Open Stack

Hi Ian,

Ian Wells :
>
> When you say things like 'tenant = VRF' (and, in fact, I presume you 
> mean 'network = VRF', since networks and tenants are two different 
> things) then that's actually more to do with how you implement the 
> networking overlay layer in Neutron.  While interesting, and while it 
> could potentially use a BGP speaker and VRFs to do it, it's not the 
> same use case as advertising routes externally, or terminating an 
> external MPLS VPN in Openstack.  I could do either of those things 
> independently of the other. Terminating VPNs requires an extension API 
> and could potentially glue on to a current plugin (much like VPNaaS). 
> Writing overlays is a new plugin entirely.

Indeed.

>
> There's a use for BGP speakers in both arenas (and additionally within 
> the distributed virtual router, which is a third case) so perhaps we 
> could address who's using which speaker for precisely what?

We plan to propose an implementation of the BGP VPN interconnection API 
( https://review.openstack.org/#/c/93329/1 ) that will use BaGPipe BGP 
for IP VPN VRF.
And we are also working on a mechanism driver that will use BaGPipe BGP 
and E-VPN/VXLAN.

Best,

-Thomas
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