[tulip] tulip for presario 1700 with connexant chip breaks under load

[Donald Becker]

On Fri, 22 Mar 2002, Jochen Schieck wrote:

> > > $ ./mii-diag
> > > Basic registers of MII PHY #1:  1000 782d 0022 1720 01e1 0080 0004 2001.
> > >  Your link partner is generating 100baseTx link beat  (no autonegotiation).
> > >
> > > Our network here supports Full-Duplex. However, I do not know about the
> > > NIC chip in my notebook. Do you know more?
> >
> > Ah ha!  That might be the problem: is the switch you are connected to
> > set to forced full duplex?  If so, you will have force the driver to
> > full duplex mode.
..
> I tried to change the tulip driver to use full duplex. I looked at a
> computer with the same network with mii-diag and I got:
> ...
> The autonegotiated media type is 100baseTx-FD
> For this reason I used:
> $ rmmod tulip;  insmod tulip options=5

Errrm, I suspect that you will have to use full_duplex=1, or
options=14.  Setting options=5 will configure the chip to use a SYM
(symbol) transceiver, which it does not have.

> the diagnostic tool returns:
> $ ./mii-diag
> Using the default interface 'eth0'.
> Basic registers of MII PHY #1:  2100 780d 0022 1720 01e0 0000 0004 2001.

My laptop, connected to a good switch, is currently reporting

____
presario$ mii-diag
Using the default interface 'eth0'.
Basic registers of MII PHY #1:  1000 7829 0022 1720 01e1 45e1 0007 2001.
 The autonegotiated capability is 01e0.
The autonegotiated media type is 100baseTx-FD.
 Basic mode control register 0x1000: Auto-negotiation enabled.
 Basic mode status register 0x7829 ... 782d.
   Link status: previously broken, but now reestablished.
 Your link partner advertised 45e1: Flow-control 100baseTx-FD 100baseTx 10baseT-FD 10baseT, w/ 802.3X flow control.
   End of basic transceiver informaion.
____

> Can the chip in my notenook only work with half-duplex? Any idea? Or do I
> something wrong in using the tulip driver?

-- 
Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993