[openstack-dev] [Neutron] Edge-VPN and Edge-Id

Ian Wells ijw.ubuntu at cack.org.uk
Mon Dec 1 15:46:02 UTC 2014

On 1 December 2014 at 04:43, Mathieu Rohon <mathieu.rohon at gmail.com> wrote:

> This is not entirely true, as soon as a reference implementation,
> based on existing Neutron components (L2agent/L3agent...) can exist.

The specific thing I was saying is that that's harder with an edge-id
mechanism than one incorporated into Neutron, because the point of the
edge-id proposal is to make tunnelling explicitly *not* a responsibility of
Neutron.  So how do you get the agents to terminate tunnels when Neutron
doesn't know anything about tunnels and the agents are a part of Neutron?
Conversely, you can add a mechanism to the OVS subsystem so that you can
tap an L2 bridge into a network, which would probably be more

But even if it were true, this could at least give a standardized API
> to Operators that want to connect their Neutron networks to external
> VPNs, without coupling their cloud solution with whatever SDN
> controller. And to me, this is the main issue that we want to solve by
> proposing some neutron specs.

So the issue I worry about here is that if we start down the path of adding
the MPLS datamodels to Neutron we have to add Kevin's switch control work.
And the L2VPN descriptions for GRE, L2TPv3, VxLAN, and EVPN.  And whatever
else comes along.  And we get back to 'that's a lot of big changes that
aren't interesting to 90% of Neutron users' - difficult to get in and a lot
of overhead to maintain for the majority of Neutron developers who don't
want or need it.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20141201/28151a67/attachment.html>

More information about the OpenStack-dev mailing list