Bug ID 573366: parking command used in the nesting script of clientside and serverside command can cause tmm core

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.0, 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,

Fixed In:

Opened: Feb 12, 2016

Severity: 3-Major


tmm cores in configuration using certain iRules


Traffic disrupted while tmm restarts.


An iRule that parks the interpreter is used in the nesting script of clientside and serverside command. (e.g. when doing a table lookup). For more information on iRule commands that park, see SOL12962: Some iRule commands temporarily suspend iRule processing, https://support.f5.com/kb/en-us/solutions/public/12000/900/sol12962.html


move the parking command outside the nesting script.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips