56 lines
2.2 KiB
ReStructuredText
56 lines
2.2 KiB
ReStructuredText
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.. drb1511538596277
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.. _static-vxlan:
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============
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Static VXLAN
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============
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The static unicast mode relies on the mapping of neutron ports to worker nodes
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to receive the packet in order to reach the VM.
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In this mode there is no multicast addressing or multicast packets sent from
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the worker nodes, neither is there any learning. In contrast to the dynamic
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VXLAN mode, any packets destined to unknown MAC addresses are dropped. To
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ensure that there are no unknown endpoints the system examines the neutron
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port DB and gathers the list of mappings between port MAC/IP addresses and the
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hostname on which they reside. This information is then propagated throughout
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the system to pre-provision endpoint entries into all vSwitch instances. This
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ensures that each vSwitch knows how to reach all VM instances that are related
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to any local VM instances.
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Static VXLAN is limited to use on one data network. If configured, it must be
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enabled on all OpenStack worker nodes.
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.. figure:: figures/oeg1510005898965.png
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`Static Endpoint Distribution`
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.. note::
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In the static mode there is no dynamic endpoint learning. This means that
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if a node does not have an entry for some destination MAC address it will
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not create an entry even if it receives a packet from that device.
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.. _static-vxlan-section-N1006B-N1001F-N10001:
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------------------------------------------------
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Workflow to Configure Static VXLAN Data Networks
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------------------------------------------------
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Use the following workflow to create static VXLAN data networks and add
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segmentation ranges using the CLI.
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.. _static-vxlan-ol-bpj-dlb-1cb:
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#. Create a VXLAN data network, see :ref:`Adding Data Networks Using the CLI
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<adding-data-networks-using-the-cli>`.
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#. Add segmentation ranges to static VXLAN data networks, see :ref:`Adding
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Segmentation Ranges Using the CLI <adding-segmentation-ranges-using-the-cli>`.
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#. Establish routes between the hosts, see :ref:`Adding and Maintaining Routes
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for a VXLAN Network <adding-and-maintaining-routes-for-a-vxlan-network>`.
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For more information on the differences between the dynamic and static VXLAN
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modes, see :ref:`Differences Between Dynamic and Static VXLAN Modes
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<differences-between-dynamic-and-static-vxlan-modes>`. |