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Epic Name:
[RHOSO] Resolve Packet fragmentation with ML2/OVN
Blocked:
False
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Ready:
False
Color Status:
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Dev Approval:
Proposed
Docs Approval:
Proposed
Epic Status:
Done
PM Approval:
Proposed
QE Approval:
Proposed
Hierarchy Progress Bar:

0% To Do, 0% In Progress, 100% Done
Release Note Text:

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.North/south fragmentation fix
Before this update, OpenStack did not fragment north-south packets as expected when the external maximum transmission unit (MTU) was less than the internal MTU, which resulted in packets being dropped silently.
With this update, fragmentation happens as expected, and packets are not dropped silently.

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.North/south fragmentation fix Before this update, OpenStack did not fragment north-south packets as expected when the external maximum transmission unit (MTU) was less than the internal MTU, which resulted in packets being dropped silently. With this update, fragmentation happens as expected, and packets are not dropped silently.
Release Note Type:
Bug Fix
Release Note Status:
Done
Intelligence Requested:
Market:

We need to fix packet fragmentation issue with ML2/OVN.

This issue is really annoying and it has a critical impact to all users.
We need to think about the following situation

This should be fixed in OSP17.1 and OSO18

depends on

FDP-1149 Backport "northd: Fix pmtud for non routed traffic" to OVN24.03 to resolve packet fragmentation for E/W traffic.

is duplicated by

OSPRH-12699 Add a description for ovn_emit_need_to_frag = true and notes about MTU configuration in external and internal networks for RHOSP 17.1