Hi Neutron team, I am currently working on a feature for hierarchical port binding support in Manila [1] [2]. Just to give some context: In the current implementation Manila creates a neutron port but let it unbound (state DOWN). Therefore Manila uses the port create only retrieve an IP address and segmentation ID (some drivers only support VLAN here). My idea is to change this behavior and do an actual port binding action so that the configuration of VLAN isn’t a manual job any longer. And that multi-segment and HPB is supported on the long-run. My current issue is: How can Manila retrieve the segment information for a bound port? Manila only is interested in the last (bottom) segmentation ID since I assume the storage is connected to a ToR switch. Database-wise it’s possible to query it using ml2_port_binding_levels table. But AFAIK there is no API to query this. The only information that is exposed are all segments of a network. But this is not sufficient to identify which segments actually used for a port binding. Regards Marc SAP SE [1]: https://wiki.openstack.org/wiki/Manila/design/manila-newton-hpb-support <https://wiki.openstack.org/wiki/Manila/design/manila-newton-hpb-support> [2]: https://review.openstack.org/#/c/277731/ <https://review.openstack.org/#/c/277731/> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20160229/d4840305/attachment.html>