+SUT and TG servers are equipped with a number of different NIC models.
+
+VPP is performance tested on SUTs with the following NICs and drivers:
+
+#. 2p10GE: x550, x553 Intel (codename Niantic)
+ - DPDK Poll Mode Driver (PMD).
+#. 4p10GE: x710-DA4 Intel (codename Fortville, FVL)
+ - DPDK PMD.
+ - AVF in PMD mode.
+ - AF_XDP in PMD mode.
+#. 2p25GE: xxv710-DA2 Intel (codename Fortville, FVL)
+ - DPDK PMD.
+ - AVF in PMD mode.
+ - AF_XDP in PMD mode.
+#. 2p100GE: cx556a-edat Mellanox ConnectX5
+ - RDMA_core in PMD mode.
+#. 2p100GE: E810-2CQDA2 Intel (codename Columbiaville, CVL)
+ - DPDK PMD.
+ - AVF in PMD mode.
+
+DPDK applications, testpmd and l3fwd, are performance tested on the same
+SUTs exclusively with DPDK drivers for all NICs.
+
+TRex running on TGs is using DPDK drivers for all NICs.
+
+VPP hoststack tests utilize ab (Apache HTTP server benchmarking tool)
+running on TGs and using Linux drivers for all NICs.
+
+For more information see :ref:`vpp_test_environment`
+and :ref:`dpdk_test_environment`.
+
+2-Node AMD EPYC Zen2 (2n-zn2)
+-----------------------------
+
+One 2n-zn2 testbed in in operation in FD.io labs. It is built based on
+two SuperMicro SuperMicro AS-1114S-WTRT servers, with SUT and TG servers
+equipped with one AMD EPYC Zen2 7532 processor each (256 MB Cache, 2.40
+GHz, 32 cores). 2n-zn2 physical topology is shown below.
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \graphicspath{{../_tmp/src/introduction/}}
+ \includegraphics[width=0.90\textwidth]{testbed-2n-zn2}
+ \label{fig:testbed-2n-zn2}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: testbed-2n-zn2.svg
+ :alt: testbed-2n-zn2
+ :align: center
+
+SUT NICs:
+
+#. NIC-1: x710-DA4 4p10GE Intel.
+#. NIC-2: xxv710-DA2 2p25GE Intel.
+#. NIC-3: cx556a-edat ConnectX5 2p100GE Mellanox.
+
+TG NICs:
+
+#. NIC-1: x710-DA4 4p10GE Intel.
+#. NIC-2: xxv710-DA2 2p25GE Intel.
+#. NIC-3: cx556a-edat ConnectX5 2p100GE Mellanox.
+
+All AMD EPYC Zen2 7532 servers run with AMD SMT enabled, doubling the
+number of logical cores exposed to Linux.
+
+2-Node Xeon Cascadelake (2n-clx)
+--------------------------------