Open Stack

Hi,

[1] is a doc comparing OVN and ODL for Neutron. I wrote it in March so some
info might be stale.
Hope this can be useful, comments are welcome!

[1]
https://docs.google.com/document/d/13K4Xpdu1IbRJDj5JTepDI4nwUkCDCu7IOnYwHkZtcMA/edit?usp=sharing

Thanks,
Oleg

On Fri, Jun 10, 2016 at 12:28 AM, Kyle Mestery <mestery at mestery.com> wrote:

> On Thu, Jun 9, 2016 at 4:19 PM, Assaf Muller <assaf at redhat.com> wrote:
> > On Thu, Jun 9, 2016 at 5:06 PM, Kyle Mestery <mestery at mestery.com>
> wrote:
> >> On Thu, Jun 9, 2016 at 2:11 PM, Assaf Muller <assaf at redhat.com> wrote:
> >>> On Thu, Jun 9, 2016 at 1:48 PM, Ben Pfaff <blp at ovn.org> wrote:
> >>>> On Thu, Jun 09, 2016 at 10:28:31AM -0700, rezroo wrote:
> >>>>> I'm trying to reconcile differences and similarities between OVN and
> >>>>> OpenDayLight in my head. Can someone help me compare these two
> technologies
> >>>>> and explain if they solve the same problem, or if there are
> fundamental
> >>>>> differences between them?
> >>>>
> >>>> OVN implements network virtualization for clouds of VMs or containers
> or
> >>>> a mix.  Open Daylight is a platform for managing networks that can do
> >>>> anything you want.
> >>>
> >>> That is true, but when considering a Neutron backend for OpenStack
> >>> deployments, people choose a subset of OpenDaylight projects and the
> >>> end result is a solution that is comparable in scope and feature set.
> >>> There are objective differences in where the projects are in their
> >>> lifetime, the HA architecture, the project's consistency model between
> >>> the neutron-server process and the backend, the development velocity,
> >>> the community size and the release model.
> >>>
> >> Fundamentally, the main difference is that OVN does one thing: It does
> >> network virtualization. OpenDaylight _MAY_ do network virtualization,
> >> among other things, and it likely does network virtualization in many
> >> different ways. Like Ben said:
> >>
> >> "Open Daylight is a platform for managing networks that can do
> >> anything you want."
> >
> > I agree, but I don't think that was what was asked or makes for an
> > interesting discussion. I think the obvious comparison is OVN to
> > ML2/ODL using the ovsdb ODL project.
> >
> OK, I'll bite. :)
>
> Fundamentally, a project's focus is absolutely important, especially
> when a comparison is asked. When you ask the question: "How can OVN or
> ODL solve being a backend layer for Neutron?", for example, the answer
> with OVN is simple: You do it this way, and it works. For ODL, the
> question is much more nuanced, as it depends on *what* components in
> ODL you are using.
>
> Also, yes, the comparison between "ML2+python agents" vs. "ML2+OVN" is
> much more relevant IMHO.
>
> Thanks!
> Kyle
>
> >>
> >> Thanks,
> >> Kyle
> >>
> >>>>
> >>>>
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