Ovs-tunnel-partial-mesh

when a port is created in a network backed with GRE tunnel, a RPC call will be send to the plugin to provision the association between tunnel endpoint and segmentation ID. Then the plugin will return every endpoints associated with this segmentation ID. The plugin will also send a RPC to every agent which own this segmentation ID, to tell them that a new agent have a port in this network.

https://docs.google.com/drawings/d/1Pn1rOiUF6CUmd2VP7da8Tn7omTveJYITqhN4T1XjXuQ