[ovs-discuss] openvswitch as a guest VM with multiple NICs

Gurucharan Shetty shettyg at nicira.com
Mon Nov 24 18:08:35 UTC 2014

On Mon, Nov 24, 2014 at 9:55 AM, Emma Anderson <em.anderson88 at yahoo.com> wrote:
> Hi,
> I have installed openvswitch on a guest VM, then created a bridge, and added
> eth0 and a tap interface to that bridge. Tap interface type is internal.
> Interface eth0 is already attached to a vif on xen. How I can assign tap
> interface to another vif in xen?
AFAIK, it is not possible. If what you want is a guest VM with 2 NICs,
then you need 2 networks (A Xen term for a bridge) in dom0. Then you
will need to create 2 NICs attached to 2 different networks when you
define your VM.

> I have the second vif defined in vm config
> file, but since mac address of the tap interface in guest vm and the mac
> address of the second vif that is specified in config file (under vif =
> [..]) are different, I think they are not connected.
> Please note that it is like having a guest VM with two NICs.
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