[CentOS-virt] Virtual NICs on a Xen VM

Sun Jul 8 17:07:21 UTC 2012
Pasi Kärkkäinen <pasik at iki.fi>

On Sat, Jun 30, 2012 at 07:33:32PM +0530, Arun Khan wrote:
> On Fri, Jun 29, 2012 at 1:49 AM, Dmitry E. Mikhailov
> <d.mikhailov at infocommunications.ru> wrote:
> > On Thursday 28 June 2012 20:22, Steve Campbell wrote:
> >> So what I'm asking  is "Is it possible to create a xen VM that has two
> >> virtual ethernet interfaces on a host that has only one real NIC"?
> >
> > IMHO you can create an empty* bridge interface on a virtualization host.
> >
> > *By 'empty' I mean no IP address and no real interfaces bridged.
> +1 This is the way I am configuring bridges and taps for my virtual network.

Yep, creating an "empty" bridge with no physical ethernet interfaces as uplinks 
is normal and straight forward.

Each vif (vnic) of the Xen VM is attached to a bridge. And it doesn't matter if 
it's a bridge with or without uplinks.

-- Pasi