[tulip] asix supported, or not? 2.4 problems

Donald Becker becker@scyld.com
Tue Jul 30 07:22:01 2002

On Tue, 30 Jul 2002, Brett Dikeman wrote:
> At 3:27 PM -0400 7/29/02, Donald Becker wrote:
> >  > cards(the V3 I believe), I get tons and tons of errors under even
> >>  slight(100kB/sec) load, eventually the interface just completely
> >>  stops responding to the world(anywhere from 10 minutes to an hour or
> >>  two)...
> Hmm...its just a "dumb" 10/100 netgear switch...

That rules out the common forced-full-duplex at the switch.

> I tried monitoring the interface's link status with the --watch 
> option to miidiag, nothing ever changed, so its not flip-flopping.

That rules out repeated autonegotiations.

> I just tried forcing the card to advertise half-duplex 10BaseT...same 
> result, lots of dropped packets and frame errors.

And that hints (but doesn't confirm) that it's not a cable problem.
Most cables will work fine at 10baseT, but you need a Cat 5 cable to
work at 100baseTx.

> If it helps, dropped count:frame error is about a 5:1 ~ 6:1 ratio. 

That's pretty bad.

> Oh...and the errors are always on the rx side, tx side is always 
> clean.

> I have a hub I can swap into place of the switch, might give that a try.

A quick and useful thing to try.

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