[ovirt-users] Passing VLAN trunk to VM

[Edward Haas]

Passing a trunk to the vnic is supported long ago.
Just create a network over a nic/bond that is connected to a trunk port and
do not define any VLAN (we call it non vlan network).
In oVirt, a non-vlan network will ignore the VLAN tag and will forward the
packets as is onward.
It is up to the VM vnic to define vlans or use a promisc mode to see
everything.

OVS can add a layer of security over the existing, by defining explicitly
which vlans are allowed for a specific vnic, but it is not
currently available.


On Thu, Mar 9, 2017 at 11:40 PM, Simon Vincent <sv at srvincent.co.uk> wrote:

> I was wondering if open vswitch will get round this problem. Has anyone
> tried it?
>
> On 9 Mar 2017 7:41 pm, "Rogério Ceni Coelho" <rogeriocenicoelho at gmail.com>
> wrote:
>
>> Hi,
>>
>> Ovirt user interface does not allow to input 4095 as a tag vlan number
>> ... Only values between 0 and 4094.
>>
>> This is useful to me too. Maybe any other way ?
>>
>> Em qui, 9 de mar de 2017 às 16:15, FERNANDO FREDIANI <
>> fernando.frediani at upx.com> escreveu:
>>
>>> Have you tried use Vlan 4095 ? On VMware it used to be the way to pass
>>> all Vlans from a vSwitch to a Vlan in a single port. And yes I have used it
>>> also for pfSense.
>>>
>>> Fernando
>>>
>>> On 09/03/2017 16:09, Simon Vincent wrote:
>>>
>>> Is it possible to pass multiple VLANs to a VM (pfSense) using a single
>>> virtual NIC? All my existing oVirt networks are setup as a single tagged
>>> VLAN. I know this didn't used to be supported but wondered if this has
>>> changed. My other option is to pass each VLAN as a separate NIC to the VM
>>> however if I needed to add a new VLAN I would have to add a new interface
>>> and reboot the VM as hot-add of NICs is not supported by pfSense.
>>>
>>>
>>>
>>>
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