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 From:  sai <sonicsai at gmail dot com>
 To:  Chris Buechler <cbuechler at gmail dot com>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: Maximum No. of Interfaces.
 Date:  Sat, 30 Jul 2005 11:14:53 +0500
does FreeBSD 4.x / m0n0 support PCI-X cards? I thought that it didn't.

On 7/29/05, Chris Buechler <cbuechler at gmail dot com> wrote:
> On 7/29/05, Jeroen Visser <monowall at forty dash two dot nl> wrote:
> > 
> > The traffic on the wall is going to be severe. There a three subnets which
> are to
> > communicate with one an other over 1000 Mbit. (ISCSI SAN)
> > Is it feasible, has anyone ever tried it and what are the experiences.
> > In regard of the ISCSI connections, does m0n0wall support Jumbo Packets ?
> > (The cards do, but that's a whole other layer ;-)
> > 
> 
> missed this part before my last reply.  
> 
> it should support jumbo frames just fine, but the option to enable
> that isn't in the GUI.
> 
> with the kind of traffic you're talking about pushing, you're going to
> slaughter your PCI bus long before you exhaust anything else.  You
> didn't mention what kind of motherboard you're planning to use, but
> unless it has one PCI bus per PCI slot and all PCI-X slots (not
> likely), you're going to have issues pushing lots of traffic through
> four gig interfaces per PCI slot.  From the sounds of it, you probably
> don't even have PCI-X slots, and probably have one or two PCI buses. 
> At ~133 MBps per PCI bus, that's 1056 Mbps, or just one half duplex
> gig interface per PCI bus (at best).  If you have 24, needless to say,
> you aren't going to get the kind of throughput you're after.
> 
> -Chris
> 
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