Bug ID 456963: TMM can restart when handling inter-TMM messages

Last Modified: Jul 18, 2026

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

Known Affected Versions:
11.5.1, 11.5.1 hf1, 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, 11.5.1 hf10, 11.5.1 hf11

Fixed In:
11.6.0, 11.5.2

Opened: Apr 13, 2014

Severity: 2-Critical

Related Article: K16391

Symptoms

TMM restarts unexpectedly.

Impact

Traffic outage or failover due to TMM restarting.

Conditions

Low memory or CMP channel congestion within TMM.

Workaround

This issue has no workaround at this time.

Fix Information

TMM now gracefully handles this rare condition.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips