[ovirt-users] Re: VLAN Trunk interface with OVN provider (ovirt HE 4.2.6.4-1.el7)
On Fri, 21 Sep 2018 14:17:37 +0200
Sandro Bonazzola <sbonazzo(a)redhat.com> wrote:
Il giorno ven 21 set 2018 alle ore 12:34 Davide Butti
<dbutti194(a)gmail.com> ha scritto:
> Hello; I'm having some hard time getting my oVirt cluster back to
> work, after the last update to 4.2.6.
>
> One thing that does not work anymore is VLAN Trunks; before the
> update, the cluster was running in OVS mode, and I could define
> logical networks without VLAN tag; then, networks packets got
> forwarded to the guest as "tagged".
>
> Right now version 4.2.6 won't allow me to assign the (OVS) Logical
> network to the guest NICs anymore, but it insists that I use a vNIC
> profile from an external provider.
>
> First question: Is this expected? Must I really work with externally
> provided networks only?
>
Yes, this way there is a clean separation between VM networks and host
networks.
> Anyway, for the vNIC interfaces that only carry untagged
traffic, I
> was able to define an external OVN network, connect it to the
> corresponding "Data center Network", and everything works as it did
> before. But the "trick" does not work for "trunk" interfaces
that
> should carry VLAN tagged traffic.
>
> So to the second (main) question? How is this to be solved? Is
> there a way to define a VLAN trunk under OVN?
Trunk is not implemented in ovirt-provider-ovn.
If you think that this would be helpful for you, you are welcome to
create a bug and explain in short words your motivation.
> Or is there a way to
> pickup a Data Center logical network to attach to the vNIC as we
> did before?
>
As it is not working with networks provided by ovirt-provider-ovn, it
should work with neutron networks in clusters with OVS switch type, or
with oVirt logical networks or neutron networks in clusters with
linux-bridge switch type.
>
Dominic, can you please have a look?
> Thanks in advance for your help!
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