docs: Add VPP with iperf and trex

Change-Id: I9f238b6092bc072fd875facfee5262c6b155043e
Signed-off-by: jdenisco <jdenisco@cisco.com>

7 files changed, 554 insertions, 3 deletions

diff --git a/docs/usecases/containers.rst b/docs/usecases/containers.rst
index 90e41db6cb8..65bf2aee5de 100644
--- a/docs/usecases/containers.rst
+++ b/docs/usecases/containers.rst
@@ -1,7 +1,7 @@
 .. _containers:
 
-FD.io VPP with Containers
-=========================
+VPP with Containers
+====================
 
 This section will cover connecting two Linux containers with VPP. A container is essentially a more efficient and faster VM, due to the fact that a container does not simulate a separate kernel and hardware. You can read more about `Linux containers here <https://linuxcontainers.org/>`_.
 
diff --git a/docs/usecases/index.rst b/docs/usecases/index.rst
index 28070453692..e6287f38931 100644
--- a/docs/usecases/index.rst
+++ b/docs/usecases/index.rst
@@ -9,7 +9,8 @@ extensive list, but should give a sampling of the many features contained in FD.
 
 .. toctree::
   
-   contiv/index
    containers
+   simpleperf/index.rst
    vhost/index.rst
    homegateway
+   contiv/index.rst
diff --git a/docs/usecases/simpleperf/index.rst b/docs/usecases/simpleperf/index.rst
new file mode 100644
index 00000000000..0f1d30737eb
--- /dev/null
+++ b/docs/usecases/simpleperf/index.rst
@@ -0,0 +1,17 @@
+.. _simpleperf:
+
+************************
+VPP with Iperf3 and TRex
+************************
+
+.. toctree::
+   :maxdepth: 2
+
+   iperf3
+   iperf31
+   trex
+   trex1
+
+
+
+
diff --git a/docs/usecases/simpleperf/iperf3.rst b/docs/usecases/simpleperf/iperf3.rst
new file mode 100644
index 00000000000..1d159d0eef2
--- /dev/null
+++ b/docs/usecases/simpleperf/iperf3.rst
@@ -0,0 +1,237 @@
+.. _iperf3:
+
+Introduction
+============
+
+This tutorial shows how to use VPP use iperf3 and Trex to get some basic peformance
+numbers from a few basic configurations. Four examples are shown. In the first two
+examples, the **iperf3** tool is used to generate traffic, and in the last two examples
+the Cisco's `TRex Realistic Traffic Generator <http://trex-tgn.cisco.com/>`_ is used. For
+comparison purposes, the first example shows packet forwarding using ordinary kernel
+IP forwarding, and the second example shows packet forwarding using VPP.
+
+Three Intel Xeon processor platform systems are used to connect to the VPP host to pass traffic
+using **iperf3** and Cisco’s `TRex <http://trex-tgn.cisco.com/>`_.
+
+Intel 40 Gigabit Ethernet (GbE) network interface cards (NICs) are used to connect the hosts.
+
+
+Using Kernel Packet Forwarding with Iperf3
+===========================================
+
+In this test, 40 GbE Intel Ethernet Network Adapters are used to connect the three
+systems. Figure 1 illustrates this configuration.
+
+.. figure:: /_images/iperf3fig1.png
+
+Figure 1: VPP runs on a host that connects to two other systems via 40 GbE NICs.
+
+For comparison purposes, in the first example, we configure kernel forwarding in
+*csp2s22c03* and use the **iperf3** tool to measure network bandwidth between
+*csp2s22c03* and *net2s22c05*.
+
+In the second example, we start the VPP engine in *csp2s22c03* instead of using
+kernel forwarding. On *csp2s22c03*, we configure the system to have the addresses
+10.10.1.1/24 and 10.10.2.1/24 on the two 40-GbE NICs. To find all network interfaces
+available on the system, use the lshw Linux command to list all network interfaces
+and the corresponding slots *[0000:xx:yy.z]*.
+
+In this example, the 40-GbE interfaces are *ens802f0* and *ens802f1*.
