42 lines
2.0 KiB
XML
42 lines
2.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="networking-service-overview">
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<title>OpenStack Networking</title>
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<para>OpenStack Networking allows you to create and
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attach interface devices managed by other OpenStack services to
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networks. Plug-ins can be implemented to accommodate different
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networking equipment and software, providing flexibility to OpenStack
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architecture and deployment.</para>
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<para>It includes the following components:</para>
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<variablelist>
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<varlistentry><term><systemitem
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class="service">neutron-server</systemitem></term>
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<listitem><para>Accepts and routes API requests to the appropriate
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OpenStack Networking plug-in for action.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>OpenStack Networking plug-ins and agents</term>
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<listitem><para>Plugs and unplugs ports, creates networks or subnets,
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and provides IP addressing. These plug-ins and agents differ
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depending on the vendor and technologies used in the particular cloud.
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OpenStack Networking ships with plug-ins and agents for Cisco
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virtual and physical switches, NEC OpenFlow products, Open
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vSwitch, Linux bridging, and the VMware NSX product.</para>
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<para>The common agents are L3 (layer 3), DHCP (dynamic host IP
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addressing), and a plug-in agent.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>Messaging queue</term>
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<listitem><para>Used by most OpenStack Networking installations to route
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information between the neutron-server and various agents, as well as a
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database to store networking state for particular
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plug-ins.</para></listitem>
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</varlistentry>
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</variablelist>
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<para>OpenStack Networking mainly interacts with OpenStack Compute to
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provide networks and connectivity for its instances.</para>
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</section>
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