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49 lines
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==========
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Networking
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==========
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OpenStack provides a rich networking environment. This chapter
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details the requirements and options to consider when designing your
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cloud. This includes examples of network implementations to
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consider, information about some OpenStack network layouts and networking
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services that are essential for stable operation.
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.. warning::
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If this is the first time you are deploying a cloud infrastructure
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in your organization, your first conversations should be with your
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networking team. Network usage in a running cloud is vastly different
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from traditional network deployments and has the potential to be
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disruptive at both a connectivity and a policy level.
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For example, you must plan the number of IP addresses that you need for
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both your guest instances as well as management infrastructure.
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Additionally, you must research and discuss cloud network connectivity
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through proxy servers and firewalls.
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See the `OpenStack Security Guide <http://docs.openstack.org/sec/>`_ for tips
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on securing your network.
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Networking (neutron)
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~~~~~~~~~~~~~~~~~~~~
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OpenStack Networking (neutron) is the component of OpenStack that provides
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the Networking service API and a reference architecture that implements a
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Software Defined Network (SDN) solution.
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The Networking service provides full control over creation of virtual network
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resources to tenants. This is often accomplished in the form of tunneling
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protocols that establish encapsulated communication paths over existing
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network infrastructure in order to segment tenant traffic. This method varies
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depending on the specific implementation, but some of the more common methods
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include tunneling over GRE, encapsulating with VXLAN, and VLAN tags.
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.. toctree::
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:maxdepth: 2
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design-networking/design-networking-concepts
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design-networking/design-networking-design
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design-networking/design-networking-layer2
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design-networking/design-networking-layer3
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design-networking/design-networking-services
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