9515c771e7
DVR supports both East/West and North/South routing. While the
SNAT is centralized the DNAT is mostly distributed. There are
certain circumstances where the DNAT might be centralized when
the ports are unbound.
In order to have a well defined behavior and when there are
no external network connectivity available in the compute host,
the DNAT functionality is centralized.
In order to achieve this we are introducing a new agent type
option 'dvr_no_external' to centralize the DNAT.
This new L3 agent type ('dvr_no_external') would only allow the East/West
routing to occur in the compute host and the DNAT or Floating IP will be
configured in the centralized network node.
Change-Id: Ia5d7336e478e0fa5ba62b7ae5ed0c56656116d94
Partial-Bug: #1667877
22 lines
915 B
YAML
22 lines
915 B
YAML
---
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prelude: >
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A new agent_mode(``dvr_no_external``) for DVR routers has been added
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to allow the server to configure Floating IPs associated with DVR at
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the centralized node.
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features:
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- |
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A new DVR agent type ``dvr_no_external`` has been introduced with this
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release. This agent type allows the Floating IPs (DNAT/North-South routing)
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to be centralized while the East/West routing is still distributed.
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issues:
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There can be a mixture of ``dvr`` agents and ``dvr_no_external`` agents.
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But please avoid any VM with Floating IP migration between a ``dvr`` agent
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and a ``dvr_no_external`` agent. All VM ports with Floating IPs should be
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migrated to same agent_mode.
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This would be one of the restrictions.
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upgrade:
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A new DVR agent mode of ``dvr_no_external`` was added. Changing between
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this mode and ``dvr`` is a disruptive operation to the dataplane.
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