[ovirt-users] VLAN with one NIC

[Chris Liebman]

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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