Initial commit of Sphinx docs

Change-Id: I9fca8fb98502dffc2555f9de7f507b6f006e0e77
Signed-off-by: John DeNisco <jdenisco@cisco.com>

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+.. _vswitch:
+
+.. toctree::
+
+.. _vswitchrtr:
+
+vSwitch/vRouter
+===============
+
+
+FD.io VPP as a vSwitch/vRouter
+------------------------------
+
+.. note::
+
+   We need to provide commands and and show how to use VPP as a vSwitch/vRouter
+
+One of the use cases for the FD.io VPP platform is to implement it as a
+virtual switch or router. The following section describes examples of
+possible implementations that can be created with the FD.io VPP platform. For
+more in depth descriptions about other possible use cases, see the list
+of 
+
+.. figure:: /_images/VPP_App_as_a_vSwitch_x201.jpg
+   :alt: Figure: Linux host as a vSwitch
+   :align: right
+
+   Figure: Linux host as a vSwitch
+
+You can use the FD.io VPP platform to create out-of-the-box virtual switches
+(vSwitch) and virtual routers (vRouter). The FD.io VPP platform allows you to
+manage certain functions and configurations of these application through
+a command-line interface (CLI).
+
+Some of the functionality that a switching application can create
+includes:
+
+* Bridge Domains
+* Ports (including tunnel ports)
+* Connect ports to bridge domains
+* Program ARP termination
+
+Some of the functionality that a routing application can create
+includes:
+
+* Virtual Routing and Forwarding (VRF) tables (in the thousands)
+* Routes (in the millions)