+
+.. code-block:: console
+
+   csp2s22c03$ sudo lshw -class network -businfo
+   Bus info         Device        Class         Description
+   ========================================================
+   pci@0000:03:00.0  enp3s0f0     network       Ethernet Controller 10-Gig
+   pci@0000:03:00.1  enp3s0f1     network       Ethernet Controller 10-Gig
+   pci@0000:82:00.0  ens802f0     network       Ethernet Controller XL710
+   pci@0000:82:00.1  ens802f1     network       Ethernet Controller XL710
+   pci@0000:82:00.0  ens802f0d1   network       Ethernet interface
+   pci@0000:82:00.1  ens802f1d1   network       Ethernet interface
+
+
+Configure the system *csp2s22c03* to have 10.10.1.1 and 10.10.2.1 on the two 40-GbE NICs
+*ens802f0* and *ens802f1*, respectively.
+
+.. code-block:: console
+
+   csp2s22c03$ sudo ip addr add 10.10.1.1/24 dev ens802f0
+   csp2s22c03$ sudo ip link set dev ens802f0 up
+   csp2s22c03$ sudo ip addr add 10.10.2.1/24 dev ens802f1
+   csp2s22c03$ sudo ip link set dev ens802f1 up
+    
+List the route table:
+
+.. code-block:: console
+
+   csp2s22c03$ route
+   Kernel IP routing table
+   Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
+   default         jf111-ldr1a-530 0.0.0.0         UG    0      0        0 enp3s0f1
+   default         192.168.0.50    0.0.0.0         UG    100    0        0 enp3s0f0
+   10.10.1.0       *               255.255.255.0   U     0      0        0 ens802f0
+   10.10.2.0       *               255.255.255.0   U     0      0        0 ens802f1
+   10.23.3.0       *               255.255.255.0   U     0      0        0 enp3s0f1
+   link-local      *               255.255.0.0     U     1000   0        0 enp3s0f1
+   192.168.0.0     *               255.255.255.0   U     100    0        0 enp3s0f0
+
+.. code-block:: console
+
+   csp2s22c03$ ip route
+   default via 10.23.3.1 dev enp3s0f1
+   default via 192.168.0.50 dev enp3s0f0  proto static  metric 100
+   10.10.1.0/24 dev ens802f0  proto kernel  scope link  src 10.10.1.1
+   10.10.2.0/24 dev ens802f1  proto kernel  scope link  src 10.10.2.1
+   10.23.3.0/24 dev enp3s0f1  proto kernel  scope link  src 10.23.3.67
+   169.254.0.0/16 dev enp3s0f1  scope link  metric 1000
+   192.168.0.0/24 dev enp3s0f0  proto kernel scope link src 192.168.0.142 metric 100
+
+On *csp2s22c04*, we configure the system to have the address 10.10.1.2 and use
+the interface *ens802* to route IP packets 10.10.2.0/24. Use the lshw Linux
+command to list all network interfaces and the corresponding slots *[0000:xx:yy.z]*.
