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authorjdenisco <jdenisco@cisco.com>2018-10-30 08:46:02 -0400
committerDave Barach <openvpp@barachs.net>2018-10-30 13:10:28 +0000
commit1511a4e953a608eeca9cf566c40ef23232f50f57 (patch)
tree89d0759bd94c71f23ae251aad19f593b1665bcbd /docs/usecases/simpleperf/iperf31.rst
parent949bbbc7a467d09e4b2f2d1979b494ffc08ccc19 (diff)
docs: Add VPP with iperf and trex
Change-Id: I9f238b6092bc072fd875facfee5262c6b155043e Signed-off-by: jdenisco <jdenisco@cisco.com>
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+.. _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