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.
+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
| | 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 |
| | 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 |
| | 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 |
| | 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. |
+-----------------------+----------------------------------------------+