====================
Architectural Design
====================

The architectural design of using a service VM as an IPv6 vRouter is
shown as follows in :numref:`arch-figure1`:

.. figure:: images/ipv6-architecture.png
   :name: arch-figure1
   :width: 100%

   Architectural Design of Using a VM as an IPv6 vRouter

This design applies to deployment model of single controller node as well as HA (High Availability)
deployment model of multiple controller nodes.