openstack-manuals/doc/install-guide/source/neutron-compute-install-opt...

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Networking Option 1: Provider networks
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Install and configure the Networking components on a *compute* node.
Configure the Linux bridge agent
--------------------------------
The Linux bridge agent builds layer-2 (bridging and switching) virtual
networking infrastructure for instances including VXLAN tunnels for private
networks and handles security groups.
Edit the ``/etc/neutron/plugins/ml2/linuxbridge_agent.conf`` file.
#. In the ``[linux_bridge]`` section, map the public virtual network to the
public physical network interface:
.. code-block:: ini
[linux_bridge]
physical_interface_mappings = public:PUBLIC_INTERFACE_NAME
Replace ``PUBLIC_INTERFACE_NAME`` with the name of the underlying physical
public network interface.
#. In the ``[vxlan]`` section, disable VXLAN overlay networks:
.. code-block:: ini
[vxlan]
enable_vxlan = False
#. In the ``[securitygroup]`` section, enable security groups, enable
:term:`ipset`, and configure the Linux bridge :term:`iptables` firewall
driver:
.. code-block:: ini
[securitygroup]
...
enable_security_group = True
enable_ipset = True
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
Return to
:ref:`Networking compute node configuration <neutron-compute-compute>`.