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Overview
========
Virtual Topologies
------------------
CSIT NSH_SFC functional tests are executed in VM-based virtual
topologies created on demand using :abbr:`VIRL (Virtual Internet Routing
Lab)` simulation platform contributed by Cisco. VIRL runs on physical
baremetal servers hosted by LF FD.io project. All tests are executed in
three-node virtual test topology shown in the figure below.
.. only:: latex
.. raw:: latex
\begin{figure}[H]
\centering
\graphicspath{{../_tmp/src/vpp_functional_tests/}}
\includegraphics[width=0.90\textwidth]{virtual-3n-nic2nic}
\label{fig:virtual-3n-nic2nic}
\end{figure}
.. only:: html
.. figure:: ../vpp_functional_tests/virtual-3n-nic2nic.svg
:alt: virtual-3n-nic2nic
:align: center
SUT1 and SUT2 are two VMs (running Ubuntu or Centos, depending on the
test suite), TG is a Traffic Generator (running Ubuntu VM). SUTs run VPP
with nsh-plugin in Linux user-mode as a Device Under Test (DUT) within
the VM. TG runs Scapy SW application as a packet Traffic Generator.
Network connectivity between SUTs and to TG is provided using virtual
NICs and VMs' virtio drivers.
Functional Tests Coverage
-------------------------
|csit-release| includes following NSH_SFC functionality tested in
virtual VM environment:
+-----------------------+----------------------------------------------+
| Functionality | Description |
+=======================+==============================================+
| NSH SFC Classifier | TG sends some TCP packets to test NSH SFC |
| | Classifier functional. DUT1 will receive |
| | these packets from one NIC and loopback the |
| | VXLAN-GPE-NSH encapsulated packets to the TG |
| | from other NIC. |
| | Test case count: 7. |
+-----------------------+----------------------------------------------+
| NSH SFC Proxy Inbound | TG sends some VXLAN-GPE-NSH encapsulated |
| | packets to test NSH SFC Proxy Inbound |
| | functional. DUT1 will receive these packets |
| | from one NIC and loopback the VXLAN |
| | encapsulated packets to the TG from other |
| | NIC. |
| | Test case count: 6. |
+-----------------------+----------------------------------------------+
| NSH SFC Proxy | TG sends some VXLAN encapsulated packets to |
| Outbound | test NSH SFC Proxy Outbound functional. DUT1 |
| | will receive these packets from one NIC and |
| | loopback the VXLAN-GPE-NSH encapsulated |
| | packets to the TG from other NIC. |
| | Test case count: 6. |
+-----------------------+----------------------------------------------+
| NSH SFC Service | TG sends some VXLAN-GPE-NSH |
| Function Forward | encapsulated packets to test NSH SFC Service |
| | Function Forward functional. DUT1 will |
| | receive these packets from one NIC and swap |
| | the VXLAN-GPE-NSH header, after that DUT1 |
| | loopback the VXLAN-GPE-NSH encapsulated |
| | packets to the TG from other NIC. |
| | Test case count: 6. |
+-----------------------+----------------------------------------------+
Total 25 NSH_SFC functional tests in the |csit-release|.
|
