cloudstack kvm openvswitch

[Ignazio Cassano]

Hi all,
I would like to install a new cloudstack infrastracture with kvm nodes but
I also would like to use OVS to configure guests vlan avoiding to configure
them on
physical switches.
I am planning to user three kvm nodes but I do not know how prepare them to
use OVS: must I create a gre tunnel between nodes ?
Regards