Bug ID 440877: Load balancing of large UDP datagrams that are fragmented

Last Modified: Feb 13, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.2.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF4

Opened: Dec 16, 2013
Severity: 3-Major
Related AskF5 Article:
K15079

Symptoms

UDP traffic being load-balanced using a stateless virtual server does not work properly for large UDP datagrams (when the datagrams are fragmented).

Impact

Stateless virtual server does not properly process fragmented packets in this case.

Conditions

This occurs on BIG-IP systems configured with a stateless virtual server.

Workaround

Configure FastL4 virtual server with an immediate timeout and UDP virtual server with an immediate timeout.

Fix Information

Stateless virtual server now properly processes fragmented packets in this case.

Behavior Change