[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [Xen-devel] can several guest OS be bound to their own ports on multiport Ethernet NIC?

  • To: "Igor Mendelev" <imendelev@xxxxxxxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxxx>
  • From: "Neugebauer, Rolf" <rolf.neugebauer@xxxxxxxxx>
  • Date: Mon, 6 Dec 2004 17:19:05 -0000
  • Delivery-date: Mon, 06 Dec 2004 17:20:34 +0000
  • List-id: List for Xen developers <xen-devel.lists.sourceforge.net>
  • Thread-index: AcTbreEqNbXdirvMS76+sw18VOMAlQACM4pg
  • Thread-topic: [Xen-devel] can several guest OS be bound to their own ports on multiport Ethernet NIC?

Apart from Brian's reply

Any n-port driver supported by Linux *should* also work with Xen.

If you want to assign different ports to different VMs these ports need
to appear as separate PCI devices (have a unique ID). The you should be
able to hide these ports from dom 0 and assign them individually to a

Also you need to make sure that you will be able to assign different
ports on each card to different IRQs because otherwise performance won't
be very good. In fact, I don't think shared interrupts between different
VMs has been particularly stress tested...it probably works ok but there
might be corner cases...


> -----Original Message-----
> From: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> admin@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Igor Mendelev
> Sent: 06 December 2004 08:09
> To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] can several guest OS be bound to their own ports
> multiport Ethernet NIC?
> [basic architecture question from a Xen newbiew; sorry if it's too
> I'm looking into running 10-15 guest OS (XenoLinux) on a single box
> each guest OS will need separate physical Ethernet connection (with
> own
> MAC address etc).
> Assuming I'll be using 2 or 4-port NICs (due to limited # of PCI
> can each of the
> 4 guest OS be bound to it's own port on such NIC?
> Which 4-port NICs (if any) are suppported now? Are any more
> planned/expected
> to be supported for Xen 3.0 (as this plan depends on using AMD64
> Thanks.
>                  Igor

SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.