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.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. (c) Bin Hu (AT&T) and Sridhar Gaddam (RedHat)

==============================================
IPv6 Gap Analysis with Open Daylight Beryllium
==============================================

This section provides users with IPv6 gap analysis regarding feature requirement with
Open Daylight Beryllium Official Release. The following table lists the use cases / feature
requirements of VIM-agnostic IPv6 functionality, including infrastructure layer and VNF
(VM) layer, and its gap analysis with Open Daylight Beryllium Official Release.

.. table::
  :class: longtable

  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |Use Case / Requirement                                       |Supported in ODL Beryllium|Notes                                                                     |
  +=============================================================+==========================+==========================================================================+
  |REST API support for IPv6 subnet creation in ODL             |Yes                       |Yes, it is possible to create IPv6 subnets in ODL using Neutron REST API. |
  |                                                             |                          |                                                                          |
  |                                                             |                          |For a network which has both IPv4 and IPv6 subnets, ODL mechanism driver  |
  |                                                             |                          |will send the port information which includes IPv4/v6 addresses to ODL    |
  |                                                             |                          |Neutron northbound API. When port information is queried it displays IPv4 |
  |                                                             |                          |and IPv6 addresses. However, in Beryllium release, ODL net-virt provider  |
  |                                                             |                          |does not support IPv6 features (i.e., the actual functionality is missing |
  |                                                             |                          |and would be available only in the later releases of ODL).                |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |IPv6 Router support in ODL                                   |**No**                    |ODL net-virt provider in Beryllium release only supports IPv4 Router.     |
  |                                                             |                          |                                                                          |
  |1. Communication between VMs on same compute node            |                          |In the meantime, if IPv6 Routing is necessary, we can use ODL for L2      |
  |2. Communication between VMs on different compute nodes      |                          |connectivity and Neutron L3 agent for IPv4/v6 routing.                    |
  |   (east-west)                                               |                          |                                                                          |
  |3. External routing (north-south)                            |                          |                                                                          |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |IPAM: Support for IPv6 Address assignment modes.             |**No**                    |Although it is possible to create different types of IPv6 subnets in ODL, |
  |                                                             |                          |ODL_L3 would have to implement the IPv6 Router that can send out Router   |
  |1. SLAAC                                                     |                          |Advertisements based on the IPv6 addressing mode. Router Advertisement    |
  |2. DHCPv6 Stateless                                          |                          |is also necessary for VMs to configure the default route.                 |
  |3. DHCPv6 Stateful                                           |                          |                                                                          |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |When using ODL for L2 forwarding/tunneling, it is compatible |Yes                       |                                                                          |
  |with IPv6.                                                   |                          |                                                                          |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |Full support for IPv6 matching (i.e., IPv6, ICMPv6, TCP, UDP)|**No**                    |Security Groups for IPv6 is a work in progress.                           |
  |in security groups. Ability to control and manage all IPv6   |                          |                                                                          |
  |security group capabilities via Neutron/Nova API (REST and   |                          |                                                                          |
  |CLI) as well as via Horizon.                                 |                          |                                                                          |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |Shared Networks support                                      |**No**                    |ODL currently assumes a single tenant to network mapping and does not     |
  |                                                             |                          |support shared networks among tenants.                                    |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |IPv6 external L2 VLAN directly attached to a VM.             |**ToDo**                  |                                                                          |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+
  |ODL on an IPv6 only Infrastructure.                          |**ToDo**                  |Deploying OpenStack with ODL on an IPv6 only infrastructure where the API |
  |                                                             |                          |endpoints are all IPv6 addresses.                                         |
  +-------------------------------------------------------------+--------------------------+--------------------------------------------------------------------------+