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[Alessandro Pilotti <1361211@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

This issue affects Hyper-V 2008 R2 and does not affect Hyper-V 2012 and
above.

The Hyper-V agent is correctly setting the VLAN ID and access mode
settings on the vmswitch ports associated with a VM, but not on the
trunked list associated with an external port. This is a required
configuration.

A workaround consists in setting the external port trunked list to
contain all possible VLAN ids expected to be used in neutron's network
configuration as provided by the following script:

https://github.com/cloudbase/devstack-hyperv-
incubator/blob/master/trunked_vlans_workaround_2008r2.ps1

** Affects: neutron
     Importance: Undecided
         Status: Confirmed


** Tags: hyper-v

** Changed in: neutron
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1361211

Title:
  Hyper-V agent does not add new VLAN ids to the external port's trunked
  list on Hyper-V 2008 R2

Status in OpenStack Neutron (virtual network service):
  Confirmed

Bug description:
  This issue affects Hyper-V 2008 R2 and does not affect Hyper-V 2012
  and above.

  The Hyper-V agent is correctly setting the VLAN ID and access mode
  settings on the vmswitch ports associated with a VM, but not on the
  trunked list associated with an external port. This is a required
  configuration.

  A workaround consists in setting the external port trunked list to
  contain all possible VLAN ids expected to be used in neutron's network
  configuration as provided by the following script:

  https://github.com/cloudbase/devstack-hyperv-
  incubator/blob/master/trunked_vlans_workaround_2008r2.ps1

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