+
+For example, the interface *ens802d1* *(ens802)* is connected to slot *[82:00.0]*:
+
+.. code-block:: console
+
+   csp2s22c04$ sudo lshw -class network -businfo
+   Bus info          Device      Class       Description
+   =====================================================
+   pci@0000:03:00.0  enp3s0f0    network     Ethernet Controller 10-Gigabit X540-AT2
+   pci@0000:03:00.1  enp3s0f1    network     Ethernet Controller 10-Gigabit X540-AT2
+   pci@0000:82:00.0  ens802d1    network     Ethernet Controller XL710 for 40GbE QSFP+
+   pci@0000:82:00.0  ens802      network     Ethernet interface
+
+For kernel forwarding, set 10.10.1.2 to the interface *ens802*, and add a static
+route for IP packet 10.10.2.0/24:
+
+.. code-block:: console
+
+   csp2s22c04$ sudo ip addr add 10.10.1.2/24 dev ens802
+   csp2s22c04$ sudo ip link set dev ens802 up
+   csp2s22c04$ sudo ip route add 10.10.2.0/24 via 10.10.1.1
+
+.. code-block:: console
+
+   csp2s22c04$ ifconfig
+   enp3s0f0  Link encap:Ethernet  HWaddr a4:bf:01:00:92:73
+             inet addr:10.23.3.62  Bcast:10.23.3.255  Mask:255.255.255.0
+             inet6 addr: fe80::a6bf:1ff:fe00:9273/64 Scope:Link
+             UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+             RX packets:3411 errors:0 dropped:0 overruns:0 frame:0
+             TX packets:1179 errors:0 dropped:0 overruns:0 carrier:0
+             collisions:0 txqueuelen:1000
+             RX bytes:262230 (262.2 KB)  TX bytes:139975 (139.9 KB)
+   
+   ens802    Link encap:Ethernet  HWaddr 68:05:ca:2e:76:e0
+             inet addr:10.10.1.2  Bcast:0.0.0.0  Mask:255.255.255.0
+             inet6 addr: fe80::6a05:caff:fe2e:76e0/64 Scope:Link
+             UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+             RX packets:0 errors:0 dropped:0 overruns:0 frame:0
+             TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
+             collisions:0 txqueuelen:1000
+             RX bytes:0 (0.0 B)  TX bytes:5480 (5.4 KB)
+   
+   lo        Link encap:Local Loopback
+             inet addr:127.0.0.1  Mask:255.0.0.0
+             inet6 addr: ::1/128 Scope:Host
+             UP LOOPBACK RUNNING  MTU:65536  Metric:1
+             RX packets:31320 errors:0 dropped:0 overruns:0 frame:0
+             TX packets:31320 errors:0 dropped:0 overruns:0 carrier:0
+             collisions:0 txqueuelen:1
+             RX bytes:40301788 (40.3 MB)  TX bytes:40301788 (40.3 MB)
+
+After setting the route, we can ping from *csp2s22c03* to *csp2s22c04*, and vice versa:
+
+.. code-block:: console
+
+   csp2s22c03$ ping 10.10.1.2 -c 3
+   PING 10.10.1.2 (10.10.1.2) 56(84) bytes of data.
+   64 bytes from 10.10.1.2: icmp_seq=1 ttl=64 time=0.122 ms
+   64 bytes from 10.10.1.2: icmp_seq=2 ttl=64 time=0.109 ms
+   64 bytes from 10.10.1.2: icmp_seq=3 ttl=64 time=0.120 ms
+
+.. code-block:: console
+
+   csp2s22c04$ ping 10.10.1.1 -c 3
+   PING 10.10.1.1 (10.10.1.1) 56(84) bytes of data.
+   64 bytes from 10.10.1.1: icmp_seq=1 ttl=64 time=0.158 ms
+   64 bytes from 10.10.1.1: icmp_seq=2 ttl=64 time=0.096 ms
+   64 bytes from 10.10.1.1: icmp_seq=3 ttl=64 time=0.102 ms
+
+Similarly, on *net2s22c05*, we configure the system to have the address *10.10.2.2*
+and use the interface *ens803f0* to route IP packets *10.10.1.0/24*. Use the lshw
+Linux command to list all network interfaces and the corresponding slots
+*[0000:xx:yy.z]*. For example, the interface *ens803f0* is connected to slot *[87:00.0]*:
+
+.. code-block:: console
