Bug ID 538603: TMM core file on pool member down with rate limit configured

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.2, 11.5.3, 11.6.0, 12.0.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF1, 11.6.1, 11.5.4

Opened: Aug 07, 2015

Severity: 3-Major

Related Article: K03383492

Symptoms

TMM may produce a core file when attempting to retry to calculate the rate-limit on a pool member that has gone down.

Impact

Traffic disrupted while tmm restarts.

Conditions

This occurs when the following conditions are met: - service-down-action reselect. - rate limit specified. - traffic load balanced to pool members. - traffic is over the rate for all pool members. - all pool members go down.

Workaround

Remove rate-limit configuration.

Fix Information

TMM no longer produces a core file when attempting to retry to calculate the rate-limit on a pool member that has gone down.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips