Bug ID 656898: 'oops' 'bad transition' messages occur

Last Modified: Oct 17, 2023

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

Known Affected Versions:
11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 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,,,,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:

Opened: Apr 07, 2017

Severity: 2-Critical


The /var/log/ltm log shows many 'oops' 'bad transition' messages.


Connections encountering these errors are aborted.


These messages occur due to internal invariant violations on full proxy TCP virtual servers. Ramcache or SSL on these virtual servers are likely causes. There may be yet unknown causes.


The excess logging may be stopped by setting the DB variable tmm.oops to 'silent'. Although these errors are not reported, connections are still aborted.

Fix Information

The conditions under which this error occurred have been resolved.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips