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Dual public network

asked 2014-06-20 03:45:32 -0500

alini76 gravatar image

updated 2014-06-25 11:47:16 -0500


My internal network has the IPs and my first server for OpenStack (I choose an Oracle Enterprise Linux) has one single network card with the IP and router I have a routable subnet 86.x.x.32/27 used for my external public servers, the router having 86.x.x.33. This OpenStack deployment will be used to install my own servers for testing and production.

What is the right configuration that I should use for such network configuration which will allow internal computers to access the servers using the IPs from AND for public external servers to be accessible world-wide.

I installed a minimal Fedora 20 and I configured as p12p1 and 86.x.x.34 as p14p1 I used the packstack --allinone --provision-all-in-one-ovs-bridge=n command for installation... and then I setup a bridge for p12p1 as mentioned here: (

I configured a second floating external network, configuring as well a secondary bridge. Now I tried to allocate IP from public network or external network to the machines, but it did not work.

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Obviously that is the controller host

alini76 gravatar imagealini76 ( 2014-06-20 05:07:54 -0500 )edit

Could you supply us with a little more info on your installation. Do you use a flat network? Or GRE or VLAN?

atze.devries gravatar imageatze.devries ( 2014-06-20 12:42:47 -0500 )edit

Hello Atze.Devries !

Thanks a lot for your reply. Actually this is my question. What should I use? I am kind of newbie on GRE/VLAN. I just want to be able to access my instances through 192.168.50.x somehow and to be able to assign to some of the instances routable IPs 86.x.x.x

Many thanks ! Alin

alini76 gravatar imagealini76 ( 2014-06-20 13:39:55 -0500 )edit

Currently I setup 86.x.x.34 as eth0:0, but I think that a real nic is needed. I can add, but my question would be what happens for next nodes that I want to add?

Thanks a lot ! Alin

alini76 gravatar imagealini76 ( 2014-06-20 15:22:46 -0500 )edit

Edit the question and avoid entertaing in discussions using the comments. The questions are better answered when all the details are ther. This is not a forum to learn more about how to use this site.

smaffulli gravatar imagesmaffulli ( 2014-06-20 15:56:36 -0500 )edit

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answered 2014-06-20 14:25:38 -0500

atze.devries gravatar image

would it be possible to add more networkcards to you openstack server? The best solution i think would be to have two floating ip pools (one in 192 and one in 86). I think this should be possible. You can seperate you network traffic using GRE. Here is info on multipe floating ips (

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Asked: 2014-06-20 03:45:32 -0500

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Last updated: Jun 25 '14