Subject: Re: choice of NIC [was Re: questions about netbsd]
To: Pavel Cahyna <>
From: Manuel Bouyer <>
List: tech-net
Date: 02/09/2003 17:11:05
On Sun, Feb 09, 2003 at 04:48:24PM +0100, Pavel Cahyna wrote:
> > > >network card would you guys recommend for such demanding 
> > > >environments? 
> > 
> > SMC etherpowerII, 3com, intel, ...
> > note that the 3com has support for hardware IP4/TCP4/UDP4 checksums, so
> > it may be a win for high traffic servers.
> > You can also go with intel gigabit adapters (I have the 64bit server, and
> > the dual-port 64bit versions), they're not that expensive and also
> > have hardware IP4/TCP4/UDP4 checksums. If you have 64bit PCI busses, it
> > can be a win even at 100Mbs.
> Hello, 
> please, is this checksumming capability supported on NetBSD? I remember Jason
> Thorpe saying that even if Intel's 100 Mbit cards (fxp) can do it, intel
> hasn't released the documentation and so it's not supported. Are you
> sure that the wm driver in NetBSD can do it? The wm(4) manpage doesn't
> mention checksumming at all.

Yes, the wm driver can do it, but can't use hardware checksums + vlans at
the same time.

Manuel Bouyer <>
     NetBSD: 24 ans d'experience feront toujours la difference