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Somewhat related: Sharing of networks between tenants has also come up in the discussions on trunk support; One use case there is , a VM VIF is plugged to multiple networks at the same time and packets are VLAN tagged (visible to the VM) to separate those networks. For usage with service VMs it is desirable that those networks can belong to different tenants.

BP is here:https://blueprints.launchpad.net/neutron/+spec/vlan-aware-vms
There is also a thread 'VLAN aware VMs' on this email list about this.

Thanks,
Bob

From: Salvatore Orlando <sorlando at nicira.com<mailto:sorlando at nicira.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>>
Date: söndag 3 november 2013 21:20
To: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>>
Subject: Re: [openstack-dev] [Neutron] Shared network between specific tenants, but not all tenants?

This blueprint is related (the concept stands for any network, not just externals): https://blueprints.launchpad.net/neutron/+spec/sharing-model-for-external-networks

You can read the blueprint and spec pages for some context.
Bottom line is that it would be great to have some feedback on whether you reckon this:
i) a RBAC problem, which should be enhanced in order to "delegate" access to network resources thus enabling a tenant to select with which tenants a network should be shared
ii) a network topology problem, meaning that we don't really care about whether there's a single shared network segment or not, as long as there is a possibility to provide a CIDR which is routable by different tenants.

Regards,
Salvatore


On 29 October 2013 22:20, Mike Wilson <geekinutah at gmail.com<mailto:geekinutah at gmail.com>> wrote:
+1

I also have tenants asking for this :-). I'm interested to see a blueprint.

-Mike


On Tue, Oct 29, 2013 at 1:24 PM, Jay Pipes <jaypipes at gmail.com<mailto:jaypipes at gmail.com>> wrote:
On 10/29/2013 02:25 PM, Justin Hammond wrote:
We have been considering this and have some notes on our concept, but we
haven't made a blueprint for it. I will speak amongst my group and find
out what they think of making it more public.

OK, cool, glad to know I'm not the only one with tenants asking for this :)

Looking forward to a possible blueprint on this.

Best,
-jay


On 10/29/13 12:26 PM, "Jay Pipes" <jaypipes at gmail.com<mailto:jaypipes at gmail.com>> wrote:

Hi Neutron devs,

Are there any plans to support networks that are shared/routed only
between certain tenants (not all tenants)?

Thanks,
-jay

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