Last Modified: Oct 16, 2023
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4
Fixed In:
13.0.0, 12.1.4.1
Opened: Apr 20, 2016 Severity: 3-Major Related Article:
K44907534
Fast Forwarded UDP packets might be dropped if datagram-load-balancing is enabled.
UDP packets are dropped.
-- TMM is overloaded. -- UDP datagram load-balancing is used.
There is no workaround other than to disable datagram-load-balancing in the affected UDP profile. To do so, run the following command: tmsh modify ltm profile udp <profile_name> datagram-load-balancing disabled
The fast-forwarding mechanism now properly handle packets with invalidated flows. The packets are now sent back to the source TMM for reprocessing. The TCP and TCP4 filters are updated to properly work with the changed fast-forwarding implementation.