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Using both neutron and legacy on the same os cloud

asked 2016-08-21 09:07:09 -0500

bardhi232 gravatar image


We are deploying an OpenStack cloud and we would like to be able to use both neutron networking and legacy networking with VLANs. I would like to know if that is possible and if maybe that could be applied in different regions. I mean to have a region with Neutron networking and another region with Legacy networking. If that cannot be done is it possible to have 2 different controllers for each deployment and be able to like use both on the same interface?

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answered 2016-08-21 10:53:21 -0500

updated 2016-08-21 10:59:32 -0500

you could have both "neutron networking" and legacy with VLANs, for example if you are using neutron with openvswitch, you could have only on controller br-ex with access to external network, and also you could create a new ovs bridge, for example br-vlan, both on controllers and on nova-compute nodes.

some hints:

  • on controllers

on file /etc/neutron/plugins/ml2/ml2_conf.ini

type_drivers = local,flat,vlan,gre,vxlan
tenant_network_types = vxlan 
network_vlan_ranges =physnet1:1:512,physnet-vlan:3000:3300 

on file /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini


on file /etc/neutron/l3-agent.ini

external_network_bridge =
  • on nova-compute

on file /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini


Remember to create a new OVS bridge br-vlan!

HTH Amedeo

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Thank you. I followed your instructions and it worked. I am using Linux Bridge so my configuration was slightly different but the idea of that is the same. Thanks again.

bardhi232 gravatar imagebardhi232 ( 2016-08-23 03:22:58 -0500 )edit

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Asked: 2016-08-21 09:07:09 -0500

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Last updated: Aug 21 '16