[openstack-dev] [neutron][dvr][fip] router support two external network

Irena Berezovsky irenab.dev at gmail.com
Sun Nov 13 11:38:57 UTC 2016

The case you are describing may be related to the previously discussed RFE
Having additional networks with FIP range attached via router interface
should be allowed from the API point of view, but may need some adaptations
to make it work properly. Please see the details in the discussion log [1].

[1]  https://bugs.launchpad.net/neutron/+bug/1566191


On Sun, Nov 13, 2016 at 12:35 PM, Gary Kotton <gkotton at vmware.com> wrote:

> Hi,
> Today the mapping is 1:1. So if you want additional mappinsg to internal
> networks then you can define more than one interface on your instance. Then
> map each interface to the relevant network.
> Thanks
> Gary
> *From: *huangdenghui <hdh_1983 at 163.com>
> *Reply-To: *OpenStack List <openstack-dev at lists.openstack.org>
> *Date: *Saturday, November 12, 2016 at 10:26 AM
> *To: *OpenStack List <openstack-dev at lists.openstack.org>
> *Subject: *[openstack-dev] [neutron][dvr][fip] router support two
> external network
> Hi all
>     Currently, neutron model supports one router with one external
> network, which is used to connect router to outside world. FIP can be
> allocated from external network which is gateway of a router. One private
> fixed ip of one port(usually it is a vm port ) can only associate one
> floating ip.  In some deployment scenario, all ports served by one router,
> all ports need ip address which can be accessed by intranet, and some ports
> need ip address which can be accessed by internet. I was wondering how
> neutron to resolve this kind of use cases? One idea is one router support
> two external network(one for intranet, the other one for internet, but only
> have gateway), the other idea is one router still have only one external
> network, but this external have two different type of subnet (one for
> internet, the other one for intranet). any comment is welcome. thanks.
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