[ovirt-users] VLAN with one NIC

[gregor]

Thanks for the information's. I attached a second NIC to solve this,
then it was easy to configure ovirt to use the tagged and untagged network.

Regards
gregor

On 2015-09-06 08:31, Genadi Chereshnya wrote:
> Hi,
> Indeed at this stage it is not supported to have VM and VLAN networks on the same physical interface.
> I know it is supposed to be changed in the future (if I understand correctly it is already supported on the VDSM side).
> 
> For now you can have 2 VLAN networks on the same interface ( so if it works for your specific scenario you can tag the management network)
> Or you can configure the Management network to be non-VM as was proposed earlier and then you can add VLAN networks to the same interface (for such scenario you can't have management network to be configured on your VMs)
> Of course if you can have or add additional NICs to you host device, and then you can configure Management network on one of the interfaces and VLAN on another.
> 
> Regards,
>    Genadi
> 
> ----- Original Message -----
> From: "Chris Liebman" <chris.l at taboola.com>
> To: "gregor" <gregor_forum at catrix.at>
> Cc: "users" <Users at ovirt.org>
> Sent: Friday, September 4, 2015 7:58:43 PM
> Subject: Re: [ovirt-users] VLAN with one NIC
> 
> 
> 
> If your sharing a physical interface with both tagged and untagged traffic they don't allow VM's on the untagged link. I believe this is because some earlier versions of the bridging code in the kernel would allow pass the tagged traffic to VM's located on the untagged interface. That being a security issue. 
> 
> 
> On Fri, Sep 4, 2015 at 9:47 AM, gregor < gregor_forum at catrix.at > wrote: 
> 
> 
> Thanks, now I can use the eth0 to connect to the web-interface and the 
> logical vlan network to use in a VM but I can't use the untagged VLAN1 
> in the VM. When I add a new logical network without VLAN tagging the 
> web-interface returns "Cannot have more than one non-VLAN network on one 
> interface." 
> 
> When I create a logical network with taggged ID 1 I can't connect from a 
> VM to my VLAN1. 
> 
> So I have to find a way to created the following networks: 
> - ovirtmgmt: without tagged vlan for managing -> works 
> - vlan1: without tagged vlan for the VM's to connect to my default 
> network -> currently no solution 
> - vlan10: tagged vlan with id 10 -> works 
> 
> cheers 
> gregor 
> 
> On 2015-09-04 18:05, Chris Liebman wrote: 
>> You have to edit the ovirtgmt network and un-check the "VM Network" box: 
>>
>> Inline image 1 
>>
>> On Fri, Sep 4, 2015 at 8:47 AM, gregor < gregor_forum at catrix.at 
>> <mailto: gregor_forum at catrix.at >> wrote: 
>>
>> Hi, 
>>
>> is it possible to use different VLAN with one NIC in ovirt? 
>>
>> I can not add a logical network configured as VLAN to my ovirtmgmt 
>> interface, I get "Cannot have a non-VLAN VM network and VLAN-tagged 
>> networks on one interface." 
>>
>> The setup for the Port is a trunk of different tagged VLAN's and the 
>> default VLAN1 is untagged. Normally this work under centos where I give 
>> the nic eth0 an IP and create a nic eth0.10 for the VLAN with ID 10 and 
>> set an IP for it. 
>>
>> cheers 
>> gregor 
>>
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>>
>>
> 
> 
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