openstack team mailing list archive

[Dan Wendlandt <dan@xxxxxxxxxx>]

On Fri, Oct 5, 2012 at 4:32 AM, Heinonen, Johanna (NSN - FI/Espoo)
<johanna.heinonen@xxxxxxx> wrote:
> Hi,
>
> I was reading Quantum admin guide (folsom release). There was use case
> “per-tenant routers with private networks”. In this example all floating IPs
> were from the same subnet (30.0.0.0/22).
>
> I was wondering whether it is possible to have several floating IP subnets
> and could one VM have floating IP from all of those? (If I have an
> application that must be reachable from internet via two different
> interfaces with two different IP addresses, can I do it with Quantum?)

Not right now.  With Quantum, a router can only uplink to a single
external network, and you can have at most one floating IP per
external network (otherwise we could not unambiguously apply the
policy of SNAT-ing VM initiated connections to the floating IP).  In
Grizzly, we're planning on making router uplinks more sophisticated,
which will include not only the ability to uplink to multiple networks
with floating IPs, but also uplink to other types of connectivity,
such as an external VPN.

I'll update the admin guide to make this clear.

Dan



>
> Best regards,
>
> Johanna
>
>
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dan Wendlandt
Nicira, Inc: www.nicira.com
twitter: danwendlandt
~~~~~~~~~~~~~~~~~~~~~~~~~~~