Added missing file

docs: Incorporate Javier's progressive VPP tutorial

Change-Id: Iecee041039c7ed81713bc0530fc536e989c71497
Signed-off-by: John DeNisco <jdenisco@cisco.com>

docs/guides/progressivevpp/routing.rst

@@ -0,0 +1,71 @@
+.. _routing:
+
+.. toctree::
+
+Routing
+=======
+
+Skills to be Learned
+^^^^^^^^^^^^^^^^^^^^
+
+In this exercise you will learn these new skills:
+
+#. Add route to Linux Host routing table
+#. Add route to FD.io VPP routing table
+
+And revisit the old ones:
+
+#. Examine FD.io VPP routing table
+#. Enable trace on vpp1 and vpp2
+#. ping from host to FD.io VPP
+#. Examine and clear trace on vpp1 and vpp2
+#. ping from FD.io VPP to host
+#. Examine and clear trace on vpp1 and vpp2
+
+FD.io VPP command learned in this exercise
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+#. `ip route
+   add <https://docs.fd.io/vpp/17.04/clicmd_src_vnet_ip.html#clicmd_ip_route>`__
+
+Topology
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. figure:: /_images/Connecting_two_vpp_instances_with_memif.png
+   :alt: Connect two FD.io VPP topology
+
+   Connect two FD.io VPP topology
+
+Initial State
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The initial state here is presumed to be the final state from the
+exercise `Connecting two FD.io VPP
+instances <VPP/Progressive_VPP_Tutorial#Connecting_two_vpp_instances>`__
+
+Setup host route
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: console
+
+   $ sudo ip route add 10.10.2.0/24 via 10.10.1.2
+   $ ip route
+   default via 10.0.2.2 dev enp0s3 
+   10.0.2.0/24 dev enp0s3  proto kernel  scope link  src 10.0.2.15 
+   10.10.1.0/24 dev vpp1host  proto kernel  scope link  src 10.10.1.1 
+   10.10.2.0/24 via 10.10.1.2 dev vpp1host 
+
+Setup return route on vpp2
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: console
+
+    vpp# ip route add 10.10.1.0/24  via 10.10.2.1
+
+Ping from host through vpp1 to vpp2
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+#. Setup a trace on vpp1 and vpp2
+#. Ping 10.10.2.2 from the host
+#. Examine the trace on vpp1 and vpp2
+#. Clear the trace on vpp1 and vpp2