Bug ID 491030: Nitrox crypto accelerator can sometimes hang when encrypting SSL records

Last Modified: Nov 22, 2021

Affected Product(s):
BIG-IP APM, LTM(all modules)

Known Affected Versions:
11.6.0, 11.5.1, 11.5.0, 11.4.1, 11.4.0, 11.3.0, 11.2.1, 11.2.0, 11.1.0, 11.0.0, 10.2.4, 10.2.3, 10.2.2, 10.2.1, 10.2.0, 10.1.0, 10.0.1, 10.0.0

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.2, 11.4.1 HF7, 11.2.1 HF15, 10.2.4 HF12

Opened: Nov 15, 2014

Severity: 2-Critical

Related Article: K16409


Sometimes when encrypting certain SSL records, the Cavium Nitrox crypto accelerator can hang with the LTM log message 'request queue stuck'.


Nitrox crypto accelerator can hang.


Certain SSL records on a system with a Cavium Nitrox card.


Rebooting the unit often frees up the Cavium Nitrox crypto accelerator chip, but should be considered a temporary solution and not a permanent fix, as the issue may return.

Fix Information

The Nitrox crypto accelerator no longer hangs with certain SSL records.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips