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<?xml version="1.0" encoding="ISO-8859-1"?>
<chapter id="clav_vnf_example">
<title>Clavister VNF Example Use-cases</title>
<section id="clav_vnf">
<title>Clavister VNF</title>
<para>In this use case, <literal>target_1</literal> will run the Clavister
VNF and an Open vSwitch bridge, while <literal>target_2</literal> will run
two iPerf VNFs.</para>
<figure>
<title>Clavister VNF Example Overview</title>
<mediaobject>
<imageobject>
<imagedata align="center" fileref="images/clavister_vnf_diagram.png"
scale="50" />
</imageobject>
</mediaobject>
</figure>
<para><emphasis role="bold">How to setup the target to run the Clavister
VNF and an Open vSwitch Bridge</emphasis></para>
<orderedlist>
<para><emphasis role="bold">Configure the Network on target_1 and
target_2:</emphasis></para>
<listitem>
<para>From the uCPE Manager select the target_1:
<literal>Configuration</literal> -> <literal>OpenVSwitch</literal>
-> H<literal>ost Interfaces</literal> ->
<literal>Add</literal></para>
</listitem>
<listitem>
<para>Select the network interface that will be used to connect to the
second target, configure it for DPDK, and click
<literal>Create</literal> to send the configuration to the
target:</para>
<figure>
<title>Host Interface Creation</title>
<mediaobject>
<imageobject>
<imagedata align="center"
fileref="images/host_interface_creation.png" />
</imageobject>
</mediaobject>
</figure>
</listitem>
<listitem>
<para>Create an Open vSwitch bridge (<literal>ovsbr0</literal>) with
one DPDK interface by selecting the <literal>Add</literal> button from
the <literal>Bridges</literal> tab.</para>
</listitem>
<listitem>
<para>Once the bridge creation popup appears, fill the fields and add
the physical interface:</para>
<figure>
<title>OVS bridge</title>
<mediaobject>
<imageobject>
<imagedata align="center" fileref="images/ovs_bridge_zero.png"
scale="80" />
</imageobject>
</mediaobject>
</figure>
</listitem>
<listitem>
<para>Repeat the steps above on the target_2, by also using one DPDK
interface and creating an OVS bridge.</para>
</listitem>
</orderedlist>
<orderedlist>
<para><emphasis role="bold">Instantiate the VNFs:</emphasis></para>
<para>Once the network configuration has been completed on both targets
instantiate the VNFs:</para>
<para><emphasis role="bold">A) Instantiate Clavister VNF on
target_1:</emphasis></para>
<listitem>
<para>Select the target_1, then the VNF option from the top toolbar:
<literal>VNF</literal> -> <literal>Instances</literal> ->
<literal>Add</literal>.</para>
</listitem>
<listitem>
<para>Fill in the required information about the
<literal>Clavister</literal> VNF, (the default network configuration
can be used):</para>
<figure>
<title>VNF Instance</title>
<mediaobject>
<imageobject>
<imagedata align="center" fileref="images/vnf_instance.png"
scale="80" />
</imageobject>
</mediaobject>
</figure>
</listitem>
</orderedlist>
<orderedlist>
<para><emphasis role="bold">B) Instantiate two iPerf VNFs (one as client
and one as server) on target_2: </emphasis></para>
<listitem>
<para>Instantiate two <literal>iPerf</literal> VNFs on target_2. One
will act as the server and the second as the client.</para>
</listitem>
<listitem>
<para>Select target_2, then the VNF option from the top toolbar:
<literal>VNF</literal> -> <literal>Instances</literal> ->
<literal>Add</literal>.</para>
</listitem>
<listitem>
<para>In the <literal>VNF Instance</literal> window, select the first
<literal>iPerf</literal> VNF from the dropdown menu, configure it to
act as a server by unchecking the <literal>Client mode IPerf</literal>
box, and click the <literal>Create</literal> button.</para>
</listitem>
<listitem>
<para>Select <literal>Add</literal>, enable the <literal>Client mode
IPerf</literal> checkbox and then click <literal>Create</literal> to
instantiate the second <literal>iPerf VNF</literal> as a client, and
to run it in client mode.</para>
</listitem>
<listitem>
<para>In order to check that traffic is forwarded between the VNFs,
connect to the iPerf VNF client console:</para>
<para>Connect to the target_2 by using: <literal>SSH</literal> ->
<literal>user</literal> (root) -><literal>Connect</literal> and run
the following:</para>
<programlisting>virsh list
virsh console
root@qemux86-64:~# iperf3 -c 192.168.10.10</programlisting>
</listitem>
</orderedlist>
</section>
<section id="clav_example_sriov">
<title>Clavister VNF using SR-IOV</title>
<para>In this use case, target 1 will run the iPerf server and iPerf
client VNFs using SR-IOV and target 2 will run the Clavister VNF using
SR-IOV with two virtual functions (vf1 and vf2):</para>
<figure>
<title>Example Overview</title>
<mediaobject>
<imageobject>
<imagedata align="center" fileref="images/clav_VNF_demo_SR-IOV.png"
scale="60" />
</imageobject>
</mediaobject>
</figure>
<orderedlist>
<listitem>
<para>On target 2, create an SR-IOV configuration with 2 virtual
functions: <literal>Configuration</literal> ->
<literal>OpenVSwitch</literal> -> <literal>Host
Interfaces</literal> -> <literal>Add</literal>:</para>
<figure>
<title>SR-IOV configuration with 2 virtual functions</title>
<mediaobject>
<imageobject>
<imagedata align="center"
fileref="images/sriov_configuration.png" scale="80" />
</imageobject>
</mediaobject>
</figure>
</listitem>
<listitem>
<para>Instantiate the Clavister VNF on target 2, by clicking
<literal>VNF</literal> -> <literal>Instances</literal> ->
<literal>Add</literal>.</para>
<para>Select <literal>SrIovAdapterPool</literal> as an Interface type
for both Interface1 type and 2 type, before clicking
<literal>Create</literal>:</para>
<figure>
<title>Instantiating the Clavister VNF on target 2</title>
<mediaobject>
<imageobject>
<imagedata align="center" fileref="images/srlov_adap_pool.png"
scale="70" />
</imageobject>
</mediaobject>
</figure>
</listitem>
<listitem>
<para>On target 1, create an SR-IOV interface as done in step
1.</para>
</listitem>
<listitem>
<para>Create the iPerf server on target 1. Select
<literal>SrIovAdapterPool</literal> as an Interface type:</para>
<figure>
<title>IPerf Server Interface Type</title>
<mediaobject>
<imageobject>
<imagedata align="center"
fileref="images/iperf_server_inttype.png" scale="70" />
</imageobject>
</mediaobject>
</figure>
</listitem>
<listitem>
<para>Create the iPerf client on target 1. Select
<literal>SrIovAdapterPool</literal> as an Interface type and tick the
<literal>Client mode IPer</literal> checkbox:</para>
<figure>
<title>IPerf Client Interface Type</title>
<mediaobject>
<imageobject>
<imagedata align="center"
fileref="images/iperf_client_inttype.png" scale="70" />
</imageobject>
</mediaobject>
</figure>
</listitem>
<listitem>
<para>In order to check that traffic is forwarded between the VNFs,
connect to the iPerf VNF client console by using:
<literal>SSH</literal> -> <literal>user</literal> (root)
-><literal>Connect</literal> and run the following
commands:<programlisting>virsh list
virsh console
root@qemux86-64:~# iperf3 -c 192.168.10.10</programlisting></para>
</listitem>
</orderedlist>
</section>
</chapter>
|
