Bug ID 553311: Route pool configuration may cause TMM to produce a core file

Last Modified: May 14, 2019

Bug Tracker

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

Known Affected Versions:
11.2.1, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 12.0.0

Fixed In:
12.1.0, 12.0.0 HF1, 11.5.4

Opened: Oct 19, 2015
Severity: 3-Major
Related AskF5 Article:


TMM might produce a core file and take the action defined in configuration.


Traffic disrupted while tmm restarts.


Client-side route pool configuration that configures a route pool to route back and has auto lasthop disabled.


Avoid using any route at client side (using auto lasthop or lasthop pool).

Fix Information

The tmm crash caused by the route pool configuration is fixed.

Behavior Change