Re: [Xen-users] can't get multiple VLANs to work

[Sébastien CRAMATTE <s.cramatte@xxxxxxxxxx>]

I've configured VLAN  under debian sarge (kernel 2.6.16.19 + xen 3.0.2)  
using this howto
http://felipe-alfaro.org/blog/category/xen/

The Felipe's howto explain two approach in depth (vlan config in domU 
and 1 vlan per bridge)
Unfortunately the Andrew's approach with one vlan per bridge doesn't 
work for me ...
I must use Felipe's approach  that configure vlan directly in each  domU.
Morevover I force the mtu of vlan interface  to "1496"  in each domU 

I've seen a message about this in  xen-devel list  :
http://lists.xensource.com/archives/html/xen-devel/2006-08/msg00935.html

Bonding + vlan not works  !
It's very very slow or I loose packet randomly ...
I've tried to setup it using methods  above... neither of them work ...

Regards


Tomasz Chmielewski a écrit :
> Andrew Ross wrote:
> > Tomasz Chmielewski wrote:
> > > I'm trying to set up Xen 3.0.2 to serve multiple guest domains, each
> > > using a unique VLAN.
> > > Is there anyone out there using Xen with a couple of domains, which use
> > > different VLANs? I would be thankful for any suggestions on where the
> > > problem might be (and no, it's not checksumming).
> > I'm afraid I can't offer any specific suggestions for your setup, but I
> > will mention that I'm successfully running several domUs with different
> > VLANs.
> >
> > However, both my dom0 and domU are Gentoo, and both our init.d system
> > and its interaction with Xen is a little different from other distros.
> >
> > I'm using tagged VLANs on a single physical interface (eth0), with the
> > vlan interfaces named vlanN . I create a separate bridge for each VLAN,
> > named after the VLAN's common-name (eg. dmz, external, staff, student,
> > etc). Each vlanN interface is added to the corresponding bridge, and any
> > domU which needs networking on that particular VLAN has its vif assigned
> > to the necessary bridge, in the usual bridge=whatever manner.
> The only way I could make it work is to set up vlans inside domU domains.
>
> It works, but I don't like it.

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