[openstack-dev] [Nova][Neutron] Linuxbridge as the default in DevStack [was: Status of the nova-network to Neutron migration work]

Jens Rosenboom j.rosenboom at x-ion.de
Fri Apr 10 11:47:42 UTC 2015


2015-04-10 12:29 GMT+02:00 Attila Fazekas <afazekas at redhat.com>:

>
>
>
>
> ----- Original Message -----
> > From: "Jens Rosenboom" <j.rosenboom at x-ion.de>
> > To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> > Sent: Friday, April 10, 2015 10:18:38 AM
> > Subject: Re: [openstack-dev] [Nova][Neutron] Linuxbridge as the default
> in DevStack [was: Status of the nova-network
> > to Neutron migration work]
> >
> > 2015-04-10 9:05 GMT+02:00 Attila Fazekas < afazekas at redhat.com > :
> >
> >
> > Hi,
> >
> > I do not recommend Linux bridge as default for devstack.
> >
> > I think most developer does not have a switch configured with trunk
> ports,
> > or tricks for faking it in a visualized environment.
> >
> >
> > ​I would argue this to be a non issue. Most developers will only run
> single
> > node setups anyway.
> > If they setup multiple nodes connected with a switch that happens not to
> be
> > VLAN aware, it will
> > most likely still be VLAN transparent at the same time, so things still
> will
> > just work. This
> > also includes the propably most common case of multiple qemu instances
> > connected via a Linuxbridge
> > device on the host.
>
> It is for untagged traffic only.


​Can you please be more specific here? For me, if I have a setup like

vm1:eth0 <-> host:br0 <-> vm2:eth0

then I can use e.g. eth0.100 between the two VMs just fine.​

​ This is for a plain
libvirt based setup on my workstation, not within OpenStack.​
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