I'm setting up and testing m0n0wall 1.2b9 on a Dell PowerEdge 750 with six
GigE interfaces.
The box has a simple P4 2.8, 512MB RAM, two onboard Intel Pro/1000 (MT and
CT) NICs.  I've added a Quad port PCI-X Intel Pro/1000MT adapter.  All
interfaces work fine but I as of yet have not been able to really test cross
interface communications.  The environment this m0n0wall box is intended for
will never see the kinds of traffic you are describing though.  Our iSCSI
traffic is on a separate nonrouted VLAN.

Brandon Kahler

-----Original Message-----
From: sai [mailto:sonicsai at gmail dot com]
Sent: Friday, July 29, 2005 11:15 PM
To: Chris Buechler
Cc: m0n0wall at lists dot m0n0 dot ch
Subject: [m0n0wall] Re: Maximum No. of Interfaces.


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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