? If so, please set it to
"auto".

> Setting options=6 for MII is the only option of the ones I've tried that
> will allow the card onto the network at all.

For Boomerang, "options=6" is the recommended one - it will select the MII
transceiver. One other that should also work is "options=4" which should
set 100BaseT (regardless of duplex).

> So how would I go about forcing the card into half-duplex since neither
> auto-negotiation nor this method works?

Use 'mii-diag -F'. Please post your results.

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