RE: [Xen-users] Setting up a "dumb" network for domU's

[Theo Cabrerizo Diem <diem@xxxxxxxxxxxx>]

Still on this topic :

Is there any network speed limit between the Dom0 and DomU's ?

Example, in this user's scenario, can't him make the bonding on the Dom0
and add the "trunk" interface in the bridge with the DomUs ?

IMHO this would work unless there's a speed limit in the network level,
let's say 100 Mbit/s between a domU eth0 and Dom0 vif equivalent.

Still .. if he doesn't need 4xinterfaces bonding for each domU, (but for
the sum of DomUs, let's say for a SAN), he can still do the bonding on
Dom0 and have a <limited> interface per DomU, which isn't that bad.

[]'s

Theo


On Wed, 2006-12-06 at 12:47 +0100, Petersson, Mats wrote:
>  
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> > Ulrich Windl
> > Sent: 06 December 2006 11:36
> > To: xen-users@xxxxxxxxxxxxxxxxxxx
> > Subject: Re: [Xen-users] Setting up a "dumb" network for domU's
> > 
> > On 6 Dec 2006 at 12:00, Theo Cabrerizo Diem wrote:
> > 
> > > Have a look at XenNetworking :
> > > http://wiki.xensource.com/xenwiki/XenNetworking
> > > 
> > 
> > The remaining question is: Why are there only three bridged 
> > supported in XEN (docs 
> > say so). Where is that limit, and can it be raised?
> 
> Because each page (4K) can hold 3 x 1536 bytes of network packets -
> which means that the buffer(s) for the network devices can all be fitted
> into a single page. 
> 
> It can be raised, but it's non-trivial, as far as I understand it. 
> 
> --
> Mats
> > 
> > I'm wondering whether I should move bonding from Dom0 to 
> > DomUs, but then I'd need 
> > four bridges at least...
> > 
> > Regards,
> > Ulrich
> > 
> > 
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> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> > 
> > 
> > 
> 
> 
> 
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> 


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