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Hi,

Yes, that should be possible. You can create 4 bridges on compute node and add all of them to bridge_mappings config option.
Then You can create 4 networks with different physical_network for each of them and agent will know which bridge should be used for ports from each network.
It is described e.g. in [1].

[1] https://ask.openstack.org/en/question/94206/how-to-understand-the-bridge_mappings/?answer=94230#post-id-94230

> Wiadomo?? napisana przez Soheil Pourbafrani <soheil.ir08@gmail.com> w dniu 21.11.2018, o godz. 12:08:
>
> Hi,
>
> I installed OpenStack on One node (for test) and creating a flat external network I could connect VMs to the provider network (internet).
>
> In the production environment, we have 4 NIC on each server and each server (compute node) will run 4 instances. My question is, is it possible to create a separate external network based on each NIC (so 4 external networks) and run each instance using one of them?
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—
Slawek Kaplonski
Senior software engineer
Red Hat


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Thanks a lot.

On Wed, Nov 21, 2018 at 2:51 PM Slawomir Kaplonski <skaplons@redhat.com>
wrote:

> Hi,
>
> Yes, that should be possible. You can create 4 bridges on compute node and
> add all of them to bridge_mappings config option.
> Then You can create 4 networks with different physical_network for each of
> them and agent will know which bridge should be used for ports from each
> network.
> It is described e.g. in [1].
>
> [1]
> https://ask.openstack.org/en/question/94206/how-to-understand-the-bridge_mappings/?answer=94230#post-id-94230
>
> > Wiadomo?? napisana przez Soheil Pourbafrani <soheil.ir08@gmail.com> w
> dniu 21.11.2018, o godz. 12:08:
> >
> > Hi,
> >
> > I installed OpenStack on One node (for test) and creating a flat
> external network I could connect VMs to the provider network (internet).
> >
> > In the production environment, we have 4 NIC on each server and each
> server (compute node) will run 4 instances. My question is, is it possible
> to create a separate external network based on each NIC (so 4 external
> networks) and run each instance using one of them?
> > _______________________________________________
> > Mailing list:
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
> > Post to : openstack@lists.openstack.org
> > Unsubscribe :
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>
> —
> Slawek Kaplonski
> Senior software engineer
> Red Hat
>
>