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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1288393

Title:
  Nexus ML2 mechanism driver need to specify multiple interfaces per
  host

Status in OpenStack Neutron (virtual network service):
  Fix Released

Bug description:
  There are some L2 topologies in which traffic from a physical server
  can come into multiple interfaces on the ToR switch configured by the
  Nexus plugin.  In the case of server directly attached to ToR, this is
  easily taken care of by by port-channel/bonding.  However, if an
  intermediary device (e.g. Cisco UCS Fabric Interconnect) is placed
  between the server and the Top of Rack switch, then server traffic has
  the possibility of coming into multiple interfaces on the same switch.
  So the user needs to be able to specify multiple interfaces per host.

  Currently the plugin stores the information in a dictionary defined like this:
    device_dictionary[dev_id, dev_ip, dev_key] = value[0]

  In this setup, specifying a second interface would just overwrite the
  first.  We need to either make the dictionary key include the
  interface, or make the value of the current dictionary key a list
  instead of single item.

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