[Users] networking: basic vlan help

[Mike Kolesnik]

----- Original Message -----
> On 01/23/2014 08:34 PM, Juan Pablo Lorier wrote:
> > Hi Itamar,
> >
> > I don't know if I get your post right, but to me, it seems that if so
> > many users hit the same rock, it should mean that this should be
> > documented somewhere visible and in my opinion, push on getting bug
> > 1049476 <https://bugzilla.redhat.com/show_bug.cgi?id=1049476> solved asap.
> > Regards,
> 
> 1. yes, too many issues on this one, hinting we should provide better
> text explaining this in the UI.
> 
> 2. the bug you referenced[1]
> Bug 1049476 - [RFE] Mix untagged and tagged Logical Networks on the same NIC
> 
> is actually supported, as long as the untagged logical network is not a
> VM network (so VMs associated with it would not be able to see/create
> other logical networks traffic).
> 
> 3. considering how prevalent this is, maybe we should allow doing this,
> even for VM networks, with a big red warning, rather than block it,
> which seems to be failing everyone.

Besides that it's technically not possible in the way we currently use the Linux Bridge [1],
I'm not sure what's to gain from representing a single "flat" network with multiple representations.

Seems to me like there may be a couple different points here:
* ovirtmgmt is VM network by default - should be configurable on setup and/or DC creation.
  If it's such a prevalent issue, we should consider a default of non VM network (users can create a flat network and use it quite easily anyway, if they want).
* if people want to represent different L3 networks on the same L2 network, it is worthwhile to design a proper solution

Either way, I wouldn't push for allowing multiple bridged networks on the same physical interface (or bond).

[1] and also not allowed in OpenStack Neutron IIUC.

> 
> cc-ing some more folks for their thoughts.
> 
> 
> [1] in the future, please use number-name formatso not everyone would
> have to open it to understand
> 
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