+SUT and TG NICs:
+
+#. NIC-1: xxv710-DA2 2p25GE Intel.
+#. NIC-2: E810-2CQDA2 2p100GbE Intel (* to be added).
+#. NIC-3: E810-CQDA4 4p100GbE Intel (* to be added).
+
+All Intel Xeon Icelake servers run with Intel Hyper-Threading enabled,
+doubling the number of logical cores exposed to Linux.
+
+.. _physical_testbeds_3n_icx:
+
+3-Node Xeon Icelake (3n-icx)
+----------------------------
+
+One 3n-icx testbed is in operation in FD.io labs. It is built with three
+SuperMicro SYS-740GP-TNRT servers, each in turn equipped with two Intel Xeon
+Platinum 8358 processors (48 MB Cache, 2.60 GHz, 32 cores).
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \graphicspath{{../_tmp/src/introduction/}}
+ \includegraphics[width=0.90\textwidth]{testbed-3n-icx}
+ \label{fig:testbed-3n-icx}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: testbed-3n-icx.svg
+ :alt: testbed-3n-icx
+ :align: center
+
+SUT and TG NICs:
+
+#. NIC-1: xxv710-DA2 2p25GE Intel.
+#. NIC-2: E810-2CQDA2 2p100GbE Intel (* to be added).
+#. NIC-3: E810-CQDA4 4p100GbE Intel (* to be added).
+
+All Intel Xeon Icelake servers run with Intel Hyper-Threading enabled,
+doubling the number of logical cores exposed to Linux.
+
+.. _physical_testbeds_2n_dnv:
+
+2-Node Atom Denverton (2n-dnv)
+------------------------------
+
+2n-dnv testbed is built with: i) one Intel S2600WFT server acting as TG
+and equipped with two Intel Xeon Skylake Platinum 8180 processors (38.5
+MB Cache, 2.50 GHz, 28 cores), and ii) one SuperMicro SYS-E300-9A server
+acting as SUT and equipped with one Intel Atom C3858 processor (12 MB
+Cache, 2.00 GHz, 12 cores). 2n-dnv physical topology is shown below.
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \graphicspath{{../_tmp/src/introduction/}}
+ \includegraphics[width=0.90\textwidth]{testbed-2n-dnv}
+ \label{fig:testbed-2n-dnv}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: testbed-2n-dnv.svg
+ :alt: testbed-2n-dnv
+ :align: center
+
+SUT 10GE NIC ports:
+
+#. P-1: x553 copper port.
+#. P-2: x553 copper port.
+#. P-3: x553 fiber port.
+#. P-4: x553 fiber port.
+
+TG NICs:
+
+#. NIC-1: x550-T2 2p10GE Intel.
+#. NIC-2: x550-T2 2p10GE Intel.
+#. NIC-3: x520-DA2 2p10GE Intel.
+#. NIC-4: x520-DA2 2p10GE Intel.
+
+The 2n-dnv testbed is in operation in Intel SH labs.
+
+.. _physical_testbeds_3n_dnv:
+
+3-Node Atom Denverton (3n-dnv)
+------------------------------
+
+One 3n-dnv testbed is built with: i) one SuperMicro SYS-7049GP-TRT
+server acting as TG and equipped with two Intel Xeon Skylake Platinum
+8180 processors (38.5 MB Cache, 2.50 GHz, 28 cores), and ii) one
+SuperMicro SYS-E300-9A server acting as SUT and equipped with one Intel
+Atom C3858 processor (12 MB Cache, 2.00 GHz, 12 cores). 3n-dnv physical
+topology is shown below.
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \graphicspath{{../_tmp/src/introduction/}}
+ \includegraphics[width=0.90\textwidth]{testbed-3n-dnv}
+ \label{fig:testbed-3n-dnv}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: testbed-3n-dnv.svg
+ :alt: testbed-3n-dnv
+ :align: center
+
+SUT1 and SUT2 NICs:
+
+#. NIC-1: x553 2p10GE fiber Intel.
+#. NIC-2: x553 2p10GE copper Intel.
+
+TG NICs: