[Openstack-operators] Implement OS using existing network setup

Robert van Leeuwen Robert.vanLeeuwen at spilgames.com
Tue Jul 30 14:45:36 UTC 2013

> We have a rather complex network setup where our HP BL460c G8's have multiple VLAN's assigned and bridges already
 > created per VLAN. Would like to setup a new HP BL460c G8 using OpenStack and mirror the network setup, looks like
 > Quantum+OVS would be the logical choice but not sure how one would  use OVS with existing bridges. 
> All of the examples I have seen build up the bridge and assign the port which in the end executes the
> required OS commands to build out the network. How would one go about setting up OpenStack networking to utilizing existing network configuration?


I would use use bridge_mapped networks and let Neutron / OVS handle everything.
When you create the bridge mapped network in Neutron you can specify which VLAN ID you would like to use by using:
--provider:segmentation_id $VLAN-ID 
This way you can map your Neutron network to an existing VLAN.
Neutron will make sure the OpenVswitch will tag the packets to the appropriate VLAN.

Robert van Leeuwen

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