Bug ID 466034: VxLAN traffic disaggregation is not based on UDP ports by default.

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP All(all modules)

Known Affected Versions:
11.6.2 HF1, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.5.1 HF5

Opened: Jun 06, 2014

Severity: 3-Major


VxLAN traffic cannot be evenly load balanced between tmms if limited outer IP addresses are used.


Reduce VxLAN traffic throughput.


VxLAN configured.


Modify sys db iptunnel.vxlan.udpport to value 0. It will cause BIGIP to treat vxlan traffic as regular UDP traffic and use UDP ports for disaggregation.

Fix Information

VxLAN packets are now treated as UDP packets by default in HW, which uses the port in addition to the IP address.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips