[Openstack-operators] [Large deployments] Openstack Large deployment using DVR

Fox, Kevin M Kevin.Fox at pnnl.gov
Tue Nov 1 15:49:46 UTC 2016

We're running dvr on one of our clouds. ~70 hypervisors currently and more getting ready to join. We have not played with dvr+l3ha as it was unstable at the time but once there is a migration path, we would like to go there.

So far, DVR has seemed pretty stable and is performing well.

From: Clayton O'Neill [clayton at oneill.net]
Sent: Tuesday, November 01, 2016 6:18 AM
To: Satyanarayana Patibandla
Cc: openstack-operators at lists.openstack.org
Subject: Re: [Openstack-operators] [Large deployments] Openstack Large deployment using DVR

On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
<satya.patibandla at gmail.com> wrote:
> We are planning for a new Openstack large deployment ( Around 25 K VMs). For
> external routing we want to use DVR for instances with floating IP and
> Network node L3 agent for instances with private IP. Our deployment is DVR
> with L3 HA.It seems still many people not yet started using DVR in
> production for large deployments. Did anyone use DVR in their Large/Medium
> production deployment. If you can share your experiences that will be
> helpful to us and that will save most of our time.

I've asked this question in operator sessions at the Summits and at
the NYC operators mid-cycle with not much response.  In the Neutron
feedback session last week, there was one person that said he was
running DVR, but that it had architectural issues with IPv6.  I got
the impression that his environment was much smaller than what you're

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