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[Akihiro Motoki <1278349@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

nec plugin deletes and recreate a OFC port unexpectedly when update_port from dhcp-agent
even though there is no actual changes in OpenFlow port information (datapath_id and port number).

It is caused by normalization of datapath_id is different between when plugin.update_port is called and when portinfo upadte is notified from nec-plugin-agent. As a result, nec-plugin will mis-recognize datapath_id is changed and recreate a port on OpenFlow controller. This leads to unexpected temporary outage of a dhcp port.
The same normalization method should be used for both case.

** Affects: neutron
     Importance: Medium
     Assignee: Akihiro Motoki (amotoki)
         Status: New


** Tags: nec

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https://bugs.launchpad.net/bugs/1278349

Title:
  nec plugin deletes and recreate a OFC port unexpectedly when
  update_port from dhcp-agent.

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  nec plugin deletes and recreate a OFC port unexpectedly when update_port from dhcp-agent
  even though there is no actual changes in OpenFlow port information (datapath_id and port number).

  It is caused by normalization of datapath_id is different between when plugin.update_port is called and when portinfo upadte is notified from nec-plugin-agent. As a result, nec-plugin will mis-recognize datapath_id is changed and recreate a port on OpenFlow controller. This leads to unexpected temporary outage of a dhcp port.
  The same normalization method should be used for both case.

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