diff --git a/docs/scenarios/os-nosdn-fdio-noha/scenario.description.rst b/docs/scenarios/os-nosdn-fdio-noha/scenario.description.rst
index e4e17b2..031cd8f 100755
@@ -1,5 +1,6 @@
.. OPNFV - Open Platform for Network Function Virtualization
-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. This work is licensed under a Creative Commons Attribution 4.0
+.. International License.
Scenario: "OpenStack - FD.io"
@@ -47,9 +48,10 @@ Tenant networking leverages FD.io/VPP. Open VSwitch (OVS) is used for all other
connectivity, in particular the connectivity to public networking / the
Internet (i.e. br-ext) is performed via OVS as in any standard OpenStack
deployment. A VPP management agent is used to setup and manage layer 2
-networking for the scenario. Tenant networking can either leverage VLANs or
-plain interfaces. Layer 3 connectivity for a tenant network is provided
-centrally via qrouter on the control node. As in a standard OpenStack
+networking for the scenario. Neutron ML2 plugin is configured to use
+the ML2-VPP networking mechanism driver. Tenant networking can either leverage
+VLANs or plain interfaces. Layer 3 connectivity for a tenant network is
+provided centrally via qrouter on the control node. As in a standard OpenStack
deployment, the Layer3 agent configures the qrouter and associated rulesets for
security (security groups) and NAT (floating IPs). Public IP network
connectivity for a tenant network is provided by interconnecting the VPP-based
@@ -68,7 +70,9 @@ Main features of the "apex-os-odl_l2-fdio-noha" scenario:
* Layer 3 connectivitiy for tenant networks supplied centrally
on the Control node through standard OpenStack mechanisms.
All layer 3 features apply, including floating IPs (i.e. NAT)
- and security groups.
+ and security groups
+ * DHCP server for tenant instances provided using the standard
+ OpenStack dnsmasq server
Networking in this scenario using VPP
@@ -80,7 +84,8 @@ light-weight control plane agent for VPP forwarder has been created. For
details see also https://github.com/naveenjoy/networking-vpp/
Networking-vpp provides a Neutron ML2 mechanism driver to bring the advantages
-of VPP to OpenStack deployments.
+of VPP to OpenStack deployments.It uses an etcd cluster on the control node to
+keep track of the compute nodes, agent state and port bindings/unbindings.
It's been written to be as simple and readable as possible, which means it's
naive; the aim was not to write the most efficient mechanism driver ever from