24 lines
1.3 KiB
YAML
24 lines
1.3 KiB
YAML
---
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issues:
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In OVN 22.09 the option "localnet_learn_fdb" was added, enabling localnet
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ports to learn MAC addresses and store them at the FDB table.
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There is no aging mechanism for those MACs (that is the reason for not
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having this option enabled by default) and therefore it needs to be used
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with care, specially when provider networks are big. It is recommended to
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perform periodic manual cleanups of FDB table, to avoid scalability
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issues -- until OVN implements an aging mechanism for this, tracked at
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https://bugzilla.redhat.com/show_bug.cgi?id=2179942.
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fixes:
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By default localnet ports don't learn MAC addresses and therefore they are
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not stored in the FDB table at OVN SB DB. This leads to flooding issues
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when the destination traffic is an unknown IP by OpenStack. In OVN 22.09
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the option "localnet_learn_fdb" was added, enabling those ports to learn
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MAC addresses and store them at the FDB table. Note there is no aging
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mechanism for those MACs, thus this is not enabled by default and needs
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to be used carefully, specially when provider networks are big, and/or
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performing manual cleanup of FDB table over time to avoid scalability
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issues, until OVN implements it at
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https://bugzilla.redhat.com/show_bug.cgi?id=2179942.
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