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Question about neutron openvswitch agent and gre

Hi. I'm using neutron (with a dedicated network node) with openvswitch agent and gre. My initial configuration was 1 node for controller, 1 for network and 1 for compute. Next I added a new compute node. When i launch a new instance on the first compute node, i can see on this node 4 new interfaces: tap, qbr, qvb and qvo. Moreover, i have a new qvo port (with a vlan tag) in the integration bridge (with ovs-vsctl show). On the second compute node i have a different behavior: when i launch an instance, i only see a new tap interface and a new port (with a tap interface) in the integration bridge. Vlan tags are the same (beacuse the instances are in the same network). But... is this correct? Should i have 4 new interfaces on the second compute node? If this is correct.... Why it is? Thanks

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Question about neutron openvswitch agent Missing qbr, qvb and greqvo devices on compute node with ovs agent

Hi. I'm using neutron (with a dedicated network node) with openvswitch agent and gre. My initial configuration was 1 node for controller, 1 for network and 1 for compute. Next I added a new compute node. When i launch a new instance on the first compute node, i can see on this node 4 new interfaces: tap, qbr, qvb and qvo. Moreover, i have a new qvo port (with a vlan tag) in the integration bridge (with ovs-vsctl show). On the second compute node i have a different behavior: when i launch an instance, i only see a new tap interface and a new port (with a tap interface) in the integration bridge. Vlan tags are the same (beacuse the instances are in the same network). But... is this correct? Should i have 4 new interfaces on the second compute node? If this is correct.... Why it is? Thanks