+
+   NET2S22C05$ sudo lshw -class network -businfo
+   Bus info          Device      Class          Description
+   ========================================================
+   pci@0000:03:00.0  enp3s0f0    network    Ethernet Controller 10-Gigabit X540-AT2
+   pci@0000:03:00.1  enp3s0f1    network    Ethernet Controller 10-Gigabit X540-AT2
+   pci@0000:81:00.0  ens787f0    network    82599 10 Gigabit TN Network Connection
+   pci@0000:81:00.1  ens787f1    network    82599 10 Gigabit TN Network Connection
+   pci@0000:87:00.0  ens803f0    network    Ethernet Controller XL710 for 40GbE QSFP+
+   pci@0000:87:00.1  ens803f1    network    Ethernet Controller XL710 for 40GbE QSFP+
+
+For kernel forwarding, set 10.10.2.2 to the interface ens803f0, and add a static
+route for IP packet 10.10.1.0/24:
+
+.. code-block:: console
+
+   NET2S22C05$ sudo ip addr add 10.10.2.2/24 dev ens803f0
+   NET2S22C05$ sudo ip link set dev ens803f0 up
+   NET2S22C05$ sudo ip route add 10.10.1.0/24 via 10.10.2.1
+
+After setting the route, you can ping from *csp2s22c03* to *net2s22c05*, and vice
+versa. However, in order to ping between *net2s22c05* and *csp2s22c04*, kernel IP
+forwarding in *csp2s22c03* has to be enabled:
+
+.. code-block:: console
+
+   csp2s22c03$ sysctl net.ipv4.ip_forward
+   net.ipv4.ip_forward = 0
+   csp2s22c03$ echo 1 | sudo tee /proc/sys/net/ipv4/ip_forward
+   csp2s22c03$ sysctl net.ipv4.ip_forward
+   net.ipv4.ip_forward = 1
+
+If successful, verify that now you can ping between *net2s22c05* and *csp2s22c04*:
+
+.. code-block:: console
+
+   NET2S22C05$ ping 10.10.1.2 -c 3
+   PING 10.10.1.2 (10.10.1.2) 56(84) bytes of data.
+   64 bytes from 10.10.1.2: icmp_seq=1 ttl=63 time=0.239 ms
+   64 bytes from 10.10.1.2: icmp_seq=2 ttl=63 time=0.224 ms
+   64 bytes from 10.10.1.2: icmp_seq=3 ttl=63 time=0.230 ms
+
+We use the **iperf3** utility to measure network bandwidth between hosts. In this
+test, we download the **iperf3** utility tool on both *net2s22c05* and *csp2s22c04*.
+On *csp2s22c04*, we start the **iperf3** server with “iperf3 –s”, and then on *net2s22c05*,
+we start the **iperf3** client to connect to the server:
+
+.. code-block:: console
+
+   NET2S22C05$ iperf3 -c 10.10.1.2
+   Connecting to host 10.10.1.2, port 5201
+   [  4] local 10.10.2.2 port 54074 connected to 10.10.1.2 port 5201
+   [ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
+   [  4]   0.00-1.00   sec   936 MBytes  7.85 Gbits/sec  2120    447 KBytes
+   [  4]   1.00-2.00   sec   952 MBytes  7.99 Gbits/sec  1491    611 KBytes
+   [  4]   2.00-3.00   sec   949 MBytes  7.96 Gbits/sec  2309    604 KBytes
+   [  4]   3.00-4.00   sec   965 MBytes  8.10 Gbits/sec  1786    571 KBytes
+   [  4]   4.00-5.00   sec   945 MBytes  7.93 Gbits/sec  1984    424 KBytes
+   [  4]   5.00-6.00   sec   946 MBytes  7.94 Gbits/sec  1764    611 KBytes
+   [  4]   6.00-7.00   sec   979 MBytes  8.21 Gbits/sec  1499    655 KBytes
+   [  4]   7.00-8.00   sec   980 MBytes  8.22 Gbits/sec  1182    867 KBytes
+   [  4]   8.00-9.00   sec  1008 MBytes  8.45 Gbits/sec  945    625 KBytes
+   [  4]   9.00-10.00  sec  1015 MBytes  8.51 Gbits/sec  1394    611 KBytes
+   - - - - - - - - - - - - - - - - - - - - - - - - -
+   [ ID] Interval           Transfer     Bandwidth       Retr
+   [  4]   0.00-10.00  sec  9.45 GBytes  8.12 Gbits/sec  16474             sender
+   [  4]   0.00-10.00  sec  9.44 GBytes  8.11 Gbits/sec                  receiver
+   
+   iperf Done.
