neutron/releasenotes/notes/OVN-not-responding-to-ARP-for-DOWN-ports-3620173f00089539.yaml
Jakub Libosvar 4e566b11d0 Introduce ovn_nb_global config section
The patch introduces a new config section ovn_nb_global. All options
from this section are passed to OVN Northbound NB_Global table to
configure Northbound OVN.

First option is ignore_lsp_down to override OVN default configuration.
This option was changed in OVN to `true` [1] but for Neutron it's better
to not answer ARP packets when ports are in DOWN status.

[1] https://www.mail-archive.com/ovs-dev@openvswitch.org/msg60064.html

Change-Id: I478249cae483fd2540a7ff3ab714e3d9c3e13f17
Signed-off-by: Jakub Libosvar <libosvar@redhat.com>
2023-10-13 16:56:24 +00:00

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YAML

---
upgrade:
- |
Starting with OVN version v21.12.0, OVN replies to ARP requests for ports
that are in a DOWN status. It does not reply in versions older than
v21.12.0. In order to keep the same behavior in Neutron, the default OVN
behavior is overridden by Neutron and Neutron ports will no longer reply to
ARP packets if the ports are in a DOWN state. If it is required to reply to
ARP for such ports, the config option ``ignore_lsp_down`` from
``[ovn_nb_global]`` section can be set to True in the Neutron config. It is
set to False by default.