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Re: [Xen-users] limit on the number of NICs per domU

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] limit on the number of NICs per domU
From: Jerry Amundson <jerry@xxxxxxx>
Date: Thu, 29 Jun 2006 10:04:31 -0500
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On Thu June 29 2006 07:21, Goetz Bock wrote:
> On Wed, Jun 28 '06 at 14:29, Jan Srzednicki wrote:
> > Xen FAQ states that there's a limitation of 3 virtual network
> > interfaces per domU:
> > ...
> > My question is: is there any way (like setting some #define or
> > something in the sources) to rise this limit to 4 or 5? Why is the
> > limit set to 3 actually?
>
> Not that I would know of.
>
> The problem is: the struct required for a virtual NIC is so big that
> only three instances fit into one page of memory. And extending the
> Xen interface to support more then one page of memory seams to
> require major surgery.

Do alias interfaces eth0:1, etc. count in the limitation?

jerry

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