diff --git a/docs/usecases/simpleperf/iperf31.rst b/docs/usecases/simpleperf/iperf31.rst
new file mode 100644
index 00000000000..50abfdf0396
--- /dev/null
+++ b/docs/usecases/simpleperf/iperf31.rst
@@ -0,0 +1,119 @@
+.. _iperf31:
+
+Using VPP with Iperf3
+=====================
+
+First, disable kernel IP forward in *csp2s22c03* to ensure the host cannot use
+kernel forwarding (all the settings in *net2s22c05* and *csp2s22c04* remain unchanged):
+
+.. code-block:: console
+
+   csp2s22c03$ echo 0 | sudo tee /proc/sys/net/ipv4/ip_forward
+   0
+   csp2s22c03$ sysctl net.ipv4.ip_forward
+   net.ipv4.ip_forward = 0
+
+You can use DPDK’s device binding utility (./install-vpp-native/dpdk/sbin/dpdk-devbind)
+to list network devices and bind/unbind them from specific drivers. The flag “-s/--status”
+shows the status of devices; the flag “-b/--bind” selects the driver to bind. The
+status of devices in our system indicates that the two 40-GbE XL710 devices are located
+at 82:00.0 and 82:00.1. Use the device’s slots to bind them to the driver uio_pci_generic:
+
+.. code-block:: console
+
+   csp2s22c03$ ./install-vpp-native/dpdk/sbin/dpdk-devbind -s
+   
+   Network devices using DPDK-compatible driver
+   ============================================
+   <none>
+   
+   Network devices using kernel driver
+   ===================================
+   0000:03:00.0 'Ethernet Controller 10-Gigabit X540-AT2' if=enp3s0f0 drv=ixgbe unused=vfio-pci,uio_pci_generic *Active*
+   0000:03:00.1 'Ethernet Controller 10-Gigabit X540-AT2' if=enp3s0f1 drv=ixgbe unused=vfio-pci,uio_pci_generic *Active*
+   0000:82:00.0 'Ethernet Controller XL710 for 40GbE QSFP+' if=ens802f0d1,ens802f0 drv=i40e unused=uio_pci_generic                       
+   0000:82:00.1 'Ethernet Controller XL710 for 40GbE QSFP+' if=ens802f1d1,ens802f1 drv=i40e unused=uio_pci_generic                        
+   
+   Other network devices
+   =====================
+   <none>
+   
+   csp2s22c03$ sudo modprobe uio_pci_generic
+   csp2s22c03$ sudo ./install-vpp-native/dpdk/sbin/dpdk-devbind --bind uio_pci_generic 82:00.0
+   csp2s22c03$ sudo ./install-vpp-native/dpdk/sbin/dpdk-devbind --bind uio_pci_generic 82:00.1
+
+   csp2s22c03$ sudo ./install-vpp-native/dpdk/sbin/dpdk-devbind -s
+   
+   Network devices using DPDK-compatible driver
+   ============================================
+   0000:82:00.0 'Ethernet Controller XL710 for 40GbE QSFP+' drv=uio_pci_generic unused=i40e,vfio-pci
+   0000:82:00.1 'Ethernet Controller XL710 for 40GbE QSFP+' drv=uio_pci_generic unused=i40e,vfio-pci
+   
+   Network devices using kernel driver
+   ===================================
+   0000:03:00.0 'Ethernet Controller 10-Gigabit X540-AT2' if=enp3s0f0 drv=ixgbe unused=vfio-pci,uio_pci_generic *Active*
+   0000:03:00.1 'Ethernet Controller 10-Gigabit X540-AT2' if=enp3s0f1 drv=ixgbe unused=vfio-pci,uio_pci_generic *Active*
+   
+Start the VPP service, and verify that VPP is running:
+
+.. code-block:: console
+
+   csp2s22c03$ sudo service vpp start
+   csp2s22c03$ ps -ef | grep vpp
+   root     105655      1 98 17:34 ?        00:00:02 /usr/bin/vpp -c /etc/vpp/startup.conf
+   :w
+            105675 105512  0 17:34 pts/4    00:00:00 grep --color=auto vpp
+   
+To access the VPP CLI, issue the command sudo vppctl . From the VPP interface, list
