Hi Carl,
What you want is probably to use the l2gateway type logical switch port in
OVN.
Please refer to the following doc for the description (not very detailed
unfortunately):
http://www.openvswitch.org//support/dist-docs/ovn-nb.5.txt
Look at the Logical_Switch_Port Table type field, along with some of the
options keys.
Unfortunately we do not support this in ovirt, nor is this supported in
ovirt-provider-ovn.
To use this ovn feature, you will have to manually add an l2gateway port to
your environment.
Marcin
On Sun, Jun 24, 2018 at 11:18 PM, <[email protected]> wrote:
> I have install ovirt 4.2.3 and everything seems to be working fine: I can
> create virtual (Geneve overlay) networks for communication between virtual
> machines via the external provider ovirt-provider-ovn by using the OWS
> switch on the cluster. Live migrations and everything else within the
> virtual environment works perfectly :-)
>
> For connections from virtual machines to physical VLAN's in a switch, I
> can also create a logical network which is created using the external
> provider ovirt-provider-ovn by specifying a connection to a physical VLAN
> network created as a separate data center network. This method requires
> that all ovirt-nodes (hosts) in the cluster have access to the physical
> network though.
>
> What I am looking for is a way to implement a L2 Gateway such that (not
> all) ovirt nodes (hosts) need to have direct access to the physical
> network. What I am looking for is a way where virtual machines can
> communicate with the L2 Gateway via virtual (Geneve overlay) networks. On
> the L2 Gateway the virtual network shall then be bridged to the physical
> VLAN on a dedicated network interface. My goal is that the virtual network
> and the physical network becomes one big broadcast domain.
>
> This concept has been described by different people on the Internet such
> as these articles:
> - https://weiti.org/ovn/2018/01/03/ovn-l2-breakout-options
> - https://wiki.openstack.org/wiki/Neutron/L2-GW
>
> How can I accomplish something similar in an ovirt-environment?
>
> Thanks in advance,
>
> Carl Grundholm
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