+all interfaces that are bound to DPDK using the command show interface:
+
+VPP shows that the two 40-Gbps ports located at 82:0:0 and 82:0:1 are bound. Next,
+you need to assign IP addresses to those interfaces, bring them up, and verify:
+
+.. code-block:: console
+
+   vpp# set interface ip address FortyGigabitEthernet82/0/0 10.10.1.1/24
+   vpp# set interface ip address FortyGigabitEthernet82/0/1 10.10.2.1/24
+   vpp# set interface state FortyGigabitEthernet82/0/0 up
+   vpp# set interface state FortyGigabitEthernet82/0/1 up
+   vpp# show interface address
+   FortyGigabitEthernet82/0/0 (up):
+     10.10.1.1/24
+   FortyGigabitEthernet82/0/1 (up):
+     10.10.2.1/24
+   local0 (dn):
+
+At this point VPP is operational. You can ping these interfaces either from *net2s22c05*
+or *csp2s22c04*. Moreover, VPP can forward packets whose IP address are 10.10.1.0/24 and
+10.10.2.0/24, so you can ping between *net2s22c05* and *csp2s22c04*. Also, you can
+run iperf3 as illustrated in the previous example, and the result from running iperf3
+between *net2s22c05* and *csp2s22c04* increases to 20.3 Gbits per second.
+
+.. code-block:: console
+
+   ET2S22C05$ iperf3 -c 10.10.1.2
+   Connecting to host 10.10.1.2, port 5201
+   [  4] local 10.10.2.2 port 54078 connected to 10.10.1.2 port 5201
+   [ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
+   [  4]   0.00-1.00   sec  2.02 GBytes  17.4 Gbits/sec  460   1.01 MBytes
+   [  4]   1.00-2.00   sec  3.28 GBytes  28.2 Gbits/sec    0   1.53 MBytes
+   [  4]   2.00-3.00   sec  2.38 GBytes  20.4 Gbits/sec  486    693 KBytes
+   [  4]   3.00-4.00   sec  2.06 GBytes  17.7 Gbits/sec  1099   816 KBytes
+   [  4]   4.00-5.00   sec  2.07 GBytes  17.8 Gbits/sec  614   1.04 MBytes
+   [  4]   5.00-6.00   sec  2.25 GBytes  19.3 Gbits/sec  2869   716 KBytes
+   [  4]   6.00-7.00   sec  2.26 GBytes  19.4 Gbits/sec  3321   683 KBytes
+   [  4]   7.00-8.00   sec  2.33 GBytes  20.0 Gbits/sec  2322   594 KBytes
+   [  4]   8.00-9.00   sec  2.28 GBytes  19.6 Gbits/sec  1690  1.23 MBytes
+   [  4]   9.00-10.00  sec  2.73 GBytes  23.5 Gbits/sec  573    680 KBytes
+   - - - - - - - - - - - - - - - - - - - - - - - - -
+   [ ID] Interval           Transfer     Bandwidth       Retr
+   [  4]   0.00-10.00  sec  23.7 GBytes  20.3 Gbits/sec  13434             sender
+   [  4]   0.00-10.00  sec  23.7 GBytes  20.3 Gbits/sec                  receiver
+   
+   iperf Done.
+
+The **show run** command displays the graph runtime statistics. Observe that the
+average vector per node is 6.76, which means on average, a vector of 6.76 packets
+is handled in a graph node.
+
+.. figure:: /_images/build-a-fast-network-stack-terminal.png
diff --git a/docs/usecases/simpleperf/trex.rst b/docs/usecases/simpleperf/trex.rst
new file mode 100644
index 00000000000..3dffcab4675
--- /dev/null
+++ b/docs/usecases/simpleperf/trex.rst
@@ -0,0 +1,133 @@
+.. _trex:
+
+Using VPP with TRex
+===================
+
+In this example we use only two systems, *csp2s22c03* and *net2s22c05*, to run
+**TRex** VPP is installed on **csp2s22c03** and run as a packet forwarding
+engine. On *net2s22c05*, TRex is used to generate both client and server-side
+traffic. **TRex** is a high-performance traffic generator. It leverages DPDK and
+run in user space. Figure 2 illustrates this configuration.
+
+VPP is set up on *csp2s22c03* exactly as it was in the previous example. Only
+the setup on *net2s22c05* is modified slightly to run TRex preconfigured traffic
+files.
+
+.. figure:: /_images/trex.png
+
+Figure 2: The TRex traffic generator sends packages to the host that has VPP running.
+
+
+First we install **TRex**.
+
+.. code-block:: console
+
+   NET2S22C05$ wget --no-cache http://trex-tgn.cisco.com/trex/release/latest
+   NET2S22C05$ tar -xzvf latest
+   NET2S22C05$ cd v2.37
+
+Then show the devices we have.
+
+.. code-block:: console
+
+   NET2S22C05$ sudo ./dpdk_nic_bind.py -s
+
+   Network devices using DPDK-compatible driver
+   ============================================
+   0000:87:00.0 'Ethernet Controller XL710 for 40GbE QSFP+' drv=vfio-pci unused=i40e
+   0000:87:00.1 'Ethernet Controller XL710 for 40GbE QSFP+' drv=vfio-pci unused=i40e
+
+   Network devices using kernel driver
+   ===================================
+   0000:03:00.0 'Ethernet Controller 10-Gigabit X540-AT2' if=enp3s0f0 drv=ixgbe unused=vfio-pci *Active*
+   0000:03:00.1 'Ethernet Controller 10-Gigabit X540-AT2' if=enp3s0f1 drv=ixgbe unused=vfio-pci
+   0000:81:00.0 '82599 10 Gigabit TN Network Connection' if=ens787f0 drv=ixgbe unused=vfio-pci
+   0000:81:00.1 '82599 10 Gigabit TN Network Connection' if=ens787f1 drv=ixgbe unused=vfio-pci
+
+   Other network devices
+   =====================
+   <none>
+
+Create the */etc/trex_cfg.yaml* configuration file. In this configuration file,
+the port should match the interfaces available in the target system, which is
+*net2s22c05* in our example. The IP addresses correspond to Figure 2. For more
+information on the configuration file, please refer to the `TRex Manual <http://trex-tgn.cisco.com/trex/doc/index.html>`_.
+
+.. code-block:: console
+
+   NET2S22C05$ cat /etc/trex_cfg.yaml
+   - port_limit: 2
+     version: 2
+     interfaces: ['87:00.0', '87:00.1']
+     port_bandwidth_gb: 40
+     port_info:
+         - ip: 10.10.2.2
+           default_gw: 10.10.2.1
+         - ip: 10.10.1.2
+           default_gw: 10.10.1.1
+   
+     platform:
+         master_thread_id: 0
+         latency_thread_id: 1
+         dual_if:
+           - socket: 1
+             threads: [22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43]
+
+Stop the previous VPP session and start it again in order to add a route for new
+IP addresses 16.0.0.0/8 and 48.0.0.0/8, according to Figure 2. Those IP addresses
+are needed because TRex generates packets that use these addresses. Refer to the
+`TRex Manual <http://trex-tgn.cisco.com/trex/doc/index.html>`_ for details on
+these traffic templates.
+
+.. code-block:: console
+
+   csp2s22c03$ sudo service vpp stop
+   csp2s22c03$ sudo service vpp start
+   csp2s22c03$ sudo vppctl
+       _______    _        _   _____  ___
+    __/ __/ _ \  (_)__    | | / / _ \/ _ \
+    _/ _// // / / / _ \   | |/ / ___/ ___/
+    /_/ /____(_)_/\___/   |___/_/  /_/
+   
+   vpp# sho int
+                 Name               Idx       State          Counter          Count
+   FortyGigabitEthernet82/0/0        1        down
+   FortyGigabitEthernet82/0/1        2        down
+   local0                            0        down
+   
+   vpp#
+   vpp# set interface ip address FortyGigabitEthernet82/0/0 10.10.1.1/24
+   vpp# set interface ip address FortyGigabitEthernet82/0/1 10.10.2.1/24
+   vpp# set interface state FortyGigabitEthernet82/0/0 up
+   vpp# set interface state FortyGigabitEthernet82/0/1 up
+   vpp# ip route add 16.0.0.0/8 via 10.10.1.2
+   vpp# ip route add 48.0.0.0/8 via 10.10.2.2
+   vpp# clear run
+
+Now, you can generate a simple traffic flow from *net2s22c05* using the traffic
+configuration file "cap2/dns.yaml".
+
+.. code-block:: console
+
+   NET2S22C05$ sudo ./t-rex-64 -f cap2/dns.yaml -d 1 -l 1000
+    summary stats
+    --------------
+    Total-pkt-drop       : 0 pkts
+    Total-tx-bytes       : 166886 bytes
+    Total-tx-sw-bytes    : 166716 bytes
+    Total-rx-bytes       : 166886 byte
+   
+    Total-tx-pkt         : 2528 pkts
+    Total-rx-pkt         : 2528 pkts
+    Total-sw-tx-pkt      : 2526 pkts
+    Total-sw-err         : 0 pkts
+    Total ARP sent       : 4 pkts
+    Total ARP received   : 2 pkts
+    maximum-latency   : 35 usec
+    average-latency   : 8 usec
+    latency-any-error : OK
+
+On *csp2s22c03*, the *show run* command displays the graph runtime statistics.
+
+.. figure:: /_images/build-a-fast-network-stack-terminal-2.png
+
diff --git a/docs/usecases/simpleperf/trex1.rst b/docs/usecases/simpleperf/trex1.rst
new file mode 100644
index 00000000000..d1101edb85a
--- /dev/null
+++ b/docs/usecases/simpleperf/trex1.rst
@@ -0,0 +1,44 @@
+.. _trex1:
+
+Using VPP with TRex Mixed Traffic Templates
+===========================================
+
+In this example, a more complicated traffic with delay profile on *net2s22c05* is
+generated using the traffic configuration file "avl/sfr_delay_10_1g.yaml":
+
+.. code-block:: console
+
+   NET2S22C05$ sudo ./t-rex-64 -f avl/sfr_delay_10_1g.yaml -c 2 -m 20 -d 100 -l 1000
+   summary stats
+    --------------
+    Total-pkt-drop       : 43309 pkts
+    Total-tx-bytes       : 251062132504 bytes
+    Total-tx-sw-bytes    : 21426636 bytes
+    Total-rx-bytes       : 251040139922 byte
+   
+    Total-tx-pkt         : 430598064 pkts
+    Total-rx-pkt         : 430554755 pkts
+    Total-sw-tx-pkt      : 324646 pkts
+    Total-sw-err         : 0 pkts
+    Total ARP sent       : 5 pkts
+    Total ARP received   : 4 pkts
+    maximum-latency   : 1278 usec
+    average-latency   : 9 usec
+    latency-any-error : ERROR
+
+On *csp2s22c03*, use the VCC CLI command show run to display the graph runtime statistics.
+Observe that the average vector per node is 10.69 and 14.47:
+
+.. figure:: /_images/build-a-fast-network-stack-terminal-3.png
+
+Summary
+=======
+
+This tutorial showed how to download, compile, and install the VPP binary on an
+Intel® Architecture platform. Examples of /etc/sysctl.d/80-vpp.conf and
+/etc/vpp/startup.conf/startup.conf configuration files were provided to get the
+user up and running with VPP. The tutorial also illustrated how to detect and bind
+the network interfaces to a DPDK-compatible driver. You can use the VPP CLI to assign
+IP addresses to these interfaces and bring them up. Finally, four examples using iperf3
+and TRex were included, to show how VPP processes packets in